TEA5777HN-T - ST-Ericsson - Datasheet.Directory

34.807IRELESS

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34.807IRELESS

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1. General description

The TEA5777 is a BiCMOS single-chip (32-pin or 48-pin package), electronically tuned

AM/FM stereo radio circuit, with fully integrated IF selectivity and demodulation including

local synthesized oscillator, and is intended to be used in electronically tuned radio sets.

In FM mode the radio is completely alignment free and in AM mode only a minimum of

antenna input alignment is required. The radio requires a minimum number of small and

low cost external components.

The IC communicates with a microcontroller via the I2C-bus or the 3-wire bus.

2. Features

2.1 General

nHigh integration level of the AM and FM receiver means a very limited number of

external components are required

nOn-board PLL synthesizer tuning function which includes VCOs, dividers, phase

detectors and charge pump

nFM mixer conversion for US and Europe, OIRT and Japanese band to IF

nCrystal reference frequency oscillator operating at 4 MHz

nExternal reference input frequency of 13 MHz (bus selectable)

nAutonomous search function

nIF counter with 1-bit output via the bus

nSilent readout of mono or stereo information and IF in-window indication

nLevel detector with 4-bit level information output via the bus

nI2C-bus or 3-wire bus

nStandby mode switched via the bus

n2 software programmable I/O ports with multiple functions

nSupply voltage range: 2.7 V to 7 V (typical 3 V)

nLow current consumption: 9.8 mA in AM mode and 13.9 mA in FM mode

2.2 AM

nFully integrated AM RF tuning function (no external varicap required)

nHigh-impedance MOSFET input

nFully integrated AM IF ﬁlters

nFully integrated AM VCO

nIntegrated image rejection mixer structure

nLW and MW reception possibility

TEA5777

Low-power AM/FM stereo radio for handheld applications

Rev. 01 — 11 April 2006 Product data sheet

Product data sheet Rev. 01 — 11 April 2006 2 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

2.3 FM

nHigh input sensitivity

nFully integrated FM IF selectivity

nFully integrated FM demodulator (no external discriminator)

nIntegrated image rejection mixer structure

nRF LC oscillator operating with low cost ﬁxed inductors (referenced to ground)

nFM I/Q mixer for conversion of the US, Europe, Japanese and OIRT band to IF

nFully integrated, adjustment free, stereo decoder

nSignal dependent mono or stereo blend (with on and off function)

nFM stereo readout via the bus and silent readout mode

nRDS MPX output available

nStereo decoder can be switched off via the bus

nIntegrated anti-birdy ﬁlter

3. Applications

nPortable AM/FM stereo radio

nMini and midi receiver sets

nPC radio applications

nGSM handsets

4. Quick reference data

Table 1. Quick reference data

CCA

CCD

= 3 V; T

amb

=25

C; all AC values are given in RMS.

See Figure 9 for details on the dummy inputs V

, V

and V

Symbol Parameter Conditions Min Typ Max Unit

General

VCCA analog supply voltage 2.7 3.0 7.0 V

VCCD digital supply voltage 2.7 3.0 5.0 V

ICCA analog supply current FM mode 10 13.9 17 mA

AM mode 8 9.8 11 mA

Standby mode

via bus control - 0.03 0.15 mA

ICCD digital supply current FM mode 0.5 0.8 1.5 mA

AM mode 0.5 0.8 1.5 mA

Standby mode

via bus control - 0.13 0.25 mA

Tamb ambient temperature −10 - +65 °C

Tuning

VOoutput voltage tuning voltage range

on pin CPOUT 0.2 - VCCA −

0.3 V

Product data sheet Rev. 01 — 11 April 2006 3 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] Programmable frequency range of the synthesizer referred to the antenna input.

[2] fRF = 100 MHz; ∆fFM(max) = 22.5 kHz; fmod = 1 kHz; τdeemp =50µs.

[3] The sensitivity at the dummy input is equivalent to EMF in a 75 Ω system.

Conditions: (S+N)/N = 26 dB; L = R; Baud(−3dB) = 300 Hz to 15 kHz, A-weighted; fIF = 133.333 kHz.

[4] Vi2 = 1 mV; ∆fFM(max) = 22.5 kHz.

[5] Vi2 = 1 mV; L = R; Baud(−3dB) = 300 Hz to 15 kHz, A-weighted; fIF = 133.333 kHz.

[6] Vi2 = 1 mV; ∆f = 75 kHz; with external τdeemp =50µs; Baud(−3dB) limited to 15 kHz.

[7] fRF = 918 kHz; m = 0.3; fmod = 1 kHz; τdeemp =75µs

fRF RF frequency FM [1]

fstep = 10 kHz;

fIF = 150 kHz 10.24 - 81.91 MHz

fstep = 33.333 kHz;

fIF = 133.333 kHz 34.13 - 273.03 MHz

fstep = 50 kHz;

fIF = 150 kHz 51.2 - 409.55 MHz

AM; fstep = 1 kHz;

fIF =21kHz [1]

LW 128 - 511.75 kHz

MW 512 - 2047 kHz

FM performance[2]

Viinput voltage Vi = Vi2 =

RF sensitivity at

dummy input

[3] - 2.7 3.5 µV

Vo(AF) AF output voltage measured on pins

VAFL and VAFR [4]

fIF = 133.333 kHz 70 95 120 mV

fIF = 150 kHz 55 75 95 mV

S/N signal-to-noise ratio measured on pin

MPXOUT -60-dB

THD total harmonic distortion measured on pin

MPXOUT [6] - 0.55 1.5 %

AM performance[7]

Viinput voltage Vi = Vi1 =

RF sensitivity at

dummy input

[8] - 155 - µV

E electric ﬁeld strength RF sensitivity with

ferroceptor [9] - 2.9 - mV/m

Vo(AF) AF output voltage measured on pins

VAFL and VAFR [10] 72 90 108 mV

S/N signal-to-noise ratio [11] 40 48 - dB

THD total harmonic distortion [12] - 1 2.5 %

MPX stereo decoder performance

αcs channel separation [13] 26 40 - dB

Table 1. Quick reference data

…continued

CCA

CCD

= 3 V; T

amb

=25

C; all AC values are given in RMS.

See Figure 9 for details on the dummy inputs V

, V

and V

Symbol Parameter Conditions Min Typ Max Unit

Product data sheet Rev. 01 — 11 April 2006 4 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[8] Conditions: (S+N)/N = 26 dB; m = 0.3; A-weighting ﬁlter.

[9] With ferroceptor C8E-A0424 TOKO Inc; (S+N)/N = 26 dB; A-weighting ﬁlter.

[10] Vi1 = 5 mV.

[11] Vi1 = 5 mV; A-weighting ﬁlter.

[12] Vi1 = 5 mV; m = 0.8; bit AGCRF = 0 (slow AGC RF); bit AGCIF = 0 (slow AGC IF); Baud(−3dB) limited to

15 kHz.

[13] Vi3 = 300 mV; fmod = 1 kHz; Vpilot = 30 mV; R = 1 and L = 0 or R = 0 and L = 1; VTMUTE =1 V;

fIF = 133.333 kHz; Baud(−3dB) limited to 15 kHz.

5. Ordering information

Table 2. Ordering information

Type number Package

Name Description Version

TEA5777HN HVQFN48 plastic thermal enhanced very thin quad ﬂat

package; no leads; 48 terminals;

body 7 ×7×0.85 mm

SOT619-1

TEA5777HL LQFP32 plastic low proﬁle quad ﬂat package; 32 leads;

body 7 × 7 × 1.4 mm SOT358-1

xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx

xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x

Product data sheet Rev. 01 — 11 April 2006 5 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

6. Block diagram

Pin numbers in parenthesis apply to TEA5777HL.

Fig 1. Block diagram

001aab435

AGC

RF AGC

VCO ÷2

VCOTANK1

GNDVCO_AMRF

PILDET/

AMRFAGC

AMRFIN

BUSMODE

SWPORT2/EXTIN

SWPORT1

MPXINTMUTE MPXOUT

VAFL

VAFR

XTAL2

XTAL1

4 MHz

AGC2CAP CPOUT

supply voltage

bus

control

GNDA

WRITE_READ

DATA

CLOCK

GNDIF

VCCD

VCCA

V25DIG

V25IF

VAMLNA

VREF

VCOTANK2

RFIN2

GNDRF

RFIN1

43 (28)

44 (29)

45 (30)

4 (3)

3 (2)

5 (4)

(31)

7 (5)

27 (18) 2 (1) 47

(32) 40

(26) 30

(20) 26

(17) 23

(16) 11

(8) 41

(27) 29

(19)

GNDD

(10) 20

(14) 19

(13) 18

(12)

(25)

(9)

(11)

(7)

(6)

(21)

(23)

22 (15) 36 (24) 33 (22)

FM antenna

AM antenna

AM VCO

C-BANK

÷ 8 or ÷ 32

LNA I/Q MIXER IF FILTER LPF

80 kHz

SDS

LIMITER

SLOW LEVEL

MASTER FILTER

TEA5777HN

(TEA5777HL)

ADC (4-bit)

PROGRAMMABLE

DIVIDER PHASE

DETECTOR

PILOT

DETECTOR

STEREO DECODER

REFERENCE

DIVIDER

I2C-BUS AND

3-WIRE BUS

CHARGE

PUMP

POWER SUPPLY

CRYSTAL

OSCILLATOR

MUTEMUXMATRIX

DEMODULATOR

IF COUNTER

I/Q MIXER IF FILTER IF AGC

DETECTOR

bus

bus bus

bus

bus AM/FM

selection

bus

bus bus

bus

Product data sheet Rev. 01 — 11 April 2006 6 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

7. Pinning information

7.1 Pinning

Fig 2. Pin conﬁguration HVQFN48

001aab434

TEA5777HN

n.c.

VCCD

n.c.

VREF

SWPORT2/EXTIN AGC2CAP

SWPORT1 n.c.

n.c. GNDA

AMRFIN V25DIG

n.c. VAFL

GNDVCO_AMRF n.c.

VCOTANK2 MPXIN

VCOTANK1 VAFR

CPOUT n.c.

n.c. MPXOUT

n.c.

XTAL2

GNDD

XTAL1

n.c.

CLOCK

DATA

WRITE_READ

n.c.

TMUTE

VCCA

n.c.

VAMLNA

PILDET/AMRFAGC

RFIN2

GNDRF

RFIN1

n.c.

GNDIF

V25IF

n.c.

BUSMODE

n.c.

12 25

11 26

10 27

9 28

8 29

7 30

6 31

5 32

4 33

3 34

2 35

1 36

terminal 1

index area

Transparent top view

Product data sheet Rev. 01 — 11 April 2006 7 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

7.2 Pin description

Fig 3. Pin conﬁguration LQFP32

TEA5777HL

CPOUT MPXOUT

VCOTANK1 VAFR

VCOTANK2 MPXIN

GNDVCO_AMRF VAFL

AMRFIN V25DIG

SWPORT1 GNDA

SWPORT2/EXTIN AGC2CAP

VCCD VREF

XTAL2 VAMLNA

GNDD PILDET/AMRFAGC

XTAL1 RFIN2

CLOCK GNDRF

DATA RFIN1

WRITE_READ GNDIF

TMUTE V25IF

VCCA BUSMODE

001aab432

Table 3. Pin description

Symbol Pin Description

HVQFN48 LQFP32

n.c. 1 - not connected

CPOUT 2 1 tuning current output

VCOTANK1 3 2 parallel tuned FM oscillator to ground output 1

VCOTANK2 4 3 parallel tuned FM oscillator to ground output 2

GNDVCO_AMRF 5 4 FM VCO and AM RF input ground

n.c. 6 - not connected

AMRFIN 7 5 AM RF input (FET input)

n.c. 8 - not connected

SWPORT1 9 6 programmable output and input port 1

SWPORT2/EXTIN 10 7 programmable output and input port 2 or external

reference frequency input

VCCD 11 8 digital supply voltage

n.c. 12 - not connected

n.c. 13 - not connected

XTAL2 14 9 crystal input 2

GNDD 15 10 digital ground

XTAL1 16 11 crystal input 1

n.c. 17 - not connected

Product data sheet Rev. 01 — 11 April 2006 8 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

CLOCK 18 12 I2C-bus and 3-wire bus clock input

DATA 19 13 I2C-bus and 3-wire bus data input and output

WRITE_READ 20 14 3-wire bus write and read input

n.c. 21 - not connected

TMUTE 22 15 ﬁeld strength indicator capacitor connection

VCCA 23 16 analog supply voltage

n.c. 24 - not connected

n.c. 25 - not connected

VREF 26 17 1.25 V stabilized reference voltage output

AGC2CAP 27 18 AM IF AGC capacitor connection

n.c. 28 - not connected

GNDA 29 19 analog ground

V25DIG 30 20 internal stabilized supply voltage (digital part)

output

VAFL 31 21 left channel output

n.c. 32 - not connected

MPXIN 33 22 stereo decoder input

VAFR 34 23 right channel output

n.c. 35 - not connected

MPXOUT 36 24 FM MPX output

n.c. 37 - not connected

BUSMODE 38 25 bus mode selection input

n.c. 39 - not connected

V25IF 40 26 internal stabilized supply voltage (IF, demodulator

and integrated birdy ﬁlter) output

GNDIF 41 27 ground of IF, demodulator and integrated birdy

ﬁlter

n.c. 42 - not connected

RFIN1 43 28 FM RF antenna input 1

GNDRF 44 29 FM RF ground

RFIN2 45 30 FM RF antenna input 2

PILDET/AMRFAGC 46 31 stereo decoder pilot detector ﬁlter input or AM RF

AGC capacitor connection

VAMLNA 47 32 internal stabilized supply voltage (AM front end)

output

n.c. 48 - not connected

Table 3. Pin description

…continued

Symbol Pin Description

HVQFN48 LQFP32

Product data sheet Rev. 01 — 11 April 2006 9 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

8. Functional description

The TEA5777 is an integrated AM/FM stereo radio circuit with very high integration level

including digital tuning and control functions.

The IC communicates with a microcontroller via the I2C-bus or the 3-wire bus interface

and provides the following functions:

•AM single conversion receiver with integrated image rejection for fIF =21kHz

•FM single conversion receiver with integrated image rejection for fIF = 133.333 kHz or

150 kHz (software selectable)

•FM stereo decoder with signal dependent stereo effect

The AM circuit incorporates:

•Integrated antenna tuning function

•Integrated I/Q IF channel

•On-chip image reject mixer structure

•A fully integrated AM VCO with fVCO = 8 × (fRF + fIF)

•Software selectable high-side or low-side oscillator injection

•A fully integrated AM detector

The FM circuit incorporates:

•Integrated I/Q IF channel

•On-chip image reject mixer structure

•External RF VCO running at fVCO = 2 × (fRF ± fIF)

•Software selectable high-side or low-side oscillator injection

•A fully integrated demodulator

•Japan band possibility

The stereo decoder incorporates:

•A 1.52 MHz VCO, that needs no external adjustment, which can lock to the 19 kHz

stereo pilot tone by means of a PLL system; the sub-carrier frequencies of 19 kHz,

38 kHz and others are regenerated from the VCO output

•Integrated 50 µs or 75 µs (switchable) de-emphasis

•Signal Dependent Stereo (SDS) function can be switched off via the bus interface

•Stereo decoder can be switched off in order to save power

Tuning function:

•The tuning synthesizer is on-chip with the radio and utilizes a PLL system for tuning

and an IF counter has been added for search-stop detection

•Tuning to a wanted input signal can be achieved by preset tuning or search tuning. For

the latter the IC has a built-in auto search function which reduces the load of the

microcontroller

Product data sheet Rev. 01 — 11 April 2006 10 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Bus communication:

•Bus communication takes place via the I2C-bus or the 3-wire bus protocol. Selection

of the bus mode is done by hardware programming via pin BUSMODE

•4-bit ADC level information, 1-bit IF counter and mono or stereo indication (in FM

mode) can be read via the bus. Alternatively, the mono or stereo and the IF in-window

indication can be obtained via silent readout via the bus lines CLOCK and DATA

8.1 AM radio part

8.1.1 AM RF ampliﬁer

The AM input pin AMRFIN has a (selectable) high-impedance input. The input is intended

to be connected to the top of a tuned circuit. The input impedance is determined by the

LNA gain (bit LNA) and the value of the LNA feedback resistor (bit RFB).

For large RF input signals, the RF AGC reduces the input signal level to the AM front end

in order to prevent overloading. The required AM RF AGC time constant is created by

means of an internal current source and the capacitor connected to pin

PILDET/AMRFAGC. During search operation the response time of this RF AGC circuit

can be speeded up via the bus control by bit AGCRF.

8.1.2 Tuning AM antenna circuit

The tuning capacitor for the AM antenna circuit has been integrated by means of a

capacitor bank (C-bank) and the tuning frequency can be programmed in discrete steps

via the bus. No external varactor diode is required. In order to match the capacitor bank to

the external AM antenna coil, a provision has been made to electronically align the IC to

the AM antenna. For this bit CALLIGN has to be set to logic 1 and the corresponding bits

C[6:0] have to be programmed. After this alignment bit CALLIGN should be set to logic 0

again to freeze the alignment capacitor value and to enable the control over the main

capacitor bank again.

For more details on the alignment, see Section 13.1 and the application note.

For LW mode an external capacitor needs to be added in parallel to the LW coil.

8.1.3 AM I/Q mixer

AM quadrature mixers, in an orthogonal architecture, convert AM RF signals to the

internal fIF = 21 kHz. The mixer architecture provides inherent image rejection.

8.1.4 AM VCO

The fully integrated VCO provides the local oscillator signals for the AM quadrature

mixers. No external components are required.

The internal VCO frequency ranges from 4 MHz to 14 MHz and the proper divider ratio is

chosen by selecting the MW or LW band via the bus control bit MWLW.

Programming of the VCO is done:

•For MW: fVCO = 8 × (fRF ± fIF)

•For LW: fVCO = 32 × (fRF ± fIF)

Product data sheet Rev. 01 — 11 April 2006 11 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

High-side injection or low-side injection of the VCO can be chosen:

•High-side injection: local oscillator frequency at mixer input is higher than RF input

signal frequency.

•Low-side injection: local oscillator frequency at mixer input is lower than RF input

signal frequency.

8.1.5 AM IF ﬁlter

The AM circuit incorporates an I and Q orthogonal channel path with fully integrated

polyphase IF ﬁlter. All AM IF ﬁltering is done inside the IC, therefore no external ﬁlter

components are required. The center frequency of the ﬁlter is 21 kHz and the −3dB

bandwidth amounts to 8 kHz.

8.1.6 AM IF ampliﬁcation and AM detection

The IF AGC controls the IF ampliﬁcation and a fully integrated AM detector converts the

AM IF signal into audio. In AM mode the capacitor connected to pin AGC2CAP is used for

IF AGC ﬁltering. The value of this capacitor is a compromise between AGC speed and

THD. In order to achieve an acceptable THD in normal mode and an acceptable AGC

response during e.g. a search action, the time constant can be switched to a value

15 times lower by means of bit AGCIF. In autonomous search mode (bit SEARCH = 1) the

time constant is switched automatically to the lowest value.

8.2 FM radio part

8.2.1 Low noise RF ampliﬁer

The FM circuit incorporates a wideband input. The LNA input impedance together with the

LC RF input circuit deﬁnes a low Q, FM band-pass ﬁlter. The input ﬁlter is also used for

impedance matching between the source impedance and the 300 Ω LNA input

impedance between pins RFIN1 and RFIN2. An RF AGC circuit prevents the mixer and IF

ﬁlter from overdrive conditions.

8.2.2 FM I/Q mixer

FM quadrature mixers, in an orthogonal I/Q architecture, convert FM RF signals to the

internal fIF = 133.333 kHz or 150 kHz. The mixer architecture provides inherent image

rejection. Whether fIF = 133.333 kHz or 150 kHz is chosen depends on bits FREF[1:0].

For choosing the best signal conditions with respect to the inﬂuence of the image signals,

high-side or low-side injection can be selected:

•High-side injection: local oscillator frequency at mixer input is higher than RF input

signal frequency.

•Low-side injection: local oscillator frequency at mixer input is lower than RF input

signal frequency.

Product data sheet Rev. 01 — 11 April 2006 12 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

8.2.3 FM VCO

The symmetrical LC, varactor tuned VCO provides the oscillator signals for the FM

quadrature mixers (pins VCOTANK1 and VCOTANK2). The VCO operates at double the

RF frequency fVCO =2× (fRF ± fIF) and has an internal AGC control circuit in order to

guarantee good start-up behavior and carrier-to-noise ratio (C/N) even with low Q coils

(Q > 40). High-side injection (+fIF) or low-side injection (−fIF) of the VCO can be chosen

via the bus control.

8.2.4 FM IF ﬁlter

The FM signal path incorporates an I and Q orthogonal FM channel with fully integrated

polyphase IF ﬁlter. All FM IF ﬁltering is done inside the IC, therefore no external ﬁlter

components are required. The center frequency of the ﬁlter matches the chosen IF

(fIF = 133.333 kHz or 150 kHz) and has a −3 dB bandwidth of approximately 110 kHz.

8.2.5 FM demodulator

The FM demodulator is fully integrated and needs no external components. In order to

remove undesired IF and or RF input related components, a 80 kHz low-pass ﬁlter has

been integrated.

8.3 Stereo decoder

8.3.1 MPX decoder

The PLL stereo decoder is alignment free and incorporates a fully integrated PLL loop

ﬁlter. The stereo decoder can be switched to forced mono via bus control bit FOMO.

8.3.2 Signal strength depending mono/stereo blend

When decreasing the RF input level, the MPX decoder blends from stereo to mono to limit

the output noise. The control signal is obtained from the low-pass ﬁltered level information

at pin TMUTE. This blend function, called SDS, can also be switched off via bus control bit

SDSOFF and a RF level related sudden change from stereo to mono transition will result.

8.3.3 Pilot detector

A pilot detector, with external ﬁlter capacitor at pin PILDET/AMRFAGC, is used to detect

the presence of a stereo signal. Mono or stereo reception can be read via the bus control,

but can also be passed to pin DATA in the Dbus mode (see Section 9). For this option, bit

DBUS has to be programmed. In this case, no bus action is required (silent readout) to

read the status of the pilot detector and the information is continuously available.

8.3.4 De-emphasis

In FM mode, the de-emphasis is switchable between 50 µs and 75 µs (bit DEEM). In AM

mode, bit DEEM selects a low-pass ﬁlter with the time constant 50 µsor75µs in order to

limit the noise bandwidth.

8.4 Tuning function

The tuning concept of the TEA5777 is based on a PLL and programming of the required

frequency takes place via the bus control.

Product data sheet Rev. 01 — 11 April 2006 13 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

8.4.1 Reference frequency generation

The internally required reference frequency can be obtained from the integrated crystal

oscillator or from an externally applied reference signal of 13 MHz. Selection of the

reference signal (internal or external) takes place via the bus control.

The reference frequency signals are used for:

•Reference frequency divider for the PLL synthesizer

•Center frequency adjustment of the IF ﬁlters

•Free running frequency adjustment of the stereo decoder VCO

•Clocking the stereo decoder state machine

•Timing of the IF counter

•Sampling the RF level for the level ADC

8.4.2 Crystal oscillator

The symmetrical crystal oscillator can operate with a 4 MHz clock crystal. An amplitude

control function is implemented in order to minimize the higher harmonic component

signal levels.

8.4.3 IF counter

An IF counter has been added for search-stop detection (optional, i.e. can be enabled or

disabled via bit IFCE). The IF counter result is a 1-bit output and in-window yes or no and

available via bus control. In order to minimize the interference, the IF counter can be

disabled via the bus control bit IFCE. In both AM and FM modes, two IF window settings

can be chosen by bit IFW.

When Dbus mode is activated and bit IFCE = 1, the IF counter result is available at pin

DATA (see Table 8). In this mode, the IF counter ready ﬂag (bit IFCRDY) is put on pin

DATA. Disabling bit IFCE, while Dbus mode is active, puts the mono or stereo indication

information on pin DATA. In this case no bus actions are required to read the status of the

IF counter (silent readout).

Remark: For updating the IF counter information a short pulse on pin WRITE_READ

should be generated.

8.4.4 Automatic search operation

The IC can be programmed to an autonomous search mode operation. In this mode, the

IC will search for a new station without the need of communication to the microcontroller.

To enable this mode, bit SEARCH has to be set. Under control of bit UPDWN, search stop

level bits SLEV[1:0] and search step control bits STEP[1:0], various search modes can be

selected (see Section 9).

Before this mode can be activated, ﬁrst the upper and lower band limits have to be

programmed. Bit PROGBLIM = 1 and bit UPDWN = 1 programs the upper band limit,

while bit PROGBLIM = 1 and bit UPDWN = 0 programs the lower band limit. Bit SFOUND

signals whether a new station is found. Bit BLIM signals whether a band limit is reached.

In AM mode, bit AMDELAY selects either a 40 ms or 80 ms delay time. The best value to

be selected depends on the realized AM IF AGC response (see Section 8.1.6).

Product data sheet Rev. 01 — 11 April 2006 14 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

8.5 RF level information (RSSI)

For processing Receiver Signal Strength Information (RSSI) in both AM and FM modes,

the internal level voltage is analog-to-digital converted with a 4-bit ADC. The level

information can be read by bits LEV[3:0] in the read register. In autonomous search mode,

bits LEV[3:0] still indicate some momentary level information, however the data is

dependent upon the readout timing and can be considered to have no relevance to the

user. The ADC full-scale goes from 0.25 V to 0.95 V. In AM mode, the level information

covers the ADC full-scale. In FM mode, the level information does not fully cover the ADC

full-scale.

8.6 Software programmable ports

Two software programmable ports can be addressed via the bus control. These ports can

be independently switched to multiple functions, knowing:

•Outputs: SWPORT1 and SWPORT2 can act as output ports which are capable of

sourcing and sinking approximately 9 mA.

•Inputs: SWPORT1 and SWPORT2 can act as input ports of which the status can be

read out via bus control.

Remark: Port SWPORT2 can be switched as input for the 13 MHz reference signal. In

that case, no other functions can be programmed for this port.

Product data sheet Rev. 01 — 11 April 2006 15 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9. Control functions via I2C-bus and 3-wire bus

9.1 Bus interface

Via the bus interface a couple of main blocks are controlled:

•Tuning system

•Autonomous search

•AM capacitor bank (C-bank control)

•IF counter

•4-bit level ADC

•Stereo decoder

•Mute and de-emphasis

•SWPORT1 and SWPORT2 outputs (I/O port control)

9.2 Bus protocol

The TEA5777 bus interface is a combination of an I2C-bus and a 3-wire-bus. The bus

mode is determined by the bus mode input pin BUSMODE which will be connected to

ground or to VCCD:

•Pin BUSMODE = HIGH enables the 3-wire mode

•Pin BUSMODE = LOW enables I2C-bus mode

Fig 4. Bus interface

001aab436

3-WIRE BUS OR

I2C-BUS

INTERFACE

MUTE

DE-EMPHASIS

STEREO

DECODER

AUTONOMOUS

C-BANK

CONTROL

I/O PORT

CONTROL

TUNING

SYSTEM

IF COUNTER

LEVEL ADC

BUS INTERFACE

Product data sheet Rev. 01 — 11 April 2006 16 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9.3 I2C-bus mode

The I2C-bus interface is based on

‘The I

C-bus speciﬁcation’

version 2.1 January 2000.

In the I2C-bus mode, only pins CLOCK and DATA are used for data transfer. The level on

pin WRITE_READ is don’t care.

Data transfer to the bus interface is byte oriented and no sub-addressing is used.

The data transfer consists of a START condition, device address byte plus R/W

Data is written at the rising edge and data is clocked out at the falling edge. The I2C-bus

can operate at a maximum clock frequency of 400 kHz.

The I2C-bus device address of the TEA5777 is: 110 0000 (7 bits).

9.3.1 Write mode

The bus interface has a total of 6 write registers. Before data can be written to these

registers, the I2C-bus device address byte has to be written to the IC

After the bus interface (slave) recognizes a start of transmission, the address byte is

written to the bus. If the address is equal to the internal address of the bus interface, an

acknowledge is given to the master and data can be written to the write registers.

If the bus address does not match, no acknowledge is given and the internal bus interface

clock is disabled until a next start is detected.

Table 4. I2C-bus data transfer

Condition Byte Description

START start by master

Address byte device address + R/W bit

ACK acknowledge by slave

Byte 1 data byte 1

ACK acknowledge by slave

Byte 2 data byte 2

ACK acknowledge by slave

Byte n data byte n

ACK acknowledge by slave

STOP stop by master

Product data sheet Rev. 01 — 11 April 2006 17 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9.3.2 Read mode

The bus interface has a total of 3 read bytes. If a start of transmission is detected and the

I2C-bus device address matches with the internal address, an acknowledge is given and

the data is clocked out. If not, the internal clock is disabled and the data output will be

logic 1s (FFh).

9.3.3 Dbus function in I2C-bus mode (silent readout)

The Dbus function becomes active when bit DBUS = 1 and when the maximum available

bytes are written in the write mode or when the maximum available bytes are read in the

read mode. At every start of an I2C-bus data transfer, the Dbus mode is deactivated.

When the Dbus mode is active in I2C-bus mode, pin WRITE_READ becomes an

open-collector output (pull-up resistor required). Depending on the setting of bit IFCE and

bit SEARCH, the following data will be available at pin WRITE_READ:

•Mono or stereo indication ﬂag

•IFC counter ﬂag

•SFOUND ﬂag or BLIM reached ﬂag

In Table 7 the data at pin WRITE_READ is depicted as a function of bits DBUS, SEARCH

and IFCE.

Table 5. I2C-bus write mode

Condition Byte Description

START start by master

Address byte 1100 0000 (bit R/W = 0)

ACK acknowledge by slave

Byte 1 data byte 1

ACK acknowledge by slave

Byte 2 data byte 2

ACK acknowledge by slave

Byte 6 data byte 6

ACK acknowledge by slave

STOP stop by master

Table 6. I2C-bus read mode

Condition Byte Description

START start by master

Address byte 1100 0001 (bit R/W = 1)

ACK acknowledge by slave

Byte 1 data byte 1

ACK acknowledge by slave

Byte 2 data byte 2

ACK acknowledge by slave

Byte 3 data byte 3

STOP stop by master

Product data sheet Rev. 01 — 11 April 2006 18 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] H = HIGH-level output voltage

L = LOW-level output voltage

9.4 3-wire bus mode

For the 3-wire bus mode pin BUSMODE = HIGH, i.e. connected to VCCA. The pins

CLOCK, DATA and WRITE_READ are used to communicate with the external hardware

(microcontroller or PC). The bus operates at a maximum clock of 1 MHz.

The selected mode (read or write mode) is determined by the rising or falling edge of

signal WRITE_READ.

9.4.1 Write mode

At the rising edge of signal WRITE_READ the bus interface is set to the write mode. At

every rising edge of the clock input (CLOCK) the data is clocked in. Signal DATA has to be

stable before it can be clocked in.

Table 7. Deﬁnition pin WRITE_READ functionality in I2C-bus Dbus mode

Bit Pin WRITE_READ

DBUS SEARCH IFCE Output signal Status[1]

0 X X 3-state not applicable

1 0 0 mono or stereo ﬂag H = stereo, L = mono

0 1 IFCRDY ﬂag H = IF counter ready

1 X SFOUND or BLIM ﬂag H = station found or band limit reached

Fig 5. 3-wire bus write data

001aae434

50 %

tsu(clk)

tsu(D)

valid data

tw(W)

50 % 50 %

50 %

WRITE_READ

CLOCK

DATA

th(D)

Product data sheet Rev. 01 — 11 April 2006 19 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9.4.2 Read mode

At the falling edge of signal WRITE_READ the bus interface is set to the read mode. Data

is clocked out on every falling edge of the input clock. In the read mode, pin DATA

becomes an open-collector output and an external pull-up resistor is required.

9.4.3 Dbus function in 3-wire mode (silent readout)

Bus pins CLOCK and DATA are bidirectional and act as inputs when bit DBUS = 0, but are

open-collector outputs when bit DBUS = 1. External pull-up resistors are required in this

case.

In Dbus mode, pins CLOCK and DATA are used for output data and pin WRITE_READ is

used as an input.

With a rising edge (write mode) or falling edge (read mode) of signal WRITE_READ the

Dbus mode is deactivated and a transmission is started.

The Dbus mode is activated with bit DBUS = 1 and after transfer of all 6 data bytes in the

write mode or all 3 data bytes in the read mode.

Data on pins CLOCK and DATA in the Dbus mode is given in Table 8.

[1] H = HIGH-level output voltage

L = LOW-level output voltage

Fig 6. 3-wire bus read data

001aae435

50 % 50 %

tsu(clk) tclk(H)

tclk(L) td(Q)

th(Q)

tw(R)

50 % 50 %

50 %

WRITE_READ

CLOCK

DATA

Table 8. CLOCK and DATA lines in Dbus-mode

Bit Pin CLOCK Pin DATA

DBUS SEARCH IFCE Signal Status[1] Signal Status[1]

0 X X input - input -

1 0 0 IFC ﬂag H = IF in-window mono/stereo ﬂag H = stereo, L = mono

1 IFC ﬂag H = IF in-window IFCRDY ﬂag H = IF counter ready

1 1 X SFOUND

ﬂag H = station found BLIM ﬂag H = band limit

reached

Product data sheet Rev. 01 — 11 April 2006 20 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9.5 Data transfer in I2C-bus and 3-wire mode

In the write mode, the data transfer between the TEA5777 (slave) and the microcontroller

(master) is byte oriented.

In the read mode, the data transfer from slave to master is bit oriented.

Remark: For writing to the PLL, it is necessary to write both the ﬁrst and second data

byte. Only after completing the data transfer of data byte 2 is the PLL word copied into the

PLL register.

9.5.1 Register deﬁnition in write mode

9.5.1.1 FM write mode

Table 9. Survey of bit names in FM write mode

Bits marked with * are common for FM and AM mode.

Bits 7 6 5 4 3 2 1 0

Byte 1 MUTE* AM/FM* STB* PLL12 PLL11 PLL10 PLL9 PLL8

Byte 2 PLL7 PLL6 PLL5 PLL4 PLL3 PLL2 PLL1 PLL0

Byte 3 FREF1 FREF0 IFCE* IFW* HILO* DBUS* - INTEXT*

Byte 4 P1* P0* PEN1* PEN0* - CHP0* DEEM* -

Byte 5 FOMO SDSOFF DOFF -----

Byte 6 SEARCH* PROGBLIM* UPDWN* SLEV1* SLEV0* STEP1 STEP0* -

Table 10. FM write mode - data byte 1

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) MUTE* audio mute: 0 = audio not muted; 1 = audio muted

6 AM/FM* AM/FM selection: 0 = FM; 1 = AM

5 STBY* operating mode: 0 = operating; 1 = standby

4 PLL12 setting of synthesizer programmable counter

3 PLL11

2 PLL10

1 PLL9

0 (LSB) PLL8

Table 11. FM write mode - data byte 2

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) PLL7 setting of synthesizer programmable counter

6 PLL6

5 PLL5

4 PLL4

3 PLL3

2 PLL2

1 PLL1

0 (LSB) PLL0

Product data sheet Rev. 01 — 11 April 2006 21 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 12. FM write mode - data byte 3

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) FREF1 IF and reference frequency control: see Table 13

6 FREF0

5 IFCE* IF counter: 0 = not enabled; 1 = enabled

4 IFW* IF window: 0 = 10 kHz; 1 = 20 kHz

3 HILO* VCO injection mode: 0 = low-side; 1 = high-side

2 DBUS* Dbus mode selection: 0 = off; 1 = on

1 - no function

0 (LSB) INTEXT* reference frequency source select: 0 = external; 1 = internal

Table 13. FM IF and reference frequency control

Bits FREF[1:0 fref(VCO) fref(RF) FM mode

VCO step

frequency (kHz) reference frequency

referred to RF input (kHz)

00 100 50 fIF = 150 kHz

01 20 10 fIF = 150 kHz for East Europe

10 66.666 33.333 fIF = 133.333 kHz

11 100 50 fIF = 150 kHz

Table 14. FM write mode - data byte 4

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) P1* I/O port control: see Table 28 and Table 29

6 P0*

5 PEN1*

4 PEN0*

3 - no function

2 CHP0* charge pump current: 0 = large; 1 = small

1 DEEM* de-emphasis: 0 = 50 µs; 1 = 75 µs

0 (LSB) - no function

Table 15. FM write mode - data byte 5

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) FOMO stereo reception: 0 = allow; 1 = force mono

6 SDSOFF stereo decoder blend function: 0 = on; 1 = off

5 DOFF stereo decoder: 0 = on; 1 = standby

0 (LSB) -

Product data sheet Rev. 01 — 11 April 2006 22 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9.5.1.2 AM write mode

Table 16. FM write mode - data byte 6

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) SEARCH* search mode: 0 = disabled; 1 = enabled

6 PROGBLIM* copy word: 0 = no copy; 1 = copy PLL word to BLIM register

5 UPDWN* if bit PROGBLIM = 0: 0 = down search; 1 = up search

if bit PROGBLIM = 1: 0 = lower band-limit; 1 = upper band-limit

4 SLEV1* search level settings: see Table 17

3 SLEV0*

2 STEP1 search steps FM: see Table 18

1 STEP0*

0 (LSB) - no function

Table 17. Search level settings

Bits SLEV[1:0] RF level (FM) ADC[3:0] level bits

00 5 µV 0010

01 10 µV 0100

10 30 µV 0110

11 60 µV 1001

Table 18. Search steps FM

Programmable steps FM

Bits STEP[1:0] Step size 100 kHz reference 66 kHz reference 20 kHz reference

00 1 50 33.333 10

01 2 100 66.666 20

10 3 150 100 30

11 4 200 133.333 40

Table 19. Survey of bit names in AM write mode

Bits marked with * are common for FM and AM mode.

Bits 7 6 5 4 3 2 1 0

Byte 1 MUTE* AM/FM* STB* PLL10 PLL9 PLL8 PLL7 PLL6

Byte 2 PLL5 PLL4 PLL3 PLL2 PLL1 PLL0 AGCRF AGCIF

Byte 3 MWLW LNA IFCE* IFW* HILO* DBUS* PEAK INTEXT*

Byte 4 P1* P0* PEN1* PEN0* - CHP0* DEEM* RFB

Byte 5 CALLIGN C6 C5 C4 C3 C2 C1 C0

Byte 6 SEARCH* PROGBLIM* UPDWN* SLEV1* SLEV0* AMDELAY STEP0* -

Product data sheet Rev. 01 — 11 April 2006 23 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 20. AM write mode - data byte 1

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) MUTE* audio mute: 0 = audio not muted; 1 = audio muted

6 AM/FM* AM/FM selection: 0 = FM; 1 = AM

5 STBY* operating mode: 0 = operating; 1 = standby

4 PLL10 setting of synthesizer programmable counter

3 PLL9

2 PLL8

1 PLL7

0 (LSB) PLL6

Table 21. AM write mode - data byte 2

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) PLL5 setting of synthesizer programmable counter

6 PLL4

5 PLL3

4 PLL2

3 PLL1

2 PLL0

1 AGCRF RF AGC response: 0 = slow; 1 = fast

0 (LSB) AGCIF IF AGC response: 0 = slow; 1 = fast

Table 22. AM write mode - data byte 3

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) MWLW band select: 1 = MW; 0 = LW

6 LNA LNA gain: 0 = 5 ×; 1=10×

5 IFCE* IF counter: 0 = not enabled; 1 = enabled

4 IFW* IF window: 0 = 2 kHz; 1 = 4 kHz

3 HILO* VCO injection mode: 0 = low-side; 1 = high-side

2 DBUS* Dbus mode selection: 0 = off; 1 = on

1 PEAK RFAGC speed-up: 0 = off; 1 = fast attack, normal decay

0 (LSB) INTEXT* reference frequency source select: 0 = external; 1 = internal

Table 23. AM write mode - data byte 4

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) P1* I/O port control: see Table 28 and Table 29

6 P0*

5 PEN1*

4 PEN0*

3 - no function

Product data sheet Rev. 01 — 11 April 2006 24 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] Measured with ferroceptor C8E-A0424 TOKO Inc.

2 CHP0* charge pump current: 0 = large; 1 = small

1 DEEM* de-emphasis: 0 = 50 µs; 1 = 75 µs

0 (LSB) RFB LNA feedback resistor: 0=1MΩ; 1 = 2.2 MΩ

Table 24. AM write mode - data byte 5

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) CALLIGN selection bit: 0 = C[6:0] sets C-bank; 1 = C[6:0] sets C-align

6 C6 C[6:0] sets C-bank or C-align word depending upon bit CALLIGN:

C-align: C[6:0] should be between 0 and 128 (decimal)

C-bank: C[6:0] should be between 0 and 122 (decimal)

5C5

4C4

3C3

2C2

1C1

0 (LSB) C0

Table 25. AM write mode - data byte 6

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) SEARCH* search mode: 0 = disabled; 1 = enabled

6 PROGBLIM* copy word: 0 = no copy; 1 = copy PLL word to BLIM register

5 UPDWN* if bit PROGBLIM = 0: 0 = down search; 1 = up search

if bit PROGBLIM = 1: 0 = lower band limit; 1 = upper band limit

4 SLEV1* search level settings: see Table 26

3 SLEV0*

2 AMDELAY IF counter delay; 0 = 40 ms; 1 = 80 ms

1 STEP0* search steps AM: see Table 27

0 (LSB) - no function

Table 26. Search level settings

Bits SLEV[1:0] RF level (AM)[1] ADC[3:0] level bits

00 0.9 mV/m 0010

01 1.2 mV/m 0100

10 1.9 mV/m 0110

11 3.8 mV/m 1001

Table 23. AM write mode - data byte 4

…continued

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

Product data sheet Rev. 01 — 11 April 2006 25 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] X = don’t care.

9.5.2 Register deﬁnition in read mode

9.5.2.1 FM read mode

Table 27. Search steps AM

Programmable steps AM fref = 8 kHz

Bit STEP0 Step size PLL step C-bank step

MW LW MW LW MW LW

0 9 36 9 kHz 9 kHz 9 kHz mode 9 kHz mode

1 10 40 10 kHz 10 kHz 10 kHz mode 10 kHz mode

Table 28. I/O port control SWPORT1

Bit PEN0 Bit P0 PORT P0 (pin SWPORT1)

[1] input

1 0 output logic 0

1 output logic 1

Table 29. I/O port control SWPORT2

Bit INTEXT Bit PEN1 Bit P1 PORT P1 (SWPORT2)

10X

[1] input (internal reference)

1 1 0 output logic 0 (internal reference)

1 output logic 1 (internal reference)

[1] 1 reference input (13 MHz)

Table 30. Survey of bit names in FM read mode

Bits marked with * are common for FM and AM mode.

Bits 7 6 5 4 3 2 1 0

Byte 1 IFCRDY* IFCE* MOST LEV3* LEV2* LEV1* LEV0* SFOUND*

Byte 2 BLIM* P1* P0* PLL12 PLL11 PLL10 PLL9 PLL8

Byte 3 PLL7 PLL6 PLL5 PLL4 PLL3 PLL2 PLL1 PLL0

Table 31. FM read mode - data byte 1

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) IFCRDY* IF counter ready

6 IFCE* IF counter enable

5 MOST mono or stereo setting

4 LEV3* search level setting

3 LEV2*

2 LEV1*

1 LEV0*

0 (LSB) SFOUND* station found

Product data sheet Rev. 01 — 11 April 2006 26 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

9.5.2.2 AM read mode

Table 32. FM read mode - data byte 2

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) BLIM* band limit reached

6 P1* port 1 setting

5 P0* port 0 setting

4 PLL12 setting of synthesizer

3 PLL11

2 PLL10

1 PLL9

0 (LSB) PLL8

Table 33. FM read mode - data byte 3

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) PLL7 setting of synthesizer

6 PLL6

5 PLL5

4 PLL4

3 PLL3

2 PLL2

1 PLL1

0 (LSB) PLL0

Table 34. Survey of bit names in AM read mode

Bits marked with * are common for FM and AM mode.

Bits 7 6 5 4 3 2 1 0

Byte 1 IFCRDY* IFCE* - LEV3* LEV2* LEV1* LEV0* SFOUND*

Byte 2 BLIM* P1* P0* PLL10 PLL9 PLL8 PLL7 PLL6

Byte 3 PLL5 PLL4 PLL3 PLL2 PLL1 PLL0 - -

Table 35. AM read mode - data byte 1

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) IFCRDY* IF counter ready

6 IFCE* IF counter enable

5 - no function

4 LEV3* search level setting

3 LEV2*

2 LEV1*

1 LEV0*

0 (LSB) SFOUND* station found

Product data sheet Rev. 01 — 11 April 2006 27 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 36. AM read mode - data byte 2

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) BLIM* band limit reached

6 P1* port 1 setting

5 P0* port 0 setting

4 PLL10 setting of synthesizer

3 PLL9

2 PLL8

1 PLL7

0 (LSB) PLL6

Table 37. AM read mode - data byte 3

Bits marked with * are common for FM and AM mode.

Bit Symbol Description

7 (MSB) PLL5 setting of synthesizer

6 PLL4

5 PLL3

4 PLL2

3 PLL1

2 PLL0

1 - no function

0 (LSB) - no function

Product data sheet Rev. 01 — 11 April 2006 28 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

10. Limiting values

[1] Machine model: R = 10 Ω, L = 0.75 µH, C = 200 pF.

[2] Human body model: R = 1.5 kΩ, C = 100 pF.

11. Thermal characteristics

Table 38. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter Conditions Min Max Unit

VCCA analog supply voltage −0.3 +8 V

VCCD digital supply voltage −0.3 +5 V

Vxvoltage on pin x

VCOTANK1 and VCOTANK2 −0.3 +8 V

Tstg storage temperature −55 +150 °C

Tamb ambient temperature −10 +65 °C

Vesd electrostatic discharge voltage

on pins SWPORT1 and SWPORT2 MM [1] -±100 V

HBM [2] -±1000 V

on pin AMRFIN MM [1] -±200 V

HBM [2] -±1500 V

on all other pins MM [1] -±200 V

HBM [2] -±2000 V

Table 39. Thermal characteristics

Symbol Parameter Conditions Typ Unit

Rth(j-a) thermal resistance from junction to ambient in free air

HVQFN48 package 29 K/W

LQFP32 package 80 K/W

Product data sheet Rev. 01 — 11 April 2006 29 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

12. Characteristics

[1] These minimum and maximum values are typical values.

Table 40. Static characteristics

CCA

CCD

= 3 V; T

amb

=25

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Supplies

VCCA analog supply voltage 2.7 3.0 7.0 V

VCCD digital supply voltage 2.7 3.0 5.0 V

ICCA analog supply current FM mode 10 13.9 17 mA

AM mode 8 9.8 11 mA

Standby mode via bus control - 0.03 0.15 mA

ICCD digital supply current FM mode 0.5 0.8 1.5 mA

AM mode 0.5 0.8 1.5 mA

Standby mode via bus control - 0.13 0.25 mA

DC operating voltages

VOoutput voltage unloaded

on pin CPOUT tuning voltage range 0.2 - VCCA − 0.3 V

on pins XTAL1 and XTAL2 - 1.6 - V

on pin TMUTE FM [1] 0.2 - 0.8 V

AM 0.1 - 1.2 V

on pin VREF - 1.25 - V

on pin AGC2CAP FM - - - V

AM - 1.25 - V

on pin V25DIG - 2.5 - V

on pins VAFL and VAFR FM 0.675 0.750 0.825 V

AM 0.55 0.65 0.75 V

on pin MPXOUT FM 1 1.25 1.5 V

AM - 0 - V

on pin V25IF - 2.5 - V

on pin PILDET/AMRFAGC FM - 0.75 - V

AM 0 - 2.5 V

on pin VAMLNA FM - - - V

AM - 2.3 - V

VIinput voltage unloaded

on pin MPXIN FM 0.7 0.75 0.8 V

AM - 0 - V

on pins RFIN1 and RFIN2 FM 0 1.75 - V

AM - 0 - V

Product data sheet Rev. 01 — 11 April 2006 30 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 41. Digital input and output characteristics

CCA

CCD

= 3 V; T

amb

=25

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Software programmable ports: pins SWPORT1 and SWPORT2

VOH HIGH-level output voltage IO= 0 A - 2.4 - V

VOL LOW-level output voltage IO=1mA

on pin SWPORT1 - 109.7 - mV

on pin SWPORT2 - 105.5 - mV

Io(source) output source current VO=0 V −6−9−14 mA

Io(sink) output sink current VO=3 V 6 9 14 mA

VO= 0.8 V; Rpu =1kΩ

on pin SWPORT1 - 7.85 - mA

on pin SWPORT2 - 8.04 - mA

Digital inputs

VIH HIGH-level input voltage 0.45VCCD -- V

VIL LOW-level input voltage - - 0.2VCCD V

Digital outputs: pins CLOCK, DATA and WRITE_READ

VOL LOW-level output voltage IOL = 500 µA; open-collector - - 450 mV

IOL LOW-level output current open-collector 500 - - µA

Table 42. Bus timing characteristics

CCA

CCD

= 3 V; T

amb

=25

C; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Timing I2C-bus

fSCL SCL clock frequency - - 400 kHz

tHIGH HIGH period of the SCL clock 1 - - µs

tLOW LOW period of the SCL clock 1 - - µs

Timing 3-wire bus; see Figure 7 and Figure 8

fi(clk) clock input frequency - - 1 MHz

tclk(H) clock HIGH time 300 - - ns

tclk(L) clock LOW time 300 - - ns

Write mode

tw(W) write enable pulse width 1 - - µs

tsu(clk) clock setup time 300 - - ns

tsu(D) data input set-up time in write mode 100 - - ns

th(D) data input hold time in write mode 100 - - ns

Read mode

tw(R) read enable pulse width 1 - - µs

tsu(clk) clock setup time 300 - - ns

th(Q) data output hold time in read mode 10 - - ns

td(Q) data output delay time in read mode - - 100 ns

Product data sheet Rev. 01 — 11 April 2006 31 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Fig 7. 3-wire bus write data

Fig 8. 3-wire bus read data

001aae434

50 %

tsu(clk)

tsu(D)

valid data

tw(W)

50 % 50 %

50 %

WRITE_READ

CLOCK

DATA

th(D)

001aae435

50 % 50 %

tsu(clk) tclk(H)

tclk(L) td(Q)

th(Q)

tw(R)

50 % 50 %

50 %

WRITE_READ

CLOCK

DATA

Table 43. Dynamic characteristics

CCA

CCD

= 3 V; T

amb

=25

C; all values are given in RMS; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

FM voltage controlled oscillator: pins VCOTANK1 and VCOTANK2

fosc oscillator frequency VCPOUT = 0.2 V to (VCCA −0.3 V) 130 - 217 MHz

Vooutput voltage measured between pins VCOTANK1 and

VCOTANK2; fosc = 200 MHz; Q = 40;

L = 33 nH

- 500 - mV

ICCA(VCO) VCO analog supply current 0.5 1 3 mA

Crystal oscillator: pins XTAL1 and XTAL2

fxtal crystal frequency internal reference source selected - 4 - MHz

∆fxtal crystal frequency accuracy fxtal = 4 MHz - 20 50 ppm

Vo(xtal)(p-p) peak-to-peakcrystaloscillator

output voltage measured between pins XTAL1 and XTAL2 - 280 - mV

VO(bias) bias output voltage - 1.6 - V

Riinput resistance measured between pins XTAL1 and XTAL2 150 - - Ω

Product data sheet Rev. 01 — 11 April 2006 32 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Ciinput capacitance measured between pins XTAL1 and XTAL2 - 16 - pF

External reference frequency input: pin SWPORT2/EXTIN

fiinput frequency FM - 13 - MHz

AM - 13 - MHz

Viinput voltage external applied [1] 150 - 1800 mV

VIinput voltage no external input signal applied - 0.9 - V

Ziinput impedance at indicated input frequency - 100 - kΩ

Synthesizer

tsrch search time synthesizer search time for empty band

FM band from 87.5 MHz to 108 MHz;

step = 100 kHz - 2.3 - s

AM band from 522 kHz to 1620 kHz;

AM delay = 40 ms -10- s

tacq acquisition time synthesizerpreset acquisition time between

two band limits

FM - 10 - ms

AM: MW - 10 - ms

AM: LW - 10 - ms

fRF RF frequency FM [2]

fstep = 10 kHz; fIF = 150 kHz 10.24 - 81.91 MHz

fstep = 33.333 kHz; fIF = 133.333 kHz 34.13 - 273.03 MHz

fstep = 50 kHz; fIF = 150 kHz 51.2 - 409.55 MHz

AM; fstep = 1 kHz; fIF =21kHz [2]

LW 128 - 511.75 kHz

MW 512 - 2047 kHz

Synthesizer programmable divider

D/Dprog programmable divider ratio FM 1024 8191

AM 512 2047

Dprog(step) programmable divider step - 1 -

NVCO(AM) AM VCO divider AM MW - 8 -

AM LW - 32 -

Synthesizer reference divider

D/Dref(xtal) crystal reference divider ratio internal reference frequency; fxtal = 4 MHz

fref(RF) = 10 kHz; fIF = 150 kHz - 200 -

fref(RF) = 33.333 kHz; fIF = 133.333 kHz - 60 -

fref(RF) = 50 kHz; fIF = 150 kHz - 40 -

fref(RF) = 1 kHz; fIF = 21 kHz - 500 -

Table 43. Dynamic characteristics

…continued

CCA

CCD

= 3 V; T

amb

=25

C; all values are given in RMS; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Product data sheet Rev. 01 — 11 April 2006 33 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] Works with digital input signal from 0 V to 1.4 V.

[2] Programmable frequency range of the synthesizer referred to the antenna input.

D/Dref(ext) external reference divider

ratio external reference frequency; fi=13MHz

fref(RF) = 10 kHz - 650 -

fref(RF) = 33.333 kHz - 195 -

fref(RF) = 50 kHz - 130 -

fref(RF) = 1 kHz - 1625 -

Charge pump: pin CPOUT

Io(sink) output sink current high current range 300 350 410 µA

low current range 200 250 300 µA

Io(source)(M) peak source output current high current range −200 −250 −300 µA

low current range −140 −170 −200 µA

IF counter

NIFc IF counter length - 13 - bit

NIFc(result) IF counter result in-window or out-window - 1 - bit

Vsens sensitivity voltage FM - 5 - µV

AM --- µV

fIF(window) IF window width frequency FM

bit IFW = 0 −10 +10 kHz

bit IFW = 1 −20 +20 kHz

bit IFW = 0 −2 +2 kHz

bit IFW = 1 −4 +4 kHz

tIFc IF counter time period measuring time

FM - 20 - ms

AM - 5 - ms

td(IFc) IF counter delay time FM - 5 - ms

bit AMDELAY = 0 - 40 - ms

bit AMDELAY = 1 - 80 - ms

Table 43. Dynamic characteristics

…continued

CCA

CCD

= 3 V; T

amb

=25

C; all values are given in RMS; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Product data sheet Rev. 01 — 11 April 2006 34 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 44. FM performance

CCA

CCD

= 3 V; T

amb

=25

C; f

= 100 MHz; f

mod

= 1 kHz;

∆

f = 22.5 kHz;

deemp

=50

s; all AC values are given in

RMS; see test circuit of Figure 9; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Inputs

Input: pins RFIN1 and RFIN2

Riinput resistance measured between pins RFIN1 and

RFIN2 - 300 - Ω

Ciinput capacitance - 4 - pF

FM dummy

Viinput voltage Vi = Vi2 = sensitivity at dummy input;

(S+N)/N = 26 dB; L = R;

Baud(−3dB) = 300 Hz to 15 kHz

A-weighted; fIF = 133.333 kHz

[1] - 2.7 3.5 µV

large signal voltage handling capacity;

THD < 10 % -1000-mV

FM channel

∆fAF(M) peak AF frequency deviation Vi2 =1mV; f

mod = 1 kHz, L = R;

fIF = 133.333 kHz

THD < 1 % 75 102.7 - kHz

THD < 1.5 % 75 110.1 - kHz

IP3ib in-band third-order intercept

point ∆f1= 200 kHz; ∆f2= 400 kHz;

fRF =98MHz [2] -97-dBµV

IP3ob out-band third-order intercept

point ∆f1= 5 MHz; ∆f2= 10 MHz;

fRF = 88 MHz or 103 MHz [2] -96-dBµV

S+300 high-side 300 kHz selectivity 40 - - dB

S−300 low-side 300 kHz selectivity 35 - - dB

αimage image rejection fRF = 87.5 MHz to 108 MHz 25 41 - dB

Baud(−3dB) −3 dB audio bandwidth Vi2 = 1 mV; ∆fFM(max) = 22.5 kHz

low-end [3] - - 50 Hz

high-end 12500 - - Hz

PSRR power supply rejection ratio ∆VCCA = 147 mV (RMS); fripple = 1 kHz - 42 - dB

αAM AM suppression 100 µV < Vi2 < 10 mV; m = 0.3;

fmod = 1 kHz -50-dB

I and Q channel IF ﬁlter

fIF IF frequency fstep = 33.333 kHz - 133.333 - kHz

fstep = 10 kHz or 50 kHz - 150 - kHz

∆fc(IF) IF center frequency deviation all combinations - - 5.5 kHz

BIF IF ﬁlter bandwidth fIF = 133.333 kHz 108 110 112 kHz

fIF = 150 kHz 123 125 127 kHz

Outputs

MPX output: pin MPXOUT

Vooutput voltage Vi2 =1mV

fIF = 133.333 kHz 75 104 125 mV

fIF = 150 kHz 60 82 100 mV

Io(AC)M peak AC output current - 100 - µA

Product data sheet Rev. 01 — 11 April 2006 35 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] The sensitivity at the dummy input is equivalent to EMF in a 75 Ω system.

[2] Related to LNA input.

[3] With a pre-emphasis of 50 µs.

VOoutput voltage properly tuned 1 1.25 1.5 V

THD total harmonic distortion Vi2 = 1 mV; ∆f = 75 kHz; with external

τdeemp =50µs; Baud(−3dB) limited to

15 kHz

- 0.55 1.5 %

S/N signal-to-noise ratio Vi2 =1mV; L=R;

Baud(−3dB) = 300 Hz to 15 kHz

A-weighted; fIF = 133.333 kHz

-60-dB

Zooutput impedance 300 420 550 Ω

CLload capacitance - - 40 pF

RLload resistance 33 - - kΩ

AF output: pins VAFL and VAFR

Vo(AF) AF output voltage Vi2 = 1 mV, ∆fFM(max) = 22.5 kHz

fIF = 133.333 kHz 70 95 120 mV

fIF = 150 kHz 55 75 95 mV

FM IF level detector

Input FM dummy

Viinput voltage Vi = Vi2 = detector level voltage

start ADC - 5 - µV

step size of ADC - 4.7 - dB

Level output: pin TMUTE

VOoutput voltage Vi2 = 0 V - 0.2 - V

Vi2 = 5 mV - 0.8 - V

Vo(slope) output voltage slope 10 mV < Vi2 < 1 mV - 214 - mV/

20dB

Rooutput resistance 200 250 350 kΩ

Table 44. FM performance

…continued

CCA

CCD

= 3 V; T

amb

=25

C; f

= 100 MHz; f

mod

= 1 kHz;

∆

f = 22.5 kHz;

deemp

=50

s; all AC values are given in

RMS; see test circuit of Figure 9; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Product data sheet Rev. 01 — 11 April 2006 36 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 45. AM performance

CCA

CCD

= 3 V; T

amb

=25

C; f

= 918 kHz; f

mod

= 1 kHz; m = 0.3;

deemp

=75

s; V

measured at input of matching

network; all AC values are given in RMS; see test circuit of Figure 9; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Inputs

AM RF input: pin AMRFIN

VIinput voltage - 0 - V

IIinput current VPILDET/AMRFAGC =0 V - 0 - µA

Viinput voltage RF sensitivity at dummy input;

Vi=V

i1; (S+N)/N = 26 dB;

A-weighting ﬁlter

- 155 - µV

large signal voltage handling

capability; THD < 10 % - 300 - mV

E electric ﬁeld strength RF sensitivity with ferroceptor;

(S+N)/N = 26 dB; A-weighting ﬁlter [1] - 2.9 - mV/m

AM channel

Overall data

Baud(−3dB) −3 dB audio bandwidth Vi1 = 5 mV

low-end - - 50 Hz

high-end 1.5 2.1 - kHz

S/N signal-to-noise ratio Vi1 = 5 mV; A-weighting ﬁlter 40 48 - dB

THD total harmonic distortion Vi1 = 5 mV; m = 0.8;

bit AGCRF = 0 (slow);

bit AGCIF = 0 (slow);

Baud(−3dB) limited to 15 kHz

- 1 2.5 %

PSRR power supply rejection ratio ∆VCCA = 147 mV (RMS);

fripple = 1 kHz -34-dB

S+9 high-side 9 kHz selectivity measured at dummy input Vi1 25 32 - dB

S−9low-side 9 kHz selectivity measured at dummy input Vi1 25 30 - dB

S+27 high-side 27 kHz selectivity measured at dummy input Vi1 45 58 - dB

S−27 low-side 27 kHz selectivity measured at dummy input Vi1 45 58 - dB

S+100 high-side 100 kHz selectivity measured at dummy input Vi1 45 59 - dB

S−100 low-side 100 kHz selectivity measured at dummy input Vi1 45 59 - dB

αimage image rejection 520 kHz ≤ fRF ≤ 1720 kHz [2] 40--dB

Capacitance bank

Ciinput capacitance bit CALLIGN = 0

minimum C[6:0] = 000 0000 - 20.5 - pF

maximum C[6:0] = 111 1010 390 453 544 pF

Nstep(bank) number of bank steps - 122 -

Calign alignment capacitance bit CALLIGN = 1

C[6:0] = 000 0000 - 0 - pF

C[6:0] = 111 1111 - 17 - pF

Calign(step) alignment capacitance step - 0.134 - pF

Nstep(align) number of alignment steps - 128 -

Product data sheet Rev. 01 — 11 April 2006 37 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] With ferroceptor C8E-A0424 TOKO Inc.

[2] Without antenna input contribution.

LNA

GLNA LNA gain bit LNA = 0 (5 ×) - 14 - dB

bit LNA = 1 (10 ×) - 20 - dB

αAGC(RF) RF AGC attenuation VPILDET/AMRFAGC =0V - 0 - dB

VPILDET/AMRFAGC = 2 V - 25 - dB

Riinput resistance bit LNA = 0 (5 ×)

RFB = 0 (low feed-back) - 166 - kΩ

RFB = 1 (high feed-back) - 366 - kΩ

bit LNA = 1 (10 ×)

RFB = 0 (low feed-back) - 91 - kΩ

RFB = 1 (high feed-back) - 200 - kΩ

I and Q channel IF ﬁlter

fIF IF frequency - 21 - kHz

∆fIF IF frequency deviation - - 0.2 kHz

BIF IF ﬁlter bandwidth - 8 - kHz

Outputs

AF output: pins VAFL and VAFR

Vo(AF) AF output voltage Vi1 = 5 mV 72 90 108 mV

VOoutput voltage properly tuned 0.55 0.65 0.75 V

Zooutput impedance 300 500 800 Ω

AM IF level detector

Input AM dummy

Viinput voltage Vi = Vi2 = detector level voltage;

LNA = 1 and RFB = 0

start ADC - 50 - µV

end ADC - 2 - mV

Level output: pin TMUTE

VOoutput voltage Vi1 = 0 V 0.1 0.15 0.3 V

Vi1 = 10 mV 0.8 1 1.2 V

Vo(slope) output voltage slope 100 µV< Vi1 < 1 mV - 375 - mV/

20dB

Zooutput impedance 260 360 480 kΩ

Table 45. AM performance

…continued

CCA

CCD

= 3 V; T

amb

=25

C; f

= 918 kHz; f

mod

= 1 kHz; m = 0.3;

deemp

=75

s; V

measured at input of matching

network; all AC values are given in RMS; see test circuit of Figure 9; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Product data sheet Rev. 01 — 11 April 2006 38 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 46. Stereo decoder characteristics

CCA

CCD

= 3 V; T

amb

=25

deemp

=50

s; not forced to mono; all AC values are given in RMS; see test circuit of

Figure 9; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Input: pin MPXIN

VIinput voltage 0.7 0.75 0.8 V

Riinput resistance 300 400 500 kΩ

MPX stereo decoder channel

Overall data

Gvvoltage gain fmod = 1 kHz [1] −1.1 −0.82 −0.4 dB

αcs channel separation Vi3 = 300 mV; fmod = 1 kHz;

Vpilot = 30 mV; R = 1 and L = 0 or

R = 0 and L = 1; VTMUTE =1 V;

fIF = 133.333 kHz; Baud(−3dB)

limited to 15 kHz

26 40 - dB

(S+N)/N signal plus noise-to-noise ratio measured at AF output; L = R;

Vi3 = 300 mV; fmod = 1 kHz;

Vpilot = 30 mV; A-weighted

- 68.5 - dB

THD total harmonic distortion measured at AF output; L = R;

VMPXOUT = 300 mV; fmod = 1 kHz;

Vpilot = 30 mV; Baud(−3dB) limited to

15 kHz

- 0.05 0.5 %

α19 19 kHz suppression reference 300 mV=0dB 23 28 - dB

α38 38 kHz suppression reference 300 mV=0dB 31 52 - dB

Pilot detector

Vpilot pilot voltage VTMUTE =1 V

switching to stereo - 13 16 mV

switching back to mono 3 6 - mV

mono hysteresis 678mV

Integrated de-emphasis

τdeemp de-emphasis time constant bit DEEM = 0 - 50 - µs

bit DEEM = 1 - 75 - µs

Hard mute

αmute mute attenuation measured on pins VAFL and

VAFR; audio muted with bit

MUTE = 1; A-weighted

60 70 - dB

SDS curve (blend function)

Viinput voltage SDS region voltage Vi = Vi1;

Vi3 = 300 mV; fmod = 1 kHz;

Vpilot =30mV; R=1andL=0 or

R = 0 and L = 1; bit SDSOFF = 0;

bit DOFF = 0; bit FOMO = 0

start level - 15 - µV

stop level - 150 - µV

Product data sheet Rev. 01 — 11 April 2006 39 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

[1] This includes the attenuation due to the de-emphasis. At 1 kHz this is approximately 0.4 dB for 50 µs.

AF output: pins VAFL and VAFR

Vo(AF) AF output voltage measured with respect to input pin

MPXIN; Vi3 = 100 mV; L = R;

fmod = 1 kHz

83 91 99 mV

Io(sink)M peak sink output current Vi3 = 100 mV; L = R; fmod = 1 kHz - 60 - µA

VOoutput voltage measured with respect to input pin

MPXIN; FM mode 0.675 0.75 0.825 V

Rooutput resistance 300 500 800 Ω

Table 46. Stereo decoder characteristics

…continued

CCA

CCD

= 3 V; T

amb

=25

deemp

=50

s; not forced to mono; all AC values are given in RMS; see test circuit of

Figure 9; unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

Product data sheet Rev. 01 — 11 April 2006 40 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

13. Application information

13.1 AM coil requirements and alignment

The AM receiver is a magnetic ﬁeld receiver. It can be used with a ferroceptor or an

antenna. In both cases, the antenna can be seen as an inductor that should be in

resonance with the on-chip C-bank at the frequency of interest. The C-bank values are

such that a nominal device and nominal antenna inductor value result in the correct tuning

grid depending upon bit STEP0; see Table 16 and Table 27.This puts requirements on the

nominal value and tuning range of the AM antenna. Due to spread an alignment is

needed.

13.1.1 AM coil requirements

In order to align the antenna C-bank the antenna coil must meet the requirements of

Table 47.

[1] Optimal means that the LC product (L of AM coil and C of C-bank) has zero TC1, since

TC1(C-bank) = +50 ppm/K. Having TC1(L of AM coil) equal to −50 ppm/K is not a hard requirement.

However, it is advisable to keep the TC1(LC product) < 350 ppm/K.

13.1.2 AM coil alignment

Alignment is setting the right C-align value and tuning the AM coil. This is done as follows:

1. Set C-align = 0

2. Measure the resonance frequency 1 (frsn1) with C-bank = 0

3. Measure the resonance frequency 2 (frsn2) with C-bank = 122

4. Set C-bank = 0:

–Tune C-align until the resonance frequency 3 becomes frsn3

–Tune AM coil until the resonance frequency 4 becomes frsn4

The frsn3 and frsn4 values can be calculated based upon frsn1 and frsn2.

This procedure only has to be done once in order to ﬁt the AM coil and device together.

The C-align data has to be stored in the microcontroller and should be written every time

the device is powered up.

For C-align the internal digital controlled capacitor is used in principle. It is also possible to

use an external trim capacitor (0 pF to 17 pF) instead. This has the advantage that no

alignment data has to be stored in the microcontroller at the cost of one trim capacitor.

Table 47. AM coil requirements

Parameter Value

Nominal value 203 µH

Tuning range needed for alignment

(excluding own tolerance) ± 16 %

Optimal TC1[1] −50 ppm/K

xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx

xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x

Product data sheet Rev. 01 — 11 April 2006 41 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

14. Test information

Fig 9. Test circuit

001aab437

TEA5777HL

BUSMODE

MPXOUT

VAFR

MPXIN

VAFL

V25DIG

GNDA

AGC2CAP

VREF

CPOUT

VCOTANK1

VCOTANK2

GNDVCO_AMRF

AMRFIN

SWPORT1

VCCD

SWPORT2/EXTIN

V25IF

GNDIF

RFIN1

GNDRF

RFIN2

PILDET/AMRFAGC

VAMLNA

VCCA

TMUTE

WRITE_READ

DATA

CLOCK

XTAL1

GNDD

XTAL2

R10

C21

40 MHz

write/read

bus

control

data

clock

VCC

C14

C15

L1 L2

D9D8

C12

C11

C10 C20 C7 C1

R14

C19

50 Ω

AM dummy

Vi1

Vi(ext)

Vi2

Vi3

VCC

R15

C17

L3 C16

C18

L4R13

R1250 Ω

FM dummy

R11

audio

2345678

24 23 22 21 20 19 18 17

Product data sheet Rev. 01 — 11 April 2006 42 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Table 48. Test circuit components

Part

number Speciﬁcation Remark

Value Tolerance Type

C1 100 nF 20 % C0603

C5 3.3 µF 20 % 6V3 B45196E1335M10*, EPCOS

C6 100 nF 20 % C0603

C7 2.2 µF 20 % 6V3 B45196E1225M10*, EPCOS

C10 220 nF 20 % C0805

C11 15 nF 20 % C0603

C12 220 nF 20 % C0805

C14 1 µF 20 % C1206 low leakage (< 5 nA), X7R

C15 3.3 µF 20 % 6V3 B45196E1335M10*, EPCOS

C16 33 pF 5 % C0603 NP0

C17 39 pF 5 % C0603 NP0

C18 12 pF 5 % C0603 NP0

C19 2.2 µF 20 % 6V3 B45196E1225M10*, EPCOS

C20 220 nF 20 % C0603 NP0

C21 1 µF 20 % 16 V B45196E3105M10*, EPCOS

D8 BB202

D9 BB202

L1 33 nH 5 % Q = 40 TOKO, LLQ1608-A33N_J

L2 33 nH 5 % Q = 40 TOKO, LLQ1608-A33N_J

L3 120 nH 5 % TOKO, LLQ1608-AR120N_J

L4 220 nH 5 % TOKO, LLQ1608-AR220N_J

L6 200 nH Q > 120 tuning range larger than −16 % to +16 %;

Sagami 940927266B (part of the AM dummy)

R4 2.2 kΩ20 % R0603

R8 100 W 20 % R0603

R10 47 W 20 % R0603

R11 10 W 5 % R0603 (part of the FM dummy, i.e. 50 Ω to 75 Ω)

R12 60 W 5 % R0603 (part of the FM dummy, i.e. 50 Ω to 75 Ω)

R13 45 W 5 % R0603 (part of the FM dummy, i.e. 50 Ω to 75 Ω)

R14 51 W 5 % R0603 (part of the AM dummy)

R15 1 W 5 % R0603 (part of the AM dummy)

X1 4 MHz HC49 NDK

Product data sheet Rev. 01 — 11 April 2006 43 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

15. Package outline

Fig 10. Package outline SOT619-1 (HVQFN48)

0.51

A1Eh

UNIT ye

0.2

REFERENCES

OUTLINE

VERSION EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 7.1

6.9

5.25

4.95

7.1

6.9 5.25

4.95

5.5

0.30

0.18

0.05

0.00 0.05 0.1

DIMENSIONS (mm are the original dimensions)

SOT619-1 MO-220 - - -- - -

0.5

0.3

0.1

0.05

0 2.5 5 mm

scale

SOT619-1

HVQFN48: plastic thermal enhanced very thin quad flat package; no leads;

48 terminals; body 7 x 7 x 0.85 mm

A(1)

max.

AA1c

detail X

y1C

13 24

48 37

01-08-08

02-10-18

terminal 1

index area

terminal 1

index area

1/2 e

1/2 e AC

E(1)

Note

1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.

D(1)

Product data sheet Rev. 01 — 11 April 2006 44 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

Fig 11. Package outline SOT358-1 (LQFP32)

UNIT A

max. A1A2A3bpcE

(1) eH

ELL

pZywv θ

REFERENCES

OUTLINE

VERSION EUROPEAN

PROJECTION ISSUE DATE

IEC JEDEC JEITA

mm 1.6 0.20

0.05 1.45

1.35 0.25 0.4

0.3 0.18

0.12 7.1

6.9 0.8 9.15

8.85 0.9

0.5 7

0.25 0.11 0.2

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

0.75

0.45

SOT358 -1 136E03 MS-026 03-02-25

05-11-09

D(1) (1)(1)

7.1

6.9

9.15

8.85

0.9

0.5

EA1

detail X

(A )

HA2

vMB

vMA

24 17

pin 1 index

0 2.5 5 mm

scale

LQFP32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm SOT358-1

Product data sheet Rev. 01 — 11 April 2006 45 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

16. Abbreviations

17. Revision history

Table 49. Abbreviations

Acronym Description

ADC Analog-to-Digital Converter

AGC Automatic Gain Control

BiCMOS Bi-polar Complementary Metal-Oxide Semiconductor

FET Field-Effect Transistor

GSM Global System for Mobile communication

HBM Human Body Model

I/Q In-phase/Quadrature-phase

LNA Low Noise Ampliﬁer

LW Long Wave

MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor

MPX Multiplex

MM Machine Model

MW Medium Wave

OIRT Organisation Internationale de Radiodiffusion et de Télévision (International

Radio and Television Organization)

PLL Phase-Locked Loop

RDS Radio Data System

RSSI Receiver Signal Strength Information

SDS Signal Dependent Stereo

VCO Voltage Controlled Oscillator

Table 50. Revision history

Document ID Release date Data sheet status Change notice Supersedes

TEA5777_1 20060411 Product data sheet - -

Product data sheet Rev. 01 — 11 April 2006 46 of 47

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

18. Legal information

18.1 Data sheet status

[1] Please consult the most recently issued document before initiating or completing a design.

[2] The term ‘short data sheet’ is explained in section “Deﬁnitions”.

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status

information is available on the Internet at URL http://www.semiconductors.philips.com.

18.2 Deﬁnitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modiﬁcations or additions. Philips Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences of

use of such information.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is intended

for quick reference only and should not be relied upon to contain detailed and

full information. For detailed and full information see the relevant full data

sheet, which is available on request via the local Philips Semiconductors

sales ofﬁce. In case of any inconsistency or conﬂict with the short data sheet,

the full data sheet shall prevail.

18.3 Disclaimers

General — Information in this document is believed to be accurate and

reliable. However, Philips Semiconductors does not give any representations

or warranties, expressed or implied, as to the accuracy or completeness of

such information and shall have no liability for the consequences of use of

such information.

Right to make changes — Philips Semiconductors reserves the right to

make changes to information published in this document, including without

limitation speciﬁcations and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Suitability for use — Philips Semiconductors products are not designed,

authorized or warranted to be suitable for use in medical, military, aircraft,

space or life support equipment, nor in applications where failure or

malfunction of a Philips Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

damage. Philips Semiconductors accepts no liability for inclusion and/or use

of Philips Semiconductors products in such equipment or applications and

therefore such inclusion and/or use is at the customer’s own risk.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. Philips Semiconductors makes no

representation or warranty that such applications will be suitable for the

speciﬁed use without further testing or modiﬁcation.

Limiting values — Stress above one or more limiting values (as deﬁned in

the Absolute Maximum Ratings System of IEC 60134) may cause permanent

damage to the device. Limiting values are stress ratings only and operation of

the device at these or any other conditions above those given in the

Characteristics sections of this document is not implied. Exposure to limiting

values for extended periods may affect device reliability.

Terms and conditions of sale — Philips Semiconductors products are sold

subject to the general terms and conditions of commercial sale, as published

at http://www.semiconductors.philips.com/proﬁle/terms, including those

pertaining to warranty, intellectual property rights infringement and limitation

of liability, unless explicitly otherwise agreed to in writing by Philips

Semiconductors. In case of any inconsistency or conﬂict between information

in this document and such terms and conditions, the latter will prevail.

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or the

grant, conveyance or implication of any license under any copyrights, patents

or other industrial or intellectual property rights.

18.4 Trademarks

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

I2C-bus — logo is a trademark of Koninklijke Philips Electronics N.V.

19. Contact information

For additional information, please visit: http://www.semiconductors.philips.com

For sales ofﬁce addresses, send an email to: sales.addresses@www.semiconductors.philips.com

Document status[1][2] Product status[3] Deﬁnition

Objective [short] data sheet Development This document contains data from the objective speciﬁcation for product development.

Preliminary [short] data sheet Qualiﬁcation This document contains data from the preliminary speciﬁcation.

Product [short] data sheet Production This document contains the product speciﬁcation.

Philips Semiconductors TEA5777

Low-power AM/FM stereo radio for handheld applications

For more information, please visit: http://www.semiconductors.philips.com.

For sales office addresses, email to: sales.addresses@www.semiconductors.philips.com.

Date of release: 11 April 2006

Document identifier: TEA5777_1

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

20. Contents

1 General description. . . . . . . . . . . . . . . . . . . . . . 1

2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.2 AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.3 FM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 Quick reference data . . . . . . . . . . . . . . . . . . . . . 2

5 Ordering information. . . . . . . . . . . . . . . . . . . . . 4

6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5

7 Pinning information. . . . . . . . . . . . . . . . . . . . . . 6

7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7

8 Functional description . . . . . . . . . . . . . . . . . . . 9

8.1 AM radio part . . . . . . . . . . . . . . . . . . . . . . . . . 10

8.1.1 AM RF ampliﬁer . . . . . . . . . . . . . . . . . . . . . . . 10

8.1.2 Tuning AM antenna circuit . . . . . . . . . . . . . . . 10

8.1.3 AM I/Q mixer. . . . . . . . . . . . . . . . . . . . . . . . . . 10

8.1.4 AM VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8.1.5 AM IF ﬁlter . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

8.1.6 AM IF ampliﬁcation and AM detection . . . . . . 11

8.2 FM radio part . . . . . . . . . . . . . . . . . . . . . . . . . 11

8.2.1 Low noise RF ampliﬁer. . . . . . . . . . . . . . . . . . 11

8.2.2 FM I/Q mixer. . . . . . . . . . . . . . . . . . . . . . . . . . 11

8.2.3 FM VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.2.4 FM IF ﬁlter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.2.5 FM demodulator . . . . . . . . . . . . . . . . . . . . . . . 12

8.3 Stereo decoder. . . . . . . . . . . . . . . . . . . . . . . . 12

8.3.1 MPX decoder . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.3.2 Signal strength depending mono/stereo blend 12

8.3.3 Pilot detector. . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.3.4 De-emphasis. . . . . . . . . . . . . . . . . . . . . . . . . . 12

8.4 Tuning function . . . . . . . . . . . . . . . . . . . . . . . . 12

8.4.1 Reference frequency generation . . . . . . . . . . 13

8.4.2 Crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . 13

8.4.3 IF counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8.4.4 Automatic search operation . . . . . . . . . . . . . . 13

8.5 RF level information (RSSI) . . . . . . . . . . . . . . 14

8.6 Software programmable ports . . . . . . . . . . . . 14

9 Control functions via I2C-bus and 3-wire bus 15

9.1 Bus interface. . . . . . . . . . . . . . . . . . . . . . . . . . 15

9.2 Bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 15

9.3 I2C-bus mode . . . . . . . . . . . . . . . . . . . . . . . . . 16

9.3.1 Write mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 16

9.3.2 Read mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 17

9.3.3 Dbus function in I2C-bus mode (silent readout) 17

9.4 3-wire bus mode. . . . . . . . . . . . . . . . . . . . . . . 18

9.4.1 Write mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 18

9.4.2 Read mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 19

9.4.3 Dbus function in 3-wire mode (silent readout) 19

9.5 Data transfer in I2C-bus and 3-wire mode . . . 20

9.5.1 Register deﬁnition in write mode . . . . . . . . . . 20

9.5.1.1 FM write mode . . . . . . . . . . . . . . . . . . . . . . . . 20

9.5.1.2 AM write mode. . . . . . . . . . . . . . . . . . . . . . . . 22

9.5.2 Register deﬁnition in read mode . . . . . . . . . . 25

9.5.2.1 FM read mode . . . . . . . . . . . . . . . . . . . . . . . . 25

9.5.2.2 AM read mode . . . . . . . . . . . . . . . . . . . . . . . . 26

10 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 28

11 Thermal characteristics . . . . . . . . . . . . . . . . . 28

12 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 29

13 Application information . . . . . . . . . . . . . . . . . 40

13.1 AM coil requirements and alignment . . . . . . . 40

13.1.1 AM coil requirements . . . . . . . . . . . . . . . . . . . 40

13.1.2 AM coil alignment. . . . . . . . . . . . . . . . . . . . . . 40

14 Test information. . . . . . . . . . . . . . . . . . . . . . . . 41

15 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 43

16 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 45

17 Revision history . . . . . . . . . . . . . . . . . . . . . . . 45

18 Legal information . . . . . . . . . . . . . . . . . . . . . . 46

18.1 Data sheet status. . . . . . . . . . . . . . . . . . . . . . 46

18.2 Deﬁnitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

18.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 46

18.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 46

19 Contact information . . . . . . . . . . . . . . . . . . . . 46

20 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47