Z0220516PSC1961 - Zilog, Inc. - Datasheet.Directory

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TELEPHONE: 408.558.8500 • FAX: 408.558.8300 • INTERNET: HTTP://WWW.ZILOG.COM

MODEM CONTROLLER IDEAL FOR LOW POWER

CONSUMPTION, SMALL SIZE REQUIREMENTS

PRODUCT SPECIFICATION

Z02205

PS001000-MOD0599

ii Z02205 PS001000-MOD0599

tions, or technology described is intended to suggest possible uses and may be superseded. ZiLOG, INC.

DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF

THE INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT. ZiLOG

ALSO DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY INFRINGEMENT

RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR TECHNOLOGY

DESCRIBED HEREIN OR OTHERWISE. Except with the express written approval of ZiLOG, use of

information, devices, or technology as critical components of life support systems is not authorized. No

licenses are conveyed, implicitly or otherwise, by this document under any intellectual property rights.

PS001000-MOD0599 1

RODUCT

PECIFICATION

Z02205 1

MODEM CONTROLLER IDEAL FOR LOW POWER

CONSUMPTION, SMALL SIZE REQUIREMENTS

FEATURES

Includes AT command set interpreter in on-chip ROM—

no external memory required

Suppor ts Tone dia l or Pul se di al

Call progress monitoring controls

Handshake controls

Guard Tone controls

Line quality monitoring and Auto-Retrain

Auto-Dial and Auto-Answer

Glueless interface to Z02201 modem data pump

Watch-Dog Timer (WDT)/Power-On Reset (POR)

Type-I Caller ID

Dynamic power management

CMOS design for low power consumption

0°C to +7 0°C commercial temperature range

28-pin DIP, SOIC package

4.5V to 5.5V operating range

GENERAL DESCRIPTION

The Z02205 V.22bis Modem Controller serves as the mo-

dem controller in embedded V.22bis modem applications.

A complete modem can be made by adding ZiLOG data

pump (Z02201), phone line interface, and the required DTE

interface. The Z02205 has been designed for low-cost use

and inclu des a gluele ss interf ace to the ZiLOG data pumps.

The Z02205 is ideal for applications where small size and

low power consumption are requirements.

The Z02205 operates over dial-up telephone connections,

provides auto-dial and ring detect, and operates in either

SYNC or ASYNC modes.

The Z02205 includes AT command and modem control

firmware in on-chip ROM. It also includes enhanced wake-

up circuitry, programmable Watch-Dog Timers (WDT), and

low-noise/EMI options.

AT commands stored on-chip in ROM provide control over

the following modem controller functions:

Call progress monitoring

Handshake negotiation

Dial controls—pulse or tone

S-registers

Auto-answer and auto-dial

Guar d tone s

On-hook and off-hook

Auto-retrain

Standard Z02205 sample devices and demonstration boards

contain controller code tailored for operation on the North

American phone network. For production usage, customers

must modify the controller code to meet the requirements

of their particular country and application.

Device ROM

(KB) RAM*

(Bytes) Speed

(MHz)

Z02205 16 237 16

Z02205

Modem Controller ZiLOG

2PS001000-MOD0599

Note: All signals with an overline, are active Low. For exam-

ple, B/W, in which WORD is active Low; and B/W, in

which BYTE is active Low.

Power connections follow conventional descriptions be-

low:

Connection Circuit Device

Power VCC VDD

Ground GND VSS

Figure 1. Functi onal Bloc k Diagram

Figure 2. Z02205 Pin Diagram (SOIC/ DIP)

Z02205

Controller

Parallel

Z02201

Eye Pattern

Interface

Line

Interface

Oscilloscope

Telephone

Line

Data

Access

Arrangement

Serial

DTE

Optional

Speaker

Optional

Z02922

Data Pump

Optional

DPRD

DPWR

DPRESET

MUTE

VCC

XTAL2

XTAL1

DPIRQ

RINGDET

DTR

DCD

DPCS

GND

RxD

TxD

SHUNT

Z02205

14 15

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 3

PIN DESCRIPTION

Table 1. Z02205 Pin Identification

Pin # Symbo l Function Direction

1–3 D5–D7 DSP Register Data Lines 5 through 7 In/Output

4DPRD Data Pump Read Output

5DPWR Data Pump Write Output

6 DPRESET Data Pump Reset Output

7MUTE Speaker Mute Output

CC Power Supply

9XTAL2 Crystal Oscillator Output

10 XTAL1 Crystal Oscillator Input

11 DPIRQ Data Pump Interrupt Request Input

12 RINGDET Ring Detect Input Input

13 DTR Data Terminal Ready Input

14 DCD Data Carrier Detect Output

15 SHUNT Pulse Dial Shunt Relay Output Output

16 TxD Data Transmit Output

17 OH Off Ho ok Rel ay Out put Output

18 RxD Data Receive Input

19–21 A0–A2 DSP Register Address Lines 0 through 2 Output

22 GND Ground

23 DPCS Data Pump Chip Select Output

24–28 D0–D4 DSP Register Data Lines 0 through 4 In/Output

Z02205

Modem Controller ZiLOG

4PS001000-MOD0599

ABSOLUTE MAXIMUM RATINGS

Stresses greater than those listed under “Absolute Maxi-

mum Ratings” may cause permanent damage to the device.

This rating is a stress rating only. Functional operation of

the devi ce at any condition above those indi cated in the op -

erational sections of these specifications is not implied. Ex-

posure to absolute maximum rating conditions for an ex-

tended period may affect device reliability.

Total power dissipation should not exceed 1.21 W for the

package. Power dissipation is calculated as follows:

Parameter Min Max Units Notes

Ambient Temperature under Bias 0+70C

Storage Temperature –65 +150 C

Voltage on any Pin with Respect to VSS –0.6 +7 V 1

Voltage on VDD Pin with Respect to VSS –0.3 +7 V

Voltage on XTAL1 and RESET Pins with Respect to VSS –0.6 VDD+1 V 2

Total Power Dissipatio n 1.21 W

Max i mum Allowable Current out of VSS 220 mA

Maximum Allowable Current into VDD 180 mA

Maxi mum Allowa ble Current i nto an Input Pin –600 +600 µA 3

Maximum Allowable Current into an Open-Drain Pin –600 +600 µA 4

Maxi mum Allowa ble Output Current Sinked by Any I/O Pin 25 mA

Maximum Allowable Output Current Sourced by Any I/O Pin 25 mA

Notes:

1. This applies to all pins except XTAL pins and where otherwise noted.

2. There is no input protection diode from pin to VDD and curr ent into pin is limited to ±600 µA.

3. This excludes XTAL pins.

4. Device pin is not at an output Low state .

Total Power Dissipation = VDD x [ IDD – (sum of IOH) ] = + sum of [ (VDD – VOH) x IOH] + sum of (V0L x I0L)

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 5

STANDARD TEST CONDITIONS

The characteristics listed below apply for standard test con-

ditions as noted. All voltages are referenced to GND. Pos-

itive current flows into the referenced pin (Figure 3).

CAPACITANCE

TA = 25°C, VCC = GND = 0V, f = 1.0 MHz, Unmeasured pins to GND

DC ELECTRICAL CHARACTERISTICS

Figure 3. Test Load Diagram

From Output

Under Test

150 pFI

Parameter Min Max

Input capacitance 0 12 pF

Output capacitance 0 12 pF

I/O capacitance 0 12 pF

VCC TA = 0° C to +70°C

Sym Parameter Note [3] Min Max Typical [1]

@ 25°C Units Conditions Notes

VCH Clock Input High

Voltage 5.5V 0.7 VCC VCC+0.3 2.6 V Driven by

External Clock

Generator

VCL Clock Input Low

Voltage 5.5V GND–0.3 0.2 VCC 2.1 V Driven by External

Clock Generator

VIH Input High

Voltage 5.5V 0.7 VCC VCC+0.3 2.6 V

VIL Input Low

Voltage 5.5V GND–0.3 0.2 VCC 1.6 V

VOH1 Output High

Voltage 5.5V VCC–0.4 4.8 V IOH = –2.0 mA 8

VOL1 Output Low

Voltage 5.5V 0.4 0.1 V IOL = +4.0 mA 8

VOL2 Output Low

Voltage 5.5V 1.2 0.4 V IOL = +12 mA 8

VOFFSET Comparator

Input Offset

Voltage

5.5V 25 10 mV 10

IIL Input Leakage 5.5V –1 2 0.004 µA VIN = 0V, VCC

IOL Output Leakage 5.5V –1 1 0.004 µA VIN = 0V, VCC

Z02205

Modem Controller ZiLOG

6PS001000-MOD0599

IIR Reset Input

Current 5.5V –20 –180 –85 µA

ICC Supply Current 5.5V 25 20 mA @ 16 MHz 4

ICC1 Standby Cur rent

(HALT Mode) 5.5V 8 3.7 mA VIN = 0V, VCC

@ 16 MHz 4

ICC2 Standby Cur rent

(STOP Mode) 5.5V 10 4 µA VIN = 0V, VCC WDT is

not Running 6,11

5.5V 800 600 µA VIN = 0V, VCC WDT is

Running 6,11,

VICR Input Common

Mode

Voltage Range

5.5V 0 VCC–1.0V V 10

IALL Auto Latch Low

Current 5.5V 1.4 15 5 µA 0V < VIN < VCC 9

IALH Auto Latch High

Current 5.5V –1.0 –8 –6 µA 0V < VIN < VCC 9

VLV VCC Low

Voltage

Protection

Voltage

2.8 V 4 MHz max Int. CLK

Freq. 7

2.2 3.1 2.8 6 MHz max Int. CLK

Freq. 7,13

VOH Output High

Voltage

(Low EMI

Mode)

5.0V VCC–0.4 4.8 V IOH = –0.5 mA

VOL Output Low

Voltage

(Low EMI

Mode)

5.0V 0.4 0.1 V IOL = 1.0 mA

Notes:

1. Typicals at VCC = 5.0V.

2. GND = 0V.

3. The VDD voltage specification of 5.5V guarantees 5.0V ±0.5V with typicals at VCC–5.0V.

4. All outputs unloaded, I/O pins floating, inputs at rail.

5. CL1 = CL2 = 10 pF.

6. Same as note [4] except i nputs at VCC.

7. The VLV voltage increases as the temperature decreases and will overlap lower VCC operating region.

8. Standard Mode (not Low EMI).

9. Auto Latch (Ma sk Opti on) sel ec ted.

10. For analog comparator, inputs when analog comparators are enabled.

11. Clock must be forced Low, when XTAL1 is clock-driven and XTAL2 is floating.

12. Excludes clock pins.

13. 0°C to 70°C (standard temperature).

VCC TA = 0° C to +70°C

Sym Parameter Note [3] Min Max Typical [1]

@ 25°C Units Conditions Notes

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 7

AC ELECTRICAL CHARACTERISTICS

Additional Timing Diagram

Fig u re 4. Additi onal Timing

Clock

2 2 3

TIN

IRQN

7 7

Clock

Setup

Stop

Mode

Recovery

Source

Z02205

Modem Controller ZiLOG

8PS001000-MOD0599

Additional Timing Table (SCLK/TCLK = XTAL/2)

Note

TA = 0°C to +70°C

[3] 16 M Hz

No Symbol Parameter VCC Min Max Units Notes

1 TpC Input Clock Period 5.5V 62.5 DC ns 1,7

5.5V 250 DC ns 1,8

2 TrC,TfC Clock Input Rise & Fall Times 5.5V 15 ns 1

3 TwC Input Clock Width 5.5V 31 ns 1

5.5V 125 ns 1,8

4 TwTinL Timer Input Low Width 5.5V 70 ns 1

5 TwTinH Timer Input High Width 5.5V 5TpC 1

6 TpTin Timer Input Period 5.5V 8TpC 1

7 TrTin, TfTin Timer Input Rise & Fall Timer 5.5V 100 ns 1

8A TwIL Int. Request Low Time 5.5V 70 ns 1,2

8B TwIL Int. Request Low Time 5.5V 5TpC 1,3

9 TwIH Int. Request Input High Time 5.5V 5TpC 1,2

10 Twsm Stop- Mode Recove ry Width Spec 5.5V 12 ns

11 Tost Oscillator Startup Time 5.5V 5TpC 4

D1, D0

[Note]

12 Twdt Watc h-Dog Timer Delay Time

before time-out 5.5V 3.5 ms 0, 0 [5]

5.5V 7 ms 0, 1 [5]

5.5V 14 ms 1, 0 [5]

5.5V 56 ms 1, 1 [5]

13 TPOR Power-On Reset Delay 5.5V 1.5 13 ms

Notes::

1. Timing Reference uses 0.7 VCC for a logic 1 and 0.2 VCC for a logic 0.

2. Interrupt request via Port 3 (P31–P33).

3. Interrupt request via Port 3 (P30).

4. SMR–D5 = 0.

5. Reg. WDTMR.

6. The VDD voltage specification of 5.5V guarantees 5.0V ± 0.5V.

7. Standard Oscillator mode, Pcon RegD7=1.

8. Maximum frequency for external XTAL Clock is 4MHz when using low EMI oscillator mode, Pcon Reg D7=0.

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 9

PIN FUNCTIONS

XTAL1 Crystal 1 (Time-based Input).

XTAL2 Crystal 2 (Time-based Output).

DPWR Data Pump Write (Output).

DPRESET Data Pump Reset (Output).

DPIRQ Data Pump Interrupt Request (Input).

DPCS Data Pump Chip Select (Output).

DTR Data Te r m inal Re ady (Inpu t ).

DCD Data Carrier Detect (Output).

MUTE Speaker Mute Control (Output).

DPRD Data Pump Read (Output).

D0–D7 DSP Register Da ta Lines (Input/O utput).

A0–A2 DSP Register Address Lines (Output).

TxD Transmit Data (Output).

RxD Read Data (Input).

OH Off Hook Relay Output (Output).

SHUNT Pulse Dial Sh unt Relay Outpu t (O utput).

RINGDET Ring De tect Input (Input).

Z02205

Modem Controller ZiLOG

10 PS001000-MOD0599

AT COMMAND SET

Command lines are typed to the modem from the te rminal

when the modem is in the Idle or Command state. The mo-

dem does not execute any commands from a command line

until the command line is ended by the end of line character

<CR>. A command line is a string of characters starting with

A and T characters and ending with a special end-of-line

character, <CR>. Characters typed before the AT are ig-

nored. Comma nd line s contai n no more th an 40 char acter s

after the AT (not counting spaces). The modem does not ex-

ecute any commands in a command line that is too long.

To Echo command line characters, use the E1 command.

Typing mistakes can be aborted by using a special Back-

Space character, <BS> , af te r the in itia l A and T characters

are enter ed.

A partial command line can be aborted by typing a Ctrl-X

character. The modem returns an OK result code and ig-

nores the partial AT command line.

Command lines may contain several commands one after

another. The ANSWER (A), DIAL (D), and GO ON-LINE (O)

commands cause any subsequent commands in the com-

mand line to be ignored.

Command Line Execution

The characters in a command line execute one at a time. Any

unexpected characters, except control characters, stop com-

mand line e xecution and re turn an ERROR result code . Un-

expected characters include numbers outside the range of

values acc epted by the command. All control chara cters in

a command line except Ctrl-X and the special characters

such as <CR> and <BS> are ignored.

The numeri cal ar gument o f a command is ass umed to be 0

if not provided. For example, the commands ATH<CR> and

ATH0<CR> both hang up the telephone line.

When th e mode m has executed a command l ine , t h e r es ul t

code of the l ast command e xecuted is re turned to the ter-

minal.

If the value to be written to a modem S-register is outside

the range of values accepted by the S-register, then its value

is set to the nearest allowed value .

Leading zeros in numeric arguments, including S-register

numbers, are ignored. For example, ATS1 is 2 and ATS01

is 2 both set S-register S1 to 2.

All numeric arguments, including S-register numbers, are

decimal.

AT Command Prefix

Each modem command line begins with the letters A and

T. The modem uses these characters to determine the data

rate and parity of data from the termina l.

A/ Repeat Last Command

To repeat the commands in th e last command li ne, type th e

letters A and / instead of A and T.

<CR>End Of Line Character

This character is typed to end a command line. The value

of the <CR> character is stored in S-register S3. The default

is 13, the A SCII carriage return characte r.

When the <CR> character is entered, the modem executes

the commands in the command line.

Note: Default values in Table 2 are denoted by bold.

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 11

Table 2. AT Command Set

Command Function and Description

A Answer The A command causes the modem go off-hook and respond to an incoming call. Uses

this command after the modem has returned the RING result code.

When modems successfully complete the answering process, they each return a

CONNECT result code and enter the On-Line state.

If no transmit carrier signal is received fro m the calling modem within the time specified

in S-regi s ter S7, th e modem h a ngs up, returns the NO CA RRI ER res ul t code, and enters

the Idle state.

Any commands following the answer command on the command line are ignored.

This command is aborted if a key is pressed before the answer process is completed, or

when DTR is off, if some options in the &Q or &D commands have been used.

B Communication Standard

Option The B command indicates to the modem which special telephone line modulation

standards to use. The modem can be configured to use:

B0 Uses the ITU-T modulation standards for all telephone line data rates. This

includes V.22 for the 1200 bps telephone line data rate and V.21 for the 300

bps telephone line data rate. If S-register S37 is set to 1 (or 2), then V.23 is

used with the originating modem transmitting at 75 bps and receiving at

1200 bps. If S-register S37 is set to any other value, V.23 is not used.

B1 If the 1200 bps telephone line data rate is required, Bell 212A is used

instead of V. 22. Th is is t he def ault val ue fo r North Amer ica. The 1 200 bps

telephone line data rate is required only if:

• S-register S37 is set to 5, or

• S-register S37 is set to 0, and the terminal data rate is 12 00 bps.

If the 300 bps telephone line data rate is required, Bell 103 is used instead

of V.21. The 300 bps telephone line data rate is required only if:

• S-register S37 is set to 3, or

• S-register S37 is set to 0 and the terminal data rate is 300 b ps.

If neither the 1200 bps nor 300 bps telephone line data rate are required,

then a setting of B1 is ignored and the m odem respond s as if B0 was set.

B2 Same as B0 for the 1200 bps and 300 bps telephone line date rate. Uses

V.23 with the originating modem transmitting at 1200 bps and receiving at

75 bps, if S-register S37 is s e t to 1 or 2.

B3 Same as B0 for the 1200 bps and 300 bps telephone line date rate. Uses

V.23 with the originating modem transmitting at 75 bps and receiving at

1200 bps, if S-register S37 is set to 1 or 2.

&C Data Carrier Detect

Options &C determines how the modem’s DCD signal relates to the carrier signal from the other

modem. This option occurs only at the begin ning of a t elephone line connect ion. If &C is

issued from the Command state, it will not have an immediate effect.

&C0 During asynchronous operation (&Q0 in effect), DCD is on at all times.

During synchronous operation (&Q1), DCD indicates the state of the

carrier signal from the other modem using S-registers S9 and S10. This is

the default value in North America.

&C1 Indicates the state of the carrier signal from the other modem using S-

regist ers S9 and S10.

Z02205

Modem Controller ZiLOG

12 PS001000-MOD0599

D Dial The D command causes the modem to dial a telephone call according to the digits and

dial modifiers in the dial string following the command. Any commands following the

dial string on a command line are ignored, unless the semicolon dial modifier is the last

character in the dial string. If the modem is off-hook when the Dial command is given,

the modem dials immediately without trying to detect a dial tone. Characters other than

digits and dial modifiers in a dial string are ignored; however, they are counted as

characters in the command line buffer.

If line current sensing is enabled, and line current is detected before the modem is taken

OFF-HOOK when the modem dials, a NO CARRIER result code is displayed and the

modem enters the IDLE state. If the modem needs not dial (that is, ATD with no dial

string), the modem assumes the call was manually established and attempts to make a

connection.

The D command is not valid when the modem is in the On-Line state.

See “Dial Modifiers and “Mode m Re sult Codes for more inform ation.

&D Data Terminal Ready

Options &D determines ho w th e modem resp onds to the DTR signal from the terminal. The

country configuration may prevent the modem from detecting terminal DTR. In this

case, the modem assumes DTR is always on. In North America, terminal DTR is

normally detected. If DTR detection has been prevented, the modem will respond with

an ERROR result to this command.

The response to chan ges in DTR also depe nds on the &Q and &D commands. This table

defines what happens when DTR goes off for all possible combinations of the &D and

&Q commands. To see what happens when DTR go es on, ref er to the &Q comm and. The

default value is &D0 in North America:

&D0 &D1 &D2 &D3

&Q0 None B C D

&Q1 A B C D

A The modem hangs up the telephone line and is sues an OK result code.

B If in the On-Line state, the modem go es into the Command state, and issues

an OK result code.

C The modem hangs up the telephone line and issu es an OK result code.

Auto-Answer is disabled as long as DTR stays off.

D The modem resets.

Table 2. AT Command Set (Continued)

Command Function and Description

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 13

E Command Mode

Character Echo E tells the modem to echo or not ech o characters sent from the terminal while the modem

is accepting AT commands.

E0 Does not echo characters sent from the terminal.

E1 Echo characters sent from the terminal. This is the default value in North

America.

%E Automatic Retrai n

Options The %E command con trols whether the modem will initiate retrain with the oth er

modem during a telephone line connection during operation in data modes supporting

retrain. The modem always responds to a retrain operation initiated by the remote

modem. The mo dem can be forced to initiate a retrain by the On-Line (O1) command.

%E0 Do no t init iate a retrain.

%E1 Initiate a retrain if the data pump indicates that on e is required.

&F Recall Factory Profile &F changes these AT command options and S-registers to default

values. The default values may be changed for use in different countries. The values for

North America are:

S-registers

S0=0 S1=0 S2=43 S3=13 S4=10 S5=8

S6=2 S7=30 S8=2 S9=6 S10=14 S11=95

S12=50 S17=10 S25=5 S28=0 S29=25 S37=0

Commands

B1 E1 M1 P Q0 V1 X4 &C0 &D0 &G0 &P0 &Q0 %E1

&G Guard Tone Options &G indicates the mode m which guard tone to transmit when the modem is transmitting

the high band (that is, answer handshake and answer mode).

&G0 No guard to ne. This is the default value in North America.

&G1 550-Hz guard tone (V.22 and V.22bis only)

&G2 1800-Hz guard tone (V.22 and V.22bis only)

H Hook H0 Hangs up the telephone line.

H1 Goes off hook without answerin g a telephone call. This may be disabled in

countries prohibiting its use.

Table 2. AT Command Set (Continued)

Command Function and Description

Z02205

Modem Controller ZiLOG

14 PS001000-MOD0599

&HT P TT T est Command The &HT command causes the modem to transmit tones for P TT testing. The test tone is

generated until a character is typed on the modem’s terminal. The country configuration

may disable this command. The modem returns an ERROR result if this command

is issued.

&HT0-9 DTMF tone for digit n where the command was &HTn.

&HT10 DTMF tone"*"

&HT11 DTMF tone "#"

&HT12 DTMF tone "A"

&HT13 DTMF tone "B"

&HT14 DTMF tone "C"

&HT15 DTMF tone "D"

&HT16 V.21 channel 1 mark

&HT17 V.21 channel 2 marks

&HT18 V.23 1200bps marks

&HT19 V.23 75bps marks

&HT20 V.21 channel 1 spaces

&HT21 V.21 channel 2 spaces

&HT22 V.23 1200bps spaces

&HT23 V.23 75bps spaces

&HT24 V.22 originate mode

&HT25 V.22 answer mode

&HT26 V.22bis originate mode

&HT27 V.22bis answer mode

&HT28 V.25 calling tone

&HT29 55 0Hz guard tone

&HT30 1800Hz guard tone

&HT31 Silence

&HT32 Detect 2100 Hz answer tone

&HT33 Detect all supported answer tones simultaneously

&HT34 Detect dial tone

&HT35 Detect call progress tones

I Identification The I command queries the modem for information that can be used to determine the

modem’s compatibility with other software and to ensure the modem is operating

properly.

I0 Displays pr oduct code. T he modem reports its product code to the termi nal.

The modem produces information text dependent upon its features and

capabilities.

I1 Displays ROM checksum. The modem reports the value of its ROM

checksum. The decimal number displayed is the eight bit sum (from 0 to

255) of all the bytes in ROM.

I2 Tests the ROM checksum. The modem checks its ROM to ensure it is

correct. The modem reports a result code indicating whether the ROM is

OK or in ERROR.

I3 Displays Soft ware Versio ns. The mo dem reports the modem cont r oll er and

data pump software versions, and the modem controller software release

date, to the terminal.

I4 Displays Modem Identification. The modem reports a configured

identification message to the terminal.

Table 2. AT Command Set (Continued)

Command Function and Description

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 15

M Speaker On/Off Options The country configuration may disable the speaker. If so, this command returns an

ERROR result.

M0 Speaker always off.

M1 Speaker on until carrier detected. This is the default value in North

America.

M2 Speaker always on; stays on after carrier is detected.

M3 Speaker off as digits are dialled, but on during ringback and on until carrier

signal is detected.

O Return to On-Line

Mode This command returns the modem to the on-line mode. It is frequ ently used after the

escape character sequence (+++) to resume communication with the remote modem. If

handshaking is started, the modem uses Originate or Answer mode handshaking,

depending upon whether the modem originated or answered the telephone call.

O0 Returns the modem to the On-Line state from the Command state during a

telephone line connection. The modem starts handshaking if no telephone

line connection and the modem was off hook.

O1 Returns the modem to the On-Line state and retrain its data pump during a

telephone line connection. The modem starts handshaking if there was no

telephone line connection is detected but the modem was OFF-HOOK.

&P Pulse Dial Make/Break

Ratios Sets cadence of pulse dial. The country configuration may disable this command,

forcing particular pulse dialing parameters. In this event, the modem returns an ERROR

result if this comm and is issued.

&P0 39%/61% make/break ratio and 10 pulses per second when pulse dialing.

This is the default valu e.

&P1 33%/67% make/break ratio and 10 pulses per second when pulse dialing.

&P2 39%/61% make/break ratio and 20 pulses per second when pulse dialing.

&P3 33%/67% make/break ratio and 20 pulses per second when pulse dialing.

Q Result Code Display

Options This command allows the user to either display result codes o r to not display result

codes.

Q0 Result codes are displayed. This is the default value for North America.

Q1 Resu lt codes are not displayed.

&Q Communications Mode

Options The &Q command selects the terminal communication mode.

&Q0 Asynchronous. The modem handshakes as the originator if S-register S0

is 0, and as the answerer if S0 is 1. This is the default value for North

America.

&Q1 Synchronous. Hangs up if DTR goes from on to off after the time in S-

Sn Set the current S-register

to n This command sets the current S-register to the value n selected by the user. For

example, AT S7 will set the current S-register to S7. Default value is 0 . Sn addresses a

particular S-register number so future commands like? and = will read of write the S-

? Read an S-Register This command displays the value of the last S-register named in the Sn command.

=x Write an S-register This command writes the value x to the last S-register named in the Sn command. The

range of valid values for x depen ds upon which S -register i s being writ ten. 0 is assum ed

if no value is given for x.

T Tone dialing Selects the tone method of dialing.

V Result Code Format This command changes the result code display format

V0 All result codes are displayed as numbers.

V1 All result codes are displayed as words (verbose form). This is the default

value for North America.

Table 2. AT Command Set (Continued)

Command Function and Description

Z02205

Modem Controller ZiLOG

16 PS001000-MOD0599

X Call Progress The X command controls whether or not a busy signal or dial tone is detected when

dialing. The X command also limits the result codes the modem returns when dialing.

The operation of the X command is configurable for operation in different countries.

X0 Neither busy signal nor dial tone are detected. When a telephone line

connection is made, the result code does not indicate the telephone line data

rate.

X1 Neither busy signal nor dial tone are detected. When a telephone line

connection is made, the result code indicates the telephone line data rate.

X2 Busy signal is not detected. Dial tone is detected. When a telep hone line

connection is made, the result code indicates the telephone line data rate.

X3 Busy signal is detected. Dial ton e is not detected. When a telephon e line

connection is made, the result code indicates the telephone line data rate.

X4 Both busy signal and dial tone are detected. When a telephone line

connection is made, the result code indicates the telephone line data rate.

This is the default valu e in North America.

The @ and W dial modifiers are not affected by the X command. The @ dial modifier

may return the result codes 8 (NO ANSWER) or 7 (BUSY) each time it appears in the

dial string. The W dial modifier may return the result codes 6 (NO DIALTONE) or 7

(BUSY) each time it appears in the dial string.

#CID= Caller Id Op tions The #CID = command controls how the modem displays

North American caller identification information. The #CID=

command is valid only if the Modem Controller software has

been compiled to support Caller ID. If the software has not

been compiled to support Caller ID then the modem responds

with an ERROR result code to a #CID= command.

Caller Id information is dis played only when it is provided by

the telephone company, and only when the terminal data rate

is 2400 bps. Lower data rates are too slow to display the

Caller Id information.

#CID=0 Do not display caller identificat ion information.

This is the default value.

#CID=1 Display the information in as formatted data.

#CID=2 Display the information as unformatted data.

#CID=? Display the current sett ing of the #CID=

command option.

Table 2. AT Command Set (Continued)

Command Function and Description

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 17

DIAL MODIFIERS

Dial modifiers perform special functions within a dial com-

mand.

Example: ATDT9W1552368!@#71234;<CR>

The example instructs the modem to use tone dialing (T),

to acc ess a num ber outs ide a P BX (9), t o wait for dia l tone

(W), to dial the number 1552368, to do a hook-flash (i.e.

timed b reak reca ll), to wa it for qui et answer , and to iss ue

the PBX t ra n sf er co de #7 before di al ing extensi on number

1234, then to r eturn to the Command state be fore initiati ng

the handshake.

Table 3. Dial Modifiers

Modifier Function

0–9 A B C D # * Dialing digits and characters. The digits and characters 0-9 A B C D # * specify what numbers the modem

dials. The characters A B C D # * work only when tone dialing is used. The characters are ignored when

pulse dialing is used. The characters A, B, C, and D may be disabled in countries prohibiting their use.

P Pulse dialing. P selects the pulse method of dialing. P can be issued within a dial command or as a separate

command. The default method of dialing is Pulse.

R Originates a Call in Answer Mode. R makes the modem handshake in answer mode so it can originate a call

to an originate-only modem.

T Tone dialing. T selects the tone method of dialing. T can be issued within a dial command or as a separate

command. The default method of dialing is Pulse.

W Waits for dial tone. W makes the modem wait for a dial tone before proceeding . If no dial tone is detected the

modem hangs up the telephone line and returns the NO DIALTONE result code.

, Delays Processing of Next Character. A comma (,) makes the modem pause for the length of time in S-

@ Waits for Quiet Answer. @ makes the modem listen for 5 seconds of silence before continuing. The modem

will wait up to the length of time in S-register S7. If 5 seconds (configurable by country) of silence are not

detected within the time period in S-register S7, the modem hangs up and returns the NO ANSWER result

code. If 5 seconds of silence are detected, the modem continues processing the other characters in the dial

string.

! Timed Break Recall (Hookflash). A ! makes the modem hang up the telephone line for th e length of time in

S-register S29, then take the telephone line off hook again. This is frequently used to access a PBX’s call

transfer function.

; Returns to Command State after dialing. A semicolon (;) tells the mo dem to return to command state after

dialing without breaking the telephone line connection and without handshaking with the other modem. The

semicolon may only be used when calling a vo ice mail system that permits tones to tran smit num bers wh en a

connection has been established.

Z02205

Modem Controller ZiLOG

18 PS001000-MOD0599

MODEM S-REGISTERS

The value of an S-regist er is modified by ATSn = x, where

n is the register number and x is the value to be stored in

that particular register. Each S-register has three values that

may be configured for different countries: a default value,

an upper limit, and a lower limit. The values shown in this

manual are for North America.

Table 4. Modem S-Registers

S0 0–255 Rings Sets number of ring s to auto -answer . The count ry config uration may disable t he modem’s

ability to detect a telephone line ring signal. In this case, the modem will never

automatically answer the telephone regardless of the S0 setting. Default = 0 (auto-answer

disabled)

S1 0–255 Rings Returns the number of times the phone rings. Default = 0

S2 0–255 ASCII Sets Escape Sequence Character. Setting S2 to a value greater than 127 disables the

character escape sequence, preventing the modem from returning to Command state

when in the On-Line state. Default = 43

S3 0–127 ASCII Sets the End of Line character. Default = 13

S4 0–127 ASCII Sets the Line Feed Character. Default = 10

S5 0–127 ASCII Sets the BackSpace Character. Default = 8

S6 2–255 Seconds Delays to Wait Before Performing a Blind Dial. Default = 2 seconds

S7 1–255 Seconds Delays to Wait for Carrier after dialing. Default = 30 seconds

S8 0–255 Seconds Delays to Wait when a Comma Dial Modifier is Processed. Default = 2 sec.

S9 1–255 1/10th sec Time Carrier Must be Present Before Being Recognized. Default = 0.6 sec.

S10 1–255 1/10th sec Delay Between Lost Carrier and Hang Up. Setting S-register S10 to 255 prevents the

modem hanging up the telephone line because of a loss of carrier. Default = 14 tenths of a

second

S11 5 0–255 msec Multi-Frequency Tone duration. Default = 95 millis econ ds

S12 0–255 1/50th sec Escapes Prompt dela y tim e. Thi s is th e promp t dela y ti me for escape seq uen ces from the

On-Line state to the Command state. Default = 50 fiftieths of a second

S13 Reserved Reserved Reserved

S14 Reserved Reserved Reserved

S15 Reserved Reserved Reserved

S16 Reserved Reserved Reserved

S17 –6 to –43 –dBm Sets Transmit level. Default = –10 dBm

S18 Reserved Reserved Reserved

S19 Reserved Reserved Reserved

S20 Reserved Reserved Reserved

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 19

S21 Reserved Reserved Reserved

S22 Reserved Reserved Reserved

S23 Reserved Reserved Reserved

S24 Reserved Reserved Reserved

S25 0–255 seconds

or 1/100 sec. During sy nchrono us opera tion with the & Q1 com mand in ef fect, S-reg ister S25 indicates

the number of seconds after a telephone line connection is made before the modem

examines DTR. This register allows sufficient time to disconnect the modem from an

asynchronous terminal and attach it to a synchronous terminal. In the On-Line or

Command state during any mode of operation, changes in DTR for less than S25

hundredths of a second are ignored.

S26 Reserved Reserved Reserved

S27 Reserved Reserved Reserved

S28 0–255 minutes Terminal inactivity timeout. Hangs up the modem after S28 minutes if no characters are

received from the modem’s terminal. Default = 0

S29 0–255 1/50th sec Hook Flash On-Ho ok time. The amount of time in 20 millisecond units the modem will

leave the telephone on-hook while performing a hook-flash according to the “!” dial

string modifier. Default = 25 fiftieths of a second.

S37 0–6 code Sets the Highest Line Rate. This register determines the highest telepho ne line data rate

the modem will u se wh en connecting with a remote modem. See “Setting the Highest

Line Rate” section on the following page. Default = 0.

Table 4. Modem S-Registers (Continued)

Z02205

Modem Controller ZiLOG

20 PS001000-MOD0599

SETTING THE HIGHEST LINE RATE

The connect rate can be selected by S-register S37. The fol-

lowing connect rates are supported.

Table 5. S-Register 37 Values

S37

Value Carrier Data Rate

0 The data rate of the last AT

command

1 V.23 Refer to the Communication

Standard Options (B) command

for a description.

2 V.23 See immediately above.

3 V.21, Bell 103 300 bps. See the B command

4 Reserved

5 V.22, Bell 212A 1200 bps. See the B command

6 V.22bis 2400 bps

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 21

MODEM RESULT CODES

A result code is a l ine of tex t or a number the modem sends

to the termin al indic ating th e resul t of a comm and exe cu-

tion. S ome CONNECT result codes indicate the telephone

line data rate. The following table provides a list of the avail-

able result codes.

Table 6. Modem Result Codes

Number Word Result Code Description

0 OK Command Line Executed without errors

1 CONNECT The modem is in the on-line state, ready to transfer data.

2 RING The modem has detected a ring signal on the telephone line. The country

configur ation may disable th e modem’s ability to detect a telephone line ring

signal.

3 NO CARRIER Either no carrier sign al was detected when an swering o r placing a telephone ca ll,

or the carrier was lost during a call. The modem also returns this respo ns e

message when the telephone line connection is broken for any reason.

4 ERROR An invalid command was issued, or there was an error at any place in the

command line.

5 CONNECT 1200 The modem is in the on-line state, ready to transfer data.

6 NO DIALTONE No dial tone was detected when the modem took the telephone line off hook.

7 BUSY The modem detected a busy signal on the telephone line.

8 NO ANSWER Not enough silence was detected when the @ dial modifier was used.

10 CONNECT 2400 The modem is in the on-line state, ready to transfer d ata. The teleph one line d ata

rate is 2400bps.

16 CONNECT 1200/75 The modem is in the On-Line state, ready to transfer data. This modem transmits

at 1200 bps and receives at 75 bps.

17 CONNECT 75/1200 The modem is in the On-Line state, ready to transfer data. This modem transmits

at 75 bps and receives at 1200 bps.

20 BLACKLISTED The modem will not all ow any n umber to be dialed until after the modem is

reset.

21 DELAYED The modem will not allow any number to be dialed now , but will allow dialing at

some future time.

Z02205

Modem Controller ZiLOG

22 PS001000-MOD0599

ESCAPE SEQ UENCES

An escape sequence is defined as one or more particular

characters sent from the terminal to the modem during the

On-Line st ate. This sequence is activated to s witch the mo-

dem to the command state so modem commands may be en-

tered during a telephone line connection. The Escape Se-

quence char acte rs are ty pical ly sent t o the other modem as

data.

An escape sequence should not occur accidentally during

an exchange of dat a between two mo dems. Unfort unately ,

it is i mposs ible to guar ant ee that any esca pe s eque nce will

never occur naturally, because there are no restrictions on

the data or timing between characters sent between two mo-

dems during the On-Line state.

The only method of switching from the On-Line state to the

Command state that never occurs naturally during an ex-

change of data is the Data Terminal Ready signal (the &D1

command). The terminal has complete control of this signal

and it is not part of the data exchanged between the modems.

The Hayes Escape Sequence was adopted by many modem

manufact urers and communication programs before Hayes

was granted a patent for the escape sequence guard times.

Now the unpatented TIME INDEPENDENT ESCAPE SE-

QUENCE (TIES) has gained popularity with many modem

manufacturers.

TIES Escape Sequence

TIES was developed by a number of modem manufacturers

in response to Hayes enforcing patent rights for their escape

sequence guard time patent.

The Time Independent Escape Sequence, is a sequence of

3 escape characters (+ characters by default). When these

characters are recognized, the modem enters the COM-

MAND state without sending a confirming result code to the

terminal. The modem then starts a prompt delay timer. From

that point:

If one of th e recognized AT commands is receive d be-

fore the timer expires, the timer is stopped, the command

is executed, and its result code is sent to the terminal.

If any other data is received whil e the timer is running,

the timer is stopped , the mod em returns to the On -Line

state, and the received data is sent to the other modem.

If the timer expires, a confirming result code is sent to

the terminal, indicating the modem is in the Command

state.

The escape character and prompt delay timer can be

changed by writing new values to S-registers S2 and S12.

CARRIER DETECTION

After Handshaking, the modem determines if a telephone

line c onne cti on ex ists b y de tec ting t he ca rrie r si gnal from

the other modem. If the carrier is not detected for a long

enough period of time, the modem assumes the telephone

line connection with the other modem has been broken. The

modem uses S-register S9 to determine how long a carrier

must be prese nt before it is detected. The modem uses S-

before the telephone line is hung up.

BLACKLISTING MANAGEMENT

Blackli st ing applies s epar at el y to each number di al ed, and

indicates the call blocking capability for specific phone

number s. To save Z02205 RAM, calls are t reated as if they

are all to the same number.

The first connection attempt after modem reset or a suc-

cessful connection is always allowed. If a connection at-

tempt is not successful, then each following connection

attempt is c heck ed as follow s:

1. If voice answer was detected too many times the

attemp t is not allo wed, Modem Result Code indicates

the call is BLACKLISTED.

2. If the attempt occurred too quickly (within the inter-

call timing period) then the attempt is not allowed,

Modem Result Code indicates the call is DELAYED.

3. If there is a blacklisting period limiting the number of

attempts that may be made within the period, and too

many attempts have been made, then the attempt is not

allowed, Modem Result Code indicates the call is

either DELAYED (if a call may be made later), or

BLACKLISTED (if no call may be made later).

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 23

The following blacklisting parameters can be controlled:

Minimum de lay in seconds between suc cessive dial at-

tempts

Number of successi ve d ial a ttempt s afte r whic h th e fol-

lowing parameter applies

Minimum de lay in se conds be tween succes sive dial a t-

tempts after

Unsuccessful dial attempts

Maximum number of dial atte mp ts permitted in a series

of dial attempts

Blacklisting perio d in minutes for each series of d i al at-

tempts

DYNAMIC POWER MANAGEMENT

The Z02205 incorporates a low-power SLEEP mode. In this

mode, the clock is shut down (effectively stopping the part).

The Modem Controller software automatically puts the mo-

dem’s data pu mp into a power- saving SLEEP mode when it

is not used and there is no connection. The Modem Con-

troller software also puts the Modem Controller to sleep

when possible. This power-saving feature reduces the

amount of current used by 8 mA.

This sleep feature operates transparently to the modem’s op-

eration, saving approximately 58 mA of power when both

the modem data pump and controller are put into sleep

mode.

The modem controller goes to sleep under following con-

ditions:

Looking for an ’A’ (Auto Baud)

The ring line has been debounced

The RINGS register has been cleared

There are no incoming characters

There are no characters in the input queue

The Modem Controller is put to sleep until there is an in-

terrupt, such as:

A start bit from the terminal.

Telephone line ring detection from the telephone line in-

terface.

In SLEEP mode, the modem controller turns off the main

timer interrupt and turns on the ring detect interrupt, leaves

the start bit interrupt running - then halts until an interrupt

occurs.

The Modem Controller cannot sleep if dial blacklisting has

been enabl ed in the country par ameters and is being ti med.

Nor can the Modem Controller sleep if AT and D3 is set be-

cause a DTR On-to-Off transition can not wake it up

FUNCTIONAL DESCRIPTION

Clock. The Z02205 on-chip oscil lator has a high-gain, par-

allel-resonant amplifier for connection to a crystal (XTAL1

is Input, XTAL2 is Output). The crystal should be AT cut,

16 MHz max., with a series resistance (RS) of less than or

equal to 100 Ohms when counting from 1 MHz to 16 MHz.

Connect the crystal across XTAL1 and XTAL2 using the ven-

dor’s recommended capacitor values from each pin directly

to the device GROUND pin to reduce Ground noise injection

into the oscillator.

Note: For better noise suppression , the capacitors must be tied

directly to the device Ground pin (VSS).

Z02205

Modem Controller ZiLOG

24 PS001000-MOD0599

Figure 5. Oscillator Configuration

Power-On-Reset (POR). A timer circuit, clocked by a ded-

icated on-board RC oscillator, is used for the POWER-ON

RESET (POR) timer function. The POR time allows V

and

the oscillator circuit to stabilize before instruction execution

begins.

The POR time r circu it is a one-shot timer triggered by one

of four conditions:

Power fail to Power OK status.

STOP-MODE RECOVERY (if bit D5 of SMR is set to 1).

WDT time-out.

The POR time is a specified as TPOR.

XTAL1

XTAL2

*Preliminary value including pin parasitics

**Device ground pin

Ceramic Resonator or Crystal

C1, C2 = 22 pF TYP*

f = 8 MHz

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 25

Figure 6. Typical Modem Using Z02205 and a Z02201 Datapump

VCC

AVCC

VCC

AVCC

VCC

DECOUPLING CAPACITORS

EYE Pattern Generator is optional.

/DPRES

/DPWR /DPWR

/DPRD /DPRD

/DPCS /DPCS

/DPIRQ /DPIRQ

SOUT

SIN

/uPOH

/SHUNT

/RING

DCD

DTR

RxD

SIN

TxC

RxC/TST2

EYEOUT

EYECLK

EYESTB

/MUTE

/DOH

Y201

14.7456MHz

Y202

24.576MHz

C201

47 pF

C206

10uF

U204

74HC595

SER 14

SRCLK 11

SRCLR 10

RCLK 12

G13

15 QB

1QC

2QD

3QE

4QF

5QG

6QH

QH’

U205A

74HCT04

R203

100K

Z202B

1 uF

J201

R202

10K

U202

Z02201

TXD/DACK

38 RXD/DREQ

36 DCLK

37 RTS

40 OH

39 RLSD

27 D1

28 D2

29 D3

30 D4

31 D5

32 D6

33 D7

RS0

19 RS1

20 RS2

18 RD

25 WR

IRQ

EYEOUT

EYECLK

EYESTB

TXO+ 8

TXO- 9

RXI+ 16

RXI- 15

CF1 13

CF2 14

XTAL1 43

XTAL2 42

TST1 3

TST2 41

VDD 24

VDD 44

VSS 2

VSS 26

AVDD 7

AVDD 17

AVSS 10

AVSS 12

RESET

Z201B

1 uF

L201

10uH

Z202E

1 uF

U203

AD557

D7 1

D6 2

D5 3

D4 4

D3 5

D2 6

D1 7

D0 8

CS 10

CE 9

VOUT

15 VB

VCC

GND

12 GND

CN302

SOCKET PLCC S MT 44

X201

SHUNT

CN301

SOCKET DIP 28

J202

J203

C203

47 pF

R201

10K

R206

10K

C202

82 pF C204

68 pF

C205

68 pF

R205

10K

C207

0.1 uF

Z202A

0.1 uF

U206

AD557

D7 1

D6 2

D5 3

D4 4

D3 5

D2 6

D1 7

D0 8

CS 10

CE 9

VOUT

15 VB

VCC

GND

12 GND

U207

74HC595

SER 14

SRCLK 11

SRCLR 10

RCLK 12

G13

15 QB

1QC

2QD

3QE

4QF

5QG

6QH

QH’

U205B

74HCT04

U205C

74HCT04

U205D

74HCT04

Z202C

0.1 uF Z202D

0.1 uF Z202F

0.1 uF

Z201A

0.1 uF Z203

0.1 uF Z204

0.1 uF Z205

0.1 uF Z206

0.1 uF Z207

0.1 uF

U201

Z02205

VCC

8GND 22

XTAL1

XTAL2

TxD

16 OH

17 SHUNT

15 DCD

14 DTR/LCS

13 RINGDET/LCS

12 DPIRQ

11 RxD

D7 3

D6 2

D5 1

D4 28

D3 27

D2 26

D1 25

D0 24

MUTE/RI 7

DPRESET 6

DPWR 5

DPRD 4

DPCS 23

A2 21

A1 20

A0 19

SOUT

DCD

DTR

SIN

/SHUNT

/OH

/RING

RxD

TxC

RxC

/MUTE

TxA+

TxA-

RxA+

RxA-

Z02205

Modem Controller ZiLOG

26 PS001000-MOD0599

PACKAGE INFORMATION

Figure 7. 28-pin SOIC Package Diagram

Figure 8. 28-pin DIP Package Diagram

Z02205

ZiLOG Modem Controller

PS001000-MOD0599 27

ORDERING INFORMATION

Codes

Z02205 Compatibility Matrix for ZiLOG data pumps

ZiLOG recommends use of latest modem data pumps.

28-Pin SOIC Z0220516SSCR4292

Z0220516SSCR4259

Z0220516SSCR3641

Z0220516SSC1961

28-Pin DIP Z0220516PSCR4292

Z0220516PSCR4259

Z0220516PSCR3641

Z0220516PSC1961

Package

S = Smal l O utline Integra te d Chip (SOIC)

P = Plastic DIP

Standard

Temperature S = 0°C to +70°C

Speed 16 = 16 MHz

Environmental C = Plastic Standard

ROM Code R4292 = ROM code number 4292 (ROM code Version 3.4)

R4259 = ROM code number 4259 (ROM code Version 3.4)

R3641 = ROM code number 3641 (ROM code Version 3.0)

1961 suff ix = Blank Device; One Time Programmable (OTP)

Z02201

Code Version 0x31

ROM Code #R3470

Z02201

Code Version 0x48

ROM Code #4078

Z02922

Code Version 0x3A

ROM Code #R37 96

Z02922

Code Version 0x42

ROM Code #R3910

Z02205 Ver 3.0 Z02205 ROM #R3641

Z02205 Ver 3.4 Z02205 ROM #R4259 Z02205 ROM #R4292

Z 02205

dddd

ddd

S S

sfsssssssss

fghgf

R4259

Package

Environmental Flow

Temperature

ZiLOG Prefix

Speed

Product Number

Example is a Ver. 3.4 (R4259) Z02205 compatible with Ver. 31 (R3470) of Z02201,

OTP/ ROM Code

16 MHz, PLCC, 0°C to +70°C, Plastic Standard Flow

Z02205

Modem Controller ZiLOG

28 PS001000-MOD0599

Pre-Characterization Product:

The product represented by this product brief is newly introduced

and ZiLO G has not completed the full characterization of the prod-

uct. The CPS stat es wha t Zi LOG knows abou t thi s prod uct at this

time, but additional features or non-conformance with some aspects

of the product brief may be found, either by ZiLOG or its customers

in the course of further application and characterization work. In

addition, ZiLOG cautions that delivery m ay be uncertain at times,

due to start-up yield issues.

Low Margin:

Customer is advised that this product does not meet ZiLOG’s inter-

nal guardbanded test policies for the specification requested and is

supplied on an exception basis. Customer is cautioned that delivery

may be uncertain and that, in addition to all other limitations on

ZiLOG liability stated on the front and back of the acknowledgment,

ZiLO G makes no claim as to quality and reliability u nder the prod-

uct brief. The product remains subject to standard warranty for re-

placement due to defects in materials and workm anship.

may be co pied or reprod uced in any form or by any means w ithout

the prior written consent of ZiLOG , Inc. The information in this doc-

ument is subject to change without notice. Devices sold by ZiLOG,

Inc. are covered by warranty and patent indemnification provisions

appearing in ZiL OG, Inc. Terms and Conditions of Sale only.

ZILOG, INC. MAKES NO WARRANTY , EXPRESS, STATUTO-

RY, IMPLIED OR BY DESCRIPTION, REGARDING THE IN-

FORMATION SET FORTH HEREIN OR REGARDING THE

FREEDOM OF THE DESCRIBED DEVICES FROM INTEL-

LECTUAL PROPERTY INFRINGEMENT. ZILOG, INC.

MAKES NO WARRANTY OF MERCHANTABILITY OR FIT-

NESS FOR AN Y PURPO SE .

ZiLOG, Inc. shall not be responsible for any errors that may appear

in this docu m en t. ZiL OG, Inc. makes n o co m mi tm ent to u pd ate o r

keep current the info rm ation contained in this document.

ZiLOG’ s products are not authorized for use as critical components

in life su pport devices or systems unl ess a specif ic written agree-

ment perta ining to such intended use is execu te d between the cus-

tomer and ZiLOG prior to use. Life support devices or systems are

those which are int ended for surgical implantat ion into the body,

or which sustains life whose failure to perform, when properly used

in accordance with instructions for use provided in the labeling, can

be reasonably ex pected to result in significant injury to the user.

ZiLOG, Inc.

910 East Hamilton Avenue, Suite 110

Campbell, CA 95008

Telephone (408) 558-8500

FAX 408 558-8300

Internet: http://www.zilog.com