DS90UH949-Q1
SNLS453 –NOVEMBER 2014
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Pin Functions (continued)
PIN I/O, TYPE DESCRIPTION
NAME NO.
CEC 1 IO, Open- Consumer Electronic Control Channel Input/Output Interface.
Drain Pull-up with a 27kΩresistor to 3.3V
X1 39 I, LVCMOS Optional Oscillator Input: This pin is the optional reference clock for CEC. It must be
connected to a 25 MHz 0.1% (1000ppm), 45-55% duty cycle clock source at CMOS-level
1.8V. Leave it open if unused.
FPD-LINK III SERIAL
DOUT0- 26 O FPD-Link III Inverting Output 0
The output must be AC-coupled with a 0.1µF capacitor for interfacing with 92x deserializers
and 33nF capacitor for 94x deserializers
DOUT0+ 27 O FPD-Link III True Output 0
The output must be AC-coupled with a 0.1µF capacitor for interfacing with 92x deserializers
and 33nF capacitor for 94x deserializers
DOUT1- 22 O FPD-Link III Inverting Output 1
The output must be AC-coupled with a 0.1µF capacitor for interfacing with 92x deserializers
and 33nF capacitor for 94x deserializers
DOUT1+ 23 O FPD-Link III True Output 1
The output must be AC-coupled with a 0.1µF capacitor for interfacing with 92x deserializers
and 33nF capacitor for 94x deserializers
LFT 20 Analog FPD-Link III Loop Filter
Connect to a 10nF capacitor to GND
CONTROL
SDA 14 IO, Open- I2C Data Input / Output Interface
Drain Open drain. Must have an external pull-up to resistor to 1.8V or 3.3V. See I2CSEL pin. DO
NOT FLOAT.
Recommended pull-up: 4.7kΩ.
SCL 15 IO, Open- I2C Clock Input / Output Interface
Drain Open drain. Must have an external pull-up resistor to 1.8V or 3.3V. See I2CSEL pin. DO
NOT FLOAT.
Recommended pull-up: 4.7kΩ.
I2CSEL 6 I, LVCMOS I2C Voltage Level Strap Option
Tie to VDDIO with a 10kΩresistor for 1.8V I2C operation.
Leave floating for 3.3V I2C operation.
This pin is read as an input at power up.
IDx 19 Analog I2C Serial Control Bus Device ID Address Select
MODE_SEL0 18 Analog Mode Select 0. See Table 6.
MODE_SEL1 32 Analog Mode Select 1. See Table 6.
PDB 31 I, LVCMOS Power-Down Mode Input Pin
INTB 13 O, Open- Open Drain. Remote interrupt. Active LOW.
Drain Pull up to VDDIO with a 4.7kΩresistor.
REM_INTB 40 O, Open- Remote interrupt. Mirrors status of INTB_IN from the deserializer.
Drain Note: External pull-up to 1.8V required. Recommended pull-up: 4.7kΩ.
INTB = H, Normal Operation
INTB = L, Interrupt Request
SPI PINS (DUAL LINK MODE ONLY)
MOSI 8 IO, LVCMOS SPI Master Out Slave In. Shared with D_GPIO0
MISO 10 IO, LVCMOS SPI Master In Slave Out. Shared with D_GPIO1
SPLK 11 IO, LVCMOS SPI Clock. Shared with D_GPIO2
SS 12 IO, LVCMOS SPI Slave Select. Shared with D_GPIO3
HIGH SPEED (HS) BIDIRECTIONAL CONTROL CHANNEL GPIO PINS (DUAL LINK MODE ONLY)
D_GPIO0 8 IO, LVCMOS HS GPIO0. Shared with MOSI
D_GPIO1 10 IO, LVCMOS HS GPIO1. Shared with MISO
D_GPIO2 11 IO, LVCMOS HS GPIO2. Shared with SPLK
D_GPIO3 12 IO, LVCMOS HS GPIO3. Shared with SS
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