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DS90UH929-Q1 Datasheet, PDF (4/77 Pages) Texas Instruments – 720p HDMI to FPD-Link III Bridge Serializer with HDCP
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DS90UH929-Q1
SNLS458 – NOVEMBER 2014
NAME
CEC
X1
PIN
NO.
1
39
FPD-LINK III SERIAL
DOUT-
26
DOUT+
27
LFT
20
CONTROL
SDA
14
SCL
15
I2CSEL
6
IDx
19
MODE_SEL0
18
MODE_SEL1
32
PDB
31
INTB
13
REM_INTB
40
Pin Functions (continued)
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I/O, TYPE
DESCRIPTION
IO, Open-
Drain
I, LVCMOS
Consumer Electronic Control Channel Input/Output Interface.
Pull-up with a 27kΩ resistor to 3.3V
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.
O
O
Analog
FPD-Link III Inverting Output
The output must be AC-coupled with a 0.1µF capacitor for interfacing with 92x deserializers
and 33nF capacitor for 94x deserializers
FPD-Link III True Output
The output must be AC-coupled with a 0.1µF capacitor for interfacing with 92x deserializers
and 33nF capacitor for 94x deserializers
FPD-Link III Loop Filter
Connect to a 10nF capacitor to GND
IO, Open-
Drain
IO, Open-
Drain
I, LVCMOS
Analog
Analog
Analog
I, LVCMOS
O, Open-
Drain
O, Open-
Drain
I2C Data Input / Output Interface
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.
I2C Clock Input / Output Interface
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.
I2C Voltage Level Strap Option
Tie to VDDIO with a 10kΩ resistor for 1.8V I2C operation.
Leave floating for 3.3V I2C operation.
This pin is read as an input at power up.
I2C Serial Control Bus Device ID Address Select
Mode Select 0. See Table 4.
Mode Select 1. See Table 4.
Power-Down Mode Input Pin
Open Drain. Remote interrupt. Active LOW.
Pull up to VDDIO with a 4.7kΩ resistor.
Remote interrupt. Mirrors status of INTB_IN from the deserializer.
Note: External pull-up to 1.8V required. Recommended pull-up: 4.7kΩ.
INTB = H, Normal Operation
INTB = L, Interrupt Request
4
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