DS90UB903Q Datasheet, PDF (20/41 Pages) Texas Instruments – 10 - 43MHz 18 Bit Color FPD-Link III Serializer and Deserializer with Bidirectional Control Channel

TABLE 1. DS90UB903Q Control Registers
Addr
(Hex)
Name
Bits Field
R/W
7:1 DEVICE ID
0
I²C Device ID
RW
0 SER ID SEL
7:3 RESERVED
2 STANDBY
RW
1
Reset
DIGITAL
1 _RESET0
RW
0 DIGITAL RESET1 RW
2
Reserved
7:0 RESERVED
Reserved
7:6 RESERVED
VDDIO Control 5 VDDIO CONTOL RW
VDDIO Mode
4 VDDIO MODE
RW
I²C Pass-
I²C PASS-
3
Through
3
THROUGH
RW
RESERVED
2 RESERVED
PCLK_AUTO
1 PCLK_AUTO
RW
TRFB
0 TRFB
RW
4
RESERVED 7:0 RESERVED
5
I²C Bus Rate 7:0 I²C BUS RATE
RW
7:1 DES DEV ID
RW
6
DES ID
0 RESERVED
7:1 SLAVE DEV ID
RW
7
Slave ID
0 RESERVED
8
Reserved
7:0 RESERVED
9
Reserved
7:0 RESERVED
A
Reserved
7:0 RESERVED
Default Description
0xB0'h
7-bit address of Serializer; 0x58'h
(1011_000X'b) default
0: Device ID is from ID[x]
1: Register I²C Device ID overrides ID[x]
0x00'h Reserved
Standby mode control. Retains control register data.
Supported only when MODE = 0
0
0: Enabled. Low-current Standby mode with wake-up
capability. Suspends all clocks and functions.
1: Disabled. Standby and wake-up disabled
0
1: Resets the device to default register values. Does not
self clear affect device I²C Bus or Device ID
0
1: Digital Reset, retains all register values
self clear
0x20'h Reserved
11'b Reserved
Auto V_DDIO detect
1
Allows manual setting of VDDIO by register.
0: Disable
1: Enable (auto detect mode)
VDDIO voltage set
1
Only used when VDDIOCONTROL = 0
0: 1.8V
1: 3.3V
I²C Pass-Through
1
0: Disabled
1: Enabled
0
Reserved
Switch over to internal 25 MHz Oscillator clock in the
absence of PCLK
1
0: Disable
1: Enable
Pixel Clock Edge Select:
0: Parallel Interface Data is strobed on the Falling Clock
1
Edge.
1: Parallel Interface Data is strobed on the Rising Clock
Edge.
0x80'h Reserved
0x40'h
I²C SCL frequency is determined by the following:
f_SCL = 6.25 MHz / Register value (in decimal)
0x40'h = ~100 kHz SCL (default)
Note: Register values <0x32'h are NOT supported.
0xC0'h Deserializer Device ID = 0x60'h
(1100_000X'b) default
Reserved
0x00'h Slave Device ID. Sets remote slave I²C address.
Reserved
0x00'h Reserved
0x01'h Reserved
0x00'h Reserved
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