DS90UH927Q-Q1 Datasheet, PDF (37/68 Pages) Texas Instruments – 5-MHz to 85-MHz 24-Bit Color FPD-Link III Serializer with HDCP

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DS90UH927Q-Q1
SNLS433C – NOVEMBER 2012 – REVISED JANUARY 2015
Register Maps (continued)
ADD
(dec)
17
18
Table 5. Serial Control Bus Registers (continued)
ADD
(hex)
Register Name
Bit
Register
Type
Default
(hex)
Function
Description
0x11 GPIO_REG7
7
RW
0x00 GPIO_REG Local GPIO Output Value This value is output on the
and
8 Output GPIO pin when the GPIO function is enabled, and the
GPIO_REG8
Value
local GPIO direction is Output.
Configuration
0: Output LOW (default)
1: Output HIGH
6
Reserved
5
RW
GPIO_REG Local GPIO Direction
8 Direction 0: Output (default)
1: Input
4
RW
GPIO_REG GPIO Function Enable
8 Enable 0: Enable normal operation (default)
1: Enable GPIO operation
3
RW
GPIO_REG
7 Output
Value
Local GPIO Output Value This value is output on the
GPIO pin when the GPIO function is enabled, and the
local GPIO direction is Output.
0: Output LOW (default)
1: Output HIGH
2
Reserved
1
RW
GPIO_REG Local GPIO Direction
7 Direction 0: Output (default)
1: Input
0
RW
GPO_REG GPIO Function Enable
7 Enable 0: Enable normal operation (default)
1: Enable GPIO operation
0x12 Data Path
Control
7
0x00
Reserved
6
RW
Pass RGB
Pass RGB on DE
Setting this bit causes RGB data to be sent
independent of DE in DS90UH927, which can be
used to allow DS90UH927 to interoperate with
DS90UB926, DS90UB928, and DS90UR906.
However, setting this bit prevents HDCP operation
and blocks packetized audio. This bit does not need
to be set in Backward Compatibility mode.
0: Normal operation (default)
1: Pass RGB independent of DE
5
RW
4
RW
3
RW
DE Polarity
I²S
Repeater
Regen
I²S Channel
B Enable
Override
This bit indicates the polarity of the DE (Data Enable)
signal.
0: DE is positive (active high, idle low) (default)
1: DE is inverted (active low, idle high)
Regenerate I²S Data From Repeater I²S Pins
0: Repeater pass through I²S from video pins (default)
1: Repeater regenerate I²S from I²S pins
I²S Channel B Override
0: Set I²S Channel B Disabled (default)
1: Set I²S Channel B Enable from reg_12[0]
2
RW
1
RW
0
RW
18-bit Video
Select
I²S
Transport
Select
I²S Channel
B Enable
Video Color Depth Mode
0: Select 24-bit video mode (default)
1: Select 18-bit video mode
Select I²S Transport Mode
0: Enable I²S Data Island Transport (default)
1: Enable I²S Data Forward Channel Frame Transport
I²S Channel B Enable
0: I²S Channel B disabled (default)
1: Enable I²S Channel B
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