DS90UH925Q-Q1 Datasheet, PDF (32/56 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Serializer with HDCP

DS90UH925Q-Q1
SNLS336J – OCTOBER 2010 – REVISED NOVEMBER 2014
www.ti.com
Register Maps (continued)
ADD
(dec)
17
18
ADD
(hex)
0x11
0x12
REGISTER
NAME
GPO_REG8
and
GPO_REG7
Configurations
Data Path
Control
Table 6. Serial Control Bus Registers (continued)
Bit(s)
7
6:5
4
3
2:1
0
7
6
5
4
3
2
1
0
REG-
ISTER
TYPE
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
DEFAULT
(hex)
FUNCTION
DESCRIPTION
0x00
0x00
GPO_REG
8 Output
Value
Local GPO_REG8 output value
This value is output on the GPO pin when the GPO
function is enabled.
(The local GPO direction is Output, and remote
GPO control is disabled)
Reserved
GPO_REG GPO_REG8 function enable
8 Enable 1: Enable GPO operation
0: Enable normal operation
GPO_REG
7 Output
Value
Local GPO_REG7 output value
This value is output on the GPO pin when the GPO
function is enabled, the local GPO direction is
Output, and remote GPO control is disabled.
Reserved
GPO_REG GPO_REG7 function enable
7 Enable 1: Enable GPO operation
0: Enable normal operation
Reserved
Pass RGB
Setting this bit causes RGB data to be sent
independent of DE.
It allows operation in systems which may not use
DE to frame video data or send other data when DE
is de-asserted.
Note that setting this bit prevents HDCP operation
and blocks packetized audio.
This bit does not need to be set in Backwards
Compatible mode
1: Pass RGB independent of DE
0: Normal operation
(DE gates RGB data transmission - RGB data is
transmitted only when DE is active)
DE Polarity
The bit indicates the polarity of the Data Enable
(DE) signal.
1: DE is inverted (active low, idle high)
0: DE is positive (active high, idle low)
I2S
Repeater
Regenerati
on
I2S Repeater Regeneration
1: Repeater regenerate I2S from I2S pins
0: Repeater pass through I2S from video pins
I2S
Channel B
Enable
Override
I2S Channel B Enable
1: Set I2S Channel B Enable from reg_0x12[0]
0: Set I2S Channel B Enable from MODE_SEL pin
18-bit Video 18–bit video select
Select
1: Select 18-bit video mode
Note: use of GPIO(s) on unused inputs must be
enabled by register.
0: Select 24-bit video mode
I2S
Transport
Select
I2S Transport Mode Select
1: Enable I2S Data Forward Channel Frame
Transport
0: Enable I2S Data Island Transport
I2S
Channel B
Enable
I2S Channel B Enable
1: Enable I2S Channel B on B1 input
0: I2S Channel B disabled
32
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