DS90UH925Q Datasheet, PDF (32/47 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Serializer with HDCP

DS90UH925Q
ADD
(dec)
18
ADD
(hex)
0x12
Register
Name
Data Path
Control
19 0x13 Mode Status
Bit(s)
7
6
5
4
3
2
1
0
7:5
4
3
2
1
0
Register
Type
RW
RW
RW
RW
RW
RW
RW
R
R
R
R
R
Default
(hex)
0x00
0x10
Function Description
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
I2S Repeater Regeneration
Repeater 1: Repeater regenerate I2S from I2S pins
Regenerat 0: Repeater pass through I2S from video pins
ion
I2S
I2S Channel B Enable
Channel B 1: Set I2S Channel B Enable from reg_0x12[0]
Enable 0: Set I2S Channel B Enable from MODE_SEL pin
Override
18-bit
Video
Select
18–bit video 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
I2S Channel B Enable
Channel B 1: Enable I2S Channel B on B1 input
Enable 0: I2S Channel B disabled
Reserved
MODE_S MODE_SEL Status
EL
1: MODE_SEL decode circuit is completed
0: MODE_SEL decode circuit is not completed
Low
Low Frequency Mode Status
Frequency 1: Low frequency (5 - <15 MHz)
Mode
0: Normal frequency (15 - 85 MHz)
Repeater
Mode
Repeater Mode Status
1: Repeater mode ON
0: Repeater Mode OFF
Backward Backward Compatible Mode Status
Compatibl 1: Backward compatible ON
e Mode 0: Backward compatible OFF
I2S
I2S Channel B Mode Status
Channel B 1: I2S Channel B ON, 18-bit RGB mode with
Mode
I2S_DB enabled
0: I2S Channel B OFF; normal 24-bit RGB mode
32
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