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DS90UB921-Q1 Datasheet, PDF (35/57 Pages) Texas Instruments – 5 - 96 MHz 24-bit Color FPD-Link III Serializer with Bidirectional Control Channel
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ADD
(dec)
17
18
19
ADD
(hex)
0x11
REGISTER NAME
GPO_REG7
Configurations
0x12 Data Path Control
0x13 Mode Status
DS90UB921-Q1
SNLS488 – MARCH 2016
Table 7. Serial Control Bus Registers (continued)
BIT(S)
7:4
3
TYPE
RW
RW
2:1
0
RW
7:6
5
RW
4
RW
3
2
RW
1
RW
0
7:5
4
R
3
R
2
R
1
R
0
R
DEFAULT
(hex)
0x00
0x00
0x10
FUNCTION
DESCRIPTION
Reserved
Reserved
GPO_REG7
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_REG7
Enable
GPO_REG7 function enable
1: Enable GPO operation
0: Enable normal operation
Reserved
DE Polarity
The bit indicates the polarity of the DE (Data Enable) signal.
1: DE is inverted (active low, idle high)
0: DE is positive (active high, idle low)
I2S Repeater
Regen
I2S Repeater Regeneration
1: Repeater regenerate I2S from I2S pins
0: Repeater pass through I2S from video pins
Reserved
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 Slect
1: Enable I2S Data Forward Channel Frame Transport
0: Enable I2S Data Island Transport
Reserved
Reserved
MODE_SEL
MODE_SEL Status
1: MODE_SEL decode circuit is completed
0: MODE_SEL decode circuit is not completed
Alternate
Alternate Frequency Mode Status
Frequency Mode Indicates either Low Frequency mode or Intermediate Frequency mode,
depending on FSEL status. See Frequency Mode Optimizations.
Repeater Mode
Repeater Mode Status
1: Repeater mode ON
0: Repeater Mode OFF
Reserved
18-Bit Mode
18-bit Mode Strap Status. The initial strap value can be overridden by
register 0x12[2].
1: 18-bit RGB mode
0: 24-bit RGB mode
Copyright © 2016, Texas Instruments Incorporated
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