DS90UH929-Q1 Datasheet, PDF (41/77 Pages) Texas Instruments – 720p HDMI to FPD-Link III Bridge Serializer with HDCP

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DS90UH929-Q1
SNLS458 – NOVEMBER 2014
Register Maps (continued)
ADD
(dec)
28
ADD
(hex)
0x1C
Register Name
GPIO Pin Status
1
29
0x1D GPIO Pin Status
2
30
0x1E Transmitter Port
Select
Bit(s)
7
6
5
4
3
2
1
0
7:1
0
7:3
2
1
0
Table 8. Serial Control Bus Registers (continued)
Register
Type
R
R
R
R
R
R
R
R
RW
RW
RW
Default
(hex)
0x00
0x00
0x01
Function
Description
GPIO7_REG GPIO7_REG input pin status.
Pin Status
Note: status valid only if pin is set to GPI (input) mode.
GPIO6_REG GPIO6_REG input pin status.
Pin Status
Note: status valid only if pin is set to GPI (input) mode.
GPIO5_REG GPIO5_REG input pin status.
Pin Status
Note: status valid only if pin is set to GPI (input) mode.
Reserved.
GPIO3 Pin
Status
GPIO3 input pin status.
Note: status valid only if pin is set to GPI (input) mode.
GPIO2 Pin
Status
GPIO2 input pin status.
Note: status valid only if pin is set to GPI (input) mode.
GPIO1 Pin
Status
GPIO1 input pin status.
Note: status valid only if pin is set to GPI (input) mode.
GPIO0 Pin
Status
GPIO0 input pin status.
Note: status valid only if pin is set to GPI (input) mode.
Reserved
GPIO8_REG GPIO8_REG input pin status.
Pin Status
Note: status valid only if pin is set to GPI (input) mode.
Reserved.
PORT1_I2C_E
N
Port1 I2C Enable.
Enables secondary I2C address. The second I2C address provides access to Port1
registers as well as registers that are shared between Port0 and Port1. The second I2C
address value will be set to DeviceID + 1 (7-bit format). The PORT1_I2C_EN bit must
also be set to allow accessing remote devices over the second link when the device is in
Replicate mode.
PORT1_SEL
Selects Port1 for register access from primary I2C address.
For writes, Port1 registers and shared registers will both be written.
For reads, Port1 registers and shared registers will be read. This bit must be cleared to
read Port0 registers.
This bit is ignored if PORT1_I2C_EN is set.
PORT0_SEL
Selects Port0 for register access from primary I2C address.
For writes, Port0 registers and shared registers will both be written.
For reads, Port0 registers and shared registers will be read. Note that if PORT1_SEL is
also set, then Port1 registers will be read.
This bit is ignored if PORT1_I2C_EN is set.
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