DS90UB929-Q1 Datasheet, PDF (35/71 Pages) Texas Instruments – 720p HDMI to FPD-Link III Bridge Serializer

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DS90UB929-Q1
SNLS457 – NOVEMBER 2014
Register Maps (continued)
ADD
(dec)
8
ADD
(hex)
0x08
Register Name
Slave Alias[0]
10
0x0A CRC Errors
11
0x0B
12
0x0C General Status
13
0x0D GPIO0
Configuration
Bit(s)
7:1
0
7:0
7:0
7:5
4
3
2
1
0
7:4
3
2:0
Table 8. Serial Control Bus Registers (continued)
Register
Type
RW
R
R
R
R
R
R
R
RW
RW
Default
(hex)
0x00
0x00
0x00
0x00
0x00
Function
Description
Slave Alias ID
0
CRC Error
LSB
CRC Error
MSB
Link Lost
BIST CRC
Error
TMDS Clock
Detect
DES Error
Link Detect
Revision ID
GPIO0 Output
Value
GPIO0 Mode
7-bit Slave Alias ID of the remote Slave 0 attached to the remote Deserializer. The
transaction will be remapped to the address specified in the Slave ID 0 register. A value
of 0 in this field disables access to the remote Slave 0.
Reserved.
Number of back channel CRC errors – 8 least significant bits. Cleared by 0x04[5].
Number of back channel CRC errors – 8 most significant bits. Cleared by 0x04[5].
Reserved.
Link lost flag for selected port:
This bit indicates that loss of link has been detected. This register bit will stay high until
cleared using the CRC Error Reset in register 0x04.
Back channel CRC error(s) during BIST communication with Deserializer. This bit is
cleared upon loss of link, restart of BIST, or assertion of CRC Error Reset bit in 0x04[5].
0: No CRC errors detected during BIST.
1: CRC error(s) detected during BIST.
Pixel clock status:
0: Valid clock not detected at HDMI input.
1: Valid clock detected at HDMI input.
CRC error(s) during normal communication with Deserializer. This bit is cleared upon
loss of link or assertion of 0x04[5].
0: No CRC errors detected.
1: CRC error(s) detected.
Link detect status:
0: Cable link not detected.
1: Cable link detected.
Revision ID.
Local GPIO Output Value. This value is output on the GPIO pin when the GPIO function
is enabled, the local GPIO direction is set to output, and remote GPIO control is disabled.
0: Output LOW (default).
1: Output HIGH.
Determines operating mode for the GPIO pin:
xx0: TRI-STATE™.
001: GPIO mode, output.
011: GPIO mode, input.
101: Remote-hold mode. The GPIO pin will be an output, and the value is received from
the remote Deserializer. In remote-hold mode, data is maintained on link loss.
111: Remote-default mode. The GPIO pin will be an output, and the value is received
from the remote Deserializer. In remote-default mode, GPIO's Output Value bit is output
on link loss.
Copyright © 2014, Texas Instruments Incorporated
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