DS90UB921-Q1 Datasheet, PDF (32/57 Pages) Texas Instruments – 5 - 96 MHz 24-bit Color FPD-Link III Serializer with Bidirectional Control Channel

DS90UB921-Q1
SNLS488 – MARCH 2016
ADD
(dec)
8
ADD
(hex)
0x08
REGISTER NAME
Slave Alias
10
0x0A CRC Errors
11
0x0B
12
0x0C General Status
13
0x0D GPIO0 Configuration
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Table 7. Serial Control Bus Registers (continued)
BIT(S)
7:1
TYPE
RW
0
7:0
R
7:0
R
7:4
3
R
2
R
1
R
0
R
7:4
R
3
RW
2
RW
1
RW
0
RW
DEFAULT
(hex)
0x00
0x00
0x00
0x00
0x00
FUNCTION
DESCRIPTION
Slave Device
Alias ID
CRC Error LSB
CRC Error MSB
BIST CRC Error
PCLK Detect
DES Error
LINK Detect
RESERVED
GPIO0 Output
Value
GPIO0 Remote
Enable
GPIO0 Direction
GPIO0 Enable
7-bit Remote Slave Device Alias ID
Assigns an Alias ID to an I2C Slave device attached to the remote
Deserializer. The transaction will be remapped to the address specified in
the Slave ID register. A value of 0 in this field disables access to the remote
I2C Slave.
Reserved
Number of back channel CRC errors – 8 least significant bits
Number of back channel CRC errors – 8 most significant bits
Reserved
Back channel CRC error during BIST communication with Deserializer.
The bit is cleared upon loss of link, restart of BIST, or assertion of CRC
ERROR RESET in register 0x04.
PCLK Status
1: Valid PCLK detected
0: Valid PCLK not detected
Back channel CRC error during communication with Deserializer.
The bit is cleared upon loss of link or assertion of CRC ERROR RESET in
register 0x04.
LINK Status
1: Cable link detected
0: Cable link not detected (Fault Condition)
Reserved
Local GPIO output value
This value is output on the GPIO pin when the GPIO function is enabled,
the local GPIO direction is Output, and remote GPIO control is disabled.
Remote GPIO control
1: Enable GPIO control from remote Deserializer. The GPIO pin will be an
output, and the value is received from the remote Deserializer.
0: Disable GPIO control from remote Deserializer.
Local GPIO Direction
1: Input
0: Output
GPIO function enable
1: Enable GPIO operation
0: Enable normal operation
32
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