DS90UB913Q, DS90UB914Q
SNLS420B –JULY 2012–REVISED APRIL 2013
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Table 1. DS90UB913Q Control Registers (continued)
Addr
(Hex)
Name
Bits Field
R/W
Default
Description
7-bit Deserializer Device ID Configures the I2C Slave ID
of the remote Deserializer. A value of 0 in this field
disables I2C access to the remote Deserializer. This field
is automatically configured by the Bidirectional Control
Channel once RX Lock has been detected. Software may
overwrite this value, but should also assert the FREEZE
DEVICE ID bit to prevent overwriting by the Bidirectional
Control Channel.
Desializer Device
ID
7:1
RW
0x00
0x06
DES ID
1: Prevents auto-loading of the Deserializer Device ID by
the bidirectional control channel. The ID will be frozen at
the value written.
0
Freeze Device ID
RW
0
0
0: Update
7-bit Remote Deserializer Device Alias ID Configures the
decoder for detecting transactions designated for an I2C
Deserializer device. The transaction will be remapped to
the address specified in the DES ID register.
A value of 0 in this field disables access to the remote
I2C Slave.
Deserializer ALIAS
ID
7:1
0
RW
0x07
0x08
0x09
DESAlias
RSVD
Reserved
7-bit Remote Slave Device ID Configures the physical I2C
address of the remote I2C Slave device attached to the
remote Deserializer. If an I2C transaction is addressed to
the Slave Alias ID, the transaction will be remapped to
this address before passing the transaction across the
Bidirectional Control Channel to the Deserializer. A value
of 0 in this field disables access to the remote I2C slave.
7:1
SLAVE ID
RW
0x00
0x00
SlaveID
0
RSVD
Reserved
7-bit Remote Slave Device Alias ID Configures the
decoder for detecting transactions designated for 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.
7:1
SLAVE ALIAS ID
RW
SlaveAlias
0
RSVD
Reserved
Number of back-channel CRC errors during normal
operation
Least Significant byte
0x0A
0x0B
CRC Errors
CRC Errors
7:0
CRC Error Byte 0
R
0
0
Number of back-channel CRC errors during normal
operation
7:0
CRC Error Byte 1
R
Most Significant byte
Revision ID
0x00: Production
7:5
4
Rev-ID
R
R
R
R
0
0
0
0
1: RX LOCKED
0: RX not LOCKED
RX Lock Detect
BIST CRC Error
Status
1: CRC errors in BIST mode
0: No CRC errors in BIST mode
3
1: Valid PCLK detected
0: Valid PCLK not detected
2
PCLK Detect
1: CRC error is detected during communication with
Deserializer.
0x0C
General Status
1
0
DES Error
R
R
0
0
This bit is cleared upon loss of link or assertion of CRC
ERROR RESET in register 0x04.
0: No effect
1: Cable link detected
0: Cable link not detected
This includes any of the following faults
— Cable Open
LINK Detect
— '+' and '-' shorted
— Short to GND
— Short to battery
24
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