DS90UB926Q Datasheet, PDF (33/57 Pages) Texas Instruments – 5 - 85 MHz 24-bit Color FPD-Link III Deserializer with Bidirectional Control Channel

DS90UB926Q
ADD
(dec)
6
ADD Register
(hex) Name
0x06 I2C Control
[2]
7 0x07 Remote
Device ID
8 0x08 SlaveID[0]
Bit(s)
7
6
5
4:3
2
1
0
7:1
0
7:1
0
Register
Type
R
RW
RW
RW
RW
RW
RW
RW
RW
Default Function Descriptions
(hex)
0x00
Forward
Channel
Sequence
Error
Control Channel Sequence Error Detected It indicates
a sequence error has been detected in forward control
channel. It this bit is set, an error may have occurred in
the control channel operation.
Clear
Sequence
Error
It clears the Sequence Error Detect bit
This bit is not self-clearing.
Reserved
SDA Output SDA Output Delay
Delay
This field configures output delay on the SDA output.
Setting this value will increase output delay in units of
50 ns. Nominal output delay values for SCL to SDA are:
00 : 250ns
01: 300ns
10: 350ns
11: 400ns
Local Write Disable Remote Writes to Local Registers through
Serializer (Does not affect remote access to I2C slaves
at Deserializer)
1: Stop remote write to local device registers
0: remote write to local device registers
I2C Bus
Timer
Speed
Speed up I2C Bus Watchdog Timer
1: Timer expires after approximately 50 ms
0: Timer expires after approximately 1s
I2C Bus
Timer
Disable
Disable I2C Bus Timer When the I2C Timer may be
used to detect when the I2C bus is free or hung up
following an invalid termination of a transaction. If SDA
is high and no signalling occurs for approximately 1 s,
the I2C bus is assumed to be free. If SDA is low and
no signaling occurs, the device will attempt to clear the
bus by driving 9 clocks on SCL
0x18
Remote ID
Remote ID
Configures the I2C Slave ID of the remote Serializer. A
value of 0 in this field disables I2C access to remote
Serializer. This field is automatically configured via the
Serializer Forward Channel. Software may overwrite
this value, but should also set the FREEZE DEVICE ID
bit to prevent overwriting by the Forward Channel.
Freeze
Device ID
Freeze Serializer Device ID
1: Prevent auto-loading of the Serializer Device ID from
the Forward Channel. The ID will be frozen at the value
written.
0: Update
0x00
Target
Slave
Device ID0
7-bit Remote Slave Device ID 0
Configures the physical I2C address of the remote I2C
Slave device attached to the remote Serializer. If an
I2C transaction is addressed to the Slave Alias ID0, the
transaction will be remapped to this address before
passing the transaction across the Bidirectional
Control Channel to the Serializer.
Reserved
Copyright © 1999-2012, Texas Instruments Incorporated
33