DS90UB913A-Q1 Datasheet, PDF (32/51 Pages) Texas Instruments – 25-MHz to 100-MHz 10/12-Bit FPD-Link III Serializer

DS90UB913A-Q1
SNLS443C – MAY 2013 – REVISED APRIL 2016
www.ti.com
Register Maps (continued)
Table 6. DS90UB913A-Q1 Control Registers⁽¹⁾ (continued)
Addr
(Hex)
Name
Bits Field
R/W
7
GPO3 Output
Value
RW
6
GPO3 Remote
Enable
RW
5 GPO3 Direction
RW
GPO[2]
4 GPO3 Enable
RW
0x0E
and GPO[3]
Configuration
3
GPO2 Output
Value
RW
2
GPO2 Remote
Enable
RW
1 RSVD
0 GPO2 Enable
RW
7:5 RSVD
4:3
SDA Output
Delay
RW
2
Local Write
Disable
RW
0x0F
I2C Master
Config
1
I2C Bus Timer
Speed up
RW
0
I2C Bus Timer
Disable
RW
Default
0
0
1
1
0
1
1
00
0
0
0
Description
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 needs to be an output, and the value is
received from the remote Deserializer.
0: Disable GPIO control from remote Deserializer.
1: Input.
0: Output.
1: GPIO enable.
0: Tri-state.
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 needs to be an output, and the value is
received from the remote Deserializer.
0: Disable GPIO control from remote Deserializer.
Reserved.
1: GPIO enable.
0: Tri-state.
Reserved.
SDA Output Delay This field configures output delay
on the SDA output. Setting this value will increase
output delay in units of 50ns. Nominal output delay
values for SCL to SDA are:
00: ~350 ns
01: ~400 ns
10: ~450 ns
11: ~500 ns
Disable Remote Writes to Local Registers Setting this
bit to a 1 will prevent remote writes to local device
registers from across the control channel. This
prevents writes to the Serializer registers from an I2C
master attached to the Deserializer. Setting this bit
does not affect remote access to I2C slaves at the
Serializer.
Speed up I2C Bus Watchdog Timer.
1: Watchdog Timer expires after approximately 50
microseconds.
0: Watchdog Timer expires after approximately 1
second.
1. Disable I2C Bus Watchdog Timer When the I2C
Watchdog 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 signaling
occurs for approximately 1 second, the I2C bus will
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.
0: No effect.
32
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