DS90UB964-Q1 Datasheet, PDF (73/116 Pages) Texas Instruments – DS90UB964-Q1 Quad FPD-Link III Deserializer Hub

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DS90UB964-Q1
SNLS500 – JULY 2016
Register Maps (continued)
Table 12. Serial Control Bus Registers (continued)
Page Addr Register Name
(hex)
RX 0x4D RX_PORT_STS1
Bit(s) Field
Type Default Description
5:4 RX_READ_PORT RW
0x0
Port#
Select RX port for register read
This field selects one of the four RX port
register blocks for readback. This applies to all
paged FPD3 Receiver port registers.
00: Port 0 registers
01: Port 1 registers
10: Port 2 registers
11: Port 3 registers
When accessed via local I2C interfaces, the
default setting is 0. When accessed via Bi-
directional Control Channel, the default value
is the port number of the Receive port
connection.
3
RX_WRITE_PORT_3 RW
0
Write Enable for RX port 3 registers
1 for This bit enables writes to RX port 3 registers.
RX Port Any combination of RX port registers can be
3
written simultaneously. This applies to all
paged FPD3 Receiver port registers.
0: Writes disabled
1: Writes enabled
When accessed via Bi-directional Control
Channel, the default value is 1 if accessed
over RX port 3.
2
RX_WRITE_PORT_2 RW
0
Write Enable for RX port 2 registers
1 for This bit enables writes to RX port 2 registers.
RX Port Any combination of RX port registers can be
2
written simultaneously. This applies to all
paged FPD3 Receiver port registers.
0: Writes disabled
1: Writes enabled
When accessed via Bi-directional Control
Channel, the default value is 1 if accessed
over RX port 2.
1
RX_WRITE_PORT_1 RW
0
Write Enable for RX port 1 registers
1 for This bit enables writes to RX port 1 registers.
RX Port Any combination of RX port registers can be
1
written simultaneously. This applies to all
paged FPD3 Receiver port registers.
0: Writes disabled
1: Writes enabled
When accessed via Bi-directional Control
Channel, the default value is 1 if accessed
over RX port 1.
0
RX_WRITE_PORT_0 RW
0
Write Enable for RX port 0 registers
1 for This bit enables writes to RX port 0 registers.
RX Port Any combination of RX port registers can be
0
written simultaneously. This applies to all
paged FPD3 Receiver port registers.
0: Writes disabled
1: Writes enabled
When accessed via Bi-directional Control
Channel, the default value is 1 if accessed
over RX port 0.
7:6 RX_PORT_NUM
R
0x0
RX Port Number
This read-only field indicates the number of the
currently selected RX read port.
5
BCC_CRC_ERROR R/COR 0
Bi-directional Control Channel CRC Error
Detected
This bit indicates a CRC error has been
detected in the forward control channel. If this
bit is set, an error may have occurred in the
control channel operation. This bit is cleared
on read.
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