DS90UB964-Q1 Datasheet, PDF (86/116 Pages) Texas Instruments – DS90UB964-Q1 Quad FPD-Link III Deserializer Hub

DS90UB964-Q1
SNLS500 – JULY 2016
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Register Maps (continued)
Page Addr Register Name
(hex)
RX 0xD0 PORT_DEBUG
RX 0xD2 AEQ TEST
Table 12. Serial Control Bus Registers (continued)
Bit(s) Field
Type Default Description
4
GPIO4_PD_DIS
RW
0
GPIO4 Pull-down Resistor Disable:
The GPIO pins by default include a pulldown
resistor that is automatically enabled when the
GPIO is not in an output mode. When this bit is
set, the pulldown resistor will also be disabled
when the GPIO pin is in an input only mode.
1 : Disable GPIO pull-down resistor
0 : Enable GPIO pull-down resistor
3
GPIO3_PD_DIS
RW
0
GPIO3 Pull-down Resistor Disable:
The GPIO pins by default include a pulldown
resistor that is automatically enabled when the
GPIO is not in an output mode. When this bit is
set, the pulldown resistor will also be disabled
when the GPIO pin is in an input only mode.
1 : Disable GPIO pull-down resistor
0 : Enable GPIO pull-down resistor
2
GPIO2_PD_DIS
RW
0
GPIO2 Pull-down Resistor Disable:
The GPIO pins by default include a pulldown
resistor that is automatically enabled when the
GPIO is not in an output mode. When this bit is
set, the pulldown resistor will also be disabled
when the GPIO pin is in an input only mode.
1 : Disable GPIO pull-down resistor
0 : Enable GPIO pull-down resistor
1
GPIO1_PD_DIS
RW
0
GPIO1 Pull-down Resistor Disable:
The GPIO pins by default include a pulldown
resistor that is automatically enabled when the
GPIO is not in an output mode. When this bit is
set, the pulldown resistor will also be disabled
when the GPIO pin is in an input only mode.
1 : Disable GPIO pull-down resistor
0 : Enable GPIO pull-down resistor
0
GPIO0_PD_DIS
RW
0
GPIO0 Pull-down Resistor Disable:
The GPIO pins by default include a pulldown
resistor that is automatically enabled when the
GPIO is not in an output mode. When this bit is
set, the pulldown resistor will also be disabled
when the GPIO pin is in an input only mode.
1 : Disable GPIO pull-down resistor
0 : Enable GPIO pull-down resistor
7
RESERVED
R
0
Reserved
6
RESERVED
RW
0
Reserved
5
SER_BIST_ACT
R
0
Serializer BIST active
This register indicates the Serializer is in BIST
mode. If the Deserializer is not in BIST mode,
this could indicate an error condition.
4:0 RESERVED
RW
0x0
Reserved
7:5 ADAPTIVE_EQ_REL RW
0x4
Time to wait for lock before incrementing the
OCK_TIME
EQ to next setting
000 : 164 us
001 : 328 us
010 : 655 us
011 : 1.31 ms
100 : 2.62 ms
101 : 5.24 ms
110 : 10.5ms
111 : 21.0 ms
86
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