SERDES Register Map
517
SBAU337 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Serial Interface Register Maps
Table 2-878. Register 701E Field Descriptions (continued)
Bit
Field
Type
Reset
Description
2-2
OPTICAL_MODE
R/W
0h
Optical mode
1h All CTLE are fixed to 7.
0h Normal CTLE search algorithm is applicable.
1-1
PLL_CALIBR_DON
E
R
0h
PLL calibration
1h PLL calibration is done.
0h PLL calibration is not done.
0-0
PLL_CALIBR_RES
TART
R/W
0h
PLL calibration restart
Write 1 to this bit to restart PLL calibration on next PHY link
up. This bit is self-cleaning.
2.6.159 Register 7020h (offset = 7020h) [reset = 0h]
Figure 2-873. Register 7020h
7
6
5
4
3
2
1
0
FIRMWARE_WATCHDOG[7:0]
R-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-879. Register 7020 Field Descriptions
Bit
Field
Type
Reset
Description
7-0
FIRMWARE_WAT
CHDOG[7:0]
R
0h
Contents increment by a count of 1 approximately every
second. Use to verify that firmware is operating.
2.6.160 Register 7021h (offset = 7021h) [reset = 0h]
Figure 2-874. Register 7021h
7
6
5
4
3
2
1
0
FIRMWARE_WATCHDOG[15:8]
R-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-880. Register 7021 Field Descriptions
Bit
Field
Type
Reset
Description
7-0
FIRMWARE_WAT
CHDOG[15:8]
R
0h
Contents increment by a count of 1 approximately every
second. Use to verify that firmware is operating.
2.6.161 Register 7022h (offset = 7022h) [reset = 0h]
Figure 2-875. Register 7022h
7
6
5
4
3
2
1
0
CTLE_SEARC
H_DISABLE_L
N3
CTLE_SEARC
H_DISABLE_L
N2
CTLE_SEARC
H_DISABLE_L
N1
CTLE_SEARC
H_DISABLE_L
N0
R/W-0h
R/W-0h
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset