JESD_SUBCHIP Register Map
164
SBAU337 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Serial Interface Register Maps
2.3.6 Register 27h (offset = 27h) [reset = FFh]
Figure 2-47. Register 27h
7
6
5
4
3
2
1
0
SERDESCD_TXBCLK_ENA
SERDESAB_TXBCLK_ENA
R/W-Fh
R/W-Fh
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-50. Register 27 Field Descriptions
Bit
Field
Type
Reset
Description
7-4
SERDESCD_TXBC
LK_ENA
R/W
Fh
register to enable SerdesCD STX5, STX6, STX7 and STX8
txbclks (0 -disable, 1 - enable)
[3] = STX8 txbclk enable
[2] = STX7 txbclk enable
[1] = STX6 txbclk enable
[0] = STX5 txbclk enable
3-0
SERDESAB_TXBC
LK_ENA
R/W
Fh
register to enable SerdesAB STX1, STX2, STX3 and STX4
txbclks (0 -disable, 1 - enable)
[3] = STX4 txbclk enable
[2] = STX3 txbclk enable
[1] = STX2 txbclk enable
[0] = STX1 txbclk enable
2.3.7 Register 29h (offset = 29h) [reset = 3h]
Figure 2-48. Register 29h
7
6
5
4
3
2
1
0
DUAL_2T2R1F
_MODE_CD
DUAL_2T2R1F
_MODE_AB
R/W-1h
R/W-1h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-51. Register 29 Field Descriptions
Bit
Field
Type
Reset
Description
1-1
DUAL_2T2R1F_M
ODE_CD
R/W
1h
Used for 2r1f_cd instance
Default mode is dual 2r1f modes.
For RX L1 and M16 cases (or) FB M4, make this bit 0.
Recommended to use LATTE to configure this register as the
correct values and the sequence depends on the mode of
usage.
0-0
DUAL_2T2R1F_M
ODE_AB
R/W
1h
Used for 2r1f_ab instance
Default mode is dual 2r1f modes.
For RX L1 and M16 cases (or) FB M4, make this bit 0.
Recommended to use LATTE to configure this register as the
correct values and the sequence depends on the mode of
usage.
2.3.8 Register 2Ah (offset = 2Ah) [reset = 0h]
Figure 2-49. Register 2Ah
7
6
5
4
3
2
1
0
DDC_RD_CLK
_FBCD_FBAB_
CLK_SYSREF_
MUX
DDC_RD_CLK
_RXD_RXB_CL
K_SYSREF_M
UX
DDC_RD_CLK
_RXC_RXA_CL
K_SYSREF_M
UX
R/W-0h
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset