IO Wrap Register Map
1129
SBAU337 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Serial Interface Register Maps
2.16.396 Register 537h (offset = 537h) [reset = 0h]
Figure 2-2659. Register 537h
7
6
5
4
3
2
1
0
ACTIV_BIR_DIR_CTRL_GPIO_77
reserved
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2675. Register 537 Field Descriptions
Bit
Field
Type
Reset
Description
3-1
ACTIV_BIR_DIR_C
TRL_GPIO_77
R/W
0h
Control to indicate whether the GPIO_77 needs dynamic
ouptu t enabling.
0 to 3 --> Static direction
4 --> Use the IO for 3 pin SPI B2 SDIO.
5 --> Use the IO for 4 pin SPI B2 SDO
6 --> Use the IO for 3 pin SPI B1 SDIO.
7 --> use the IO for 4 pin SPI B1 SDO.
0-0
reserved
R/W
0h
2.16.397 Register 538h (offset = 538h) [reset = 1h]
Figure 2-2660. Register 538h
7
6
5
4
3
2
1
0
reserved
reserved
BUF_DIR_CTRL_GPIO_78
R/W-0h
R/W-0h
R/W-1h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2676. Register 538 Field Descriptions
Bit
Field
Type
Reset
Description
7-5
reserved
R/W
0h
4-2
reserved
R/W
0h
1-0
BUF_DIR_CTRL_G
PIO_78
R/W
1h
Controls the direction of GPIO
0 both input and output are not selected.. can be used for
analog
1 input mode
2 output mode
3 shouldnt be used
2.16.398 Register 53Bh (offset = 53Bh) [reset = 0h]
Figure 2-2661. Register 53Bh
7
6
5
4
3
2
1
0
ACTIV_BIR_DIR_CTRL_GPIO_78
reserved
R/W-0h
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset