IO Wrap Register Map
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1098
SBAU337–May 2020
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Serial Interface Register Maps
Table 2-2597. Register 49B Field Descriptions
Bit Field Type Reset Description
3-1
ACTIV_BIR_DIR_C
TRL_GPIO_38
R/W 0h
Control to indicate whether the GPIO_38 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.
Unused as this is fixed IO
0-0 reserved R/W 0h
2.16.319 Register 49Ch (offset = 49Ch) [reset = 1h]
Figure 2-2582. Register 49Ch
7 6 5 4 3 2 1 0
reserved reserved BUF_DIR_CTRL_GPIO_39
R/W-0h R/W-0h R/W-1h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2598. Register 49C 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_39
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
2.16.320 Register 49Fh (offset = 49Fh) [reset = 0h]
Figure 2-2583. Register 49Fh
7 6 5 4 3 2 1 0
ACTIV_BIR_DIR_CTRL_GPIO_39 reserved
R/W-0h R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2599. Register 49F Field Descriptions
Bit Field Type Reset Description
3-1
ACTIV_BIR_DIR_C
TRL_GPIO_39
R/W 0h
Control to indicate whether the GPIO_39 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
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