Texas Instruments AFE79 Series - 2.16.301 Register 478 h (offset = 478 h) [reset = 1 h]; 2.16.302 Register 47 Bh (offset = 47 Bh) [reset = 0 h]; 2.16.303 Register 47 Ch (offset = 47 Ch) [reset = 1 h]

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Serial Interface Register Maps
2.16.301 Register 478h (offset = 478h) [reset = 1h]
Figure 2-2564. Register 478h
7 6 5 4 3 2 1 0
reserved reserved BUF_DIR_CTRL_GPIO_30
R/W-0h R/W-0h R/W-1h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2580. Register 478 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_30
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
Unused as this is fixed IO
2.16.302 Register 47Bh (offset = 47Bh) [reset = 0h]
Figure 2-2565. Register 47Bh
7 6 5 4 3 2 1 0
ACTIV_BIR_DIR_CTRL_GPIO_30 reserved
R/W-0h R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2581. Register 47B Field Descriptions
Bit Field Type Reset Description
3-1
ACTIV_BIR_DIR_C
TRL_GPIO_30
R/W 0h
Control to indicate whether the GPIO_30
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
2.16.303 Register 47Ch (offset = 47Ch) [reset = 1h]
Figure 2-2566. Register 47Ch
7 6 5 4 3 2 1 0
reserved reserved BUF_DIR_CTRL_GPIO_31
R/W-0h R/W-0h R/W-1h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2582. Register 47C Field Descriptions
Bit Field Type Reset Description
7-5 reserved R/W 0h
4-2 reserved R/W 0h