AD7779 Datasheet, PDF (72/97 Pages) Analog Devices – 8-Channel, 24-Bit, Simultaneous Sampling ADC

AD7779
GPIO CONFIGURATION REGISTER
Address: 0x017, Reset: 0x00, Name: GPIO_CONFIG
76543210
00000000
[7:3] RESERVED
[2:0] GPIO_OP_EN (R/W)
GPIO input/output
Table 67. Bit Descriptions for GPIO_CONFIG
Bits Bit Name
Settings Description
[7:3] RESERVED
Reserved.
[2:0] GPIO_OP_EN
GPIO Input/Output
GPIO DATA REGISTER
Address: 0x018, Reset: 0x00, Name: GPIO_DATA
76543210
00000000
[7:6] RESERVED
[5:3] GPIO_READ_DATA (R)
Data read from GPIO pins
[2:0] GPIO_WRITE_DATA (R/W)
Value sent to GPIO pins
Table 68. Bit Descriptions for GPIO_DATA
Bits Bit Name
Settings Description
[7:6] RESERVED
Reserved.
[5:3] GPIO_READ_DATA
[2:0] GPIO_WRITE_DATA
Data Read from the GPIO Pins
Value Sent to the GPIO Pins
BUFFER CONFIGURATION 1 REGISTER
Address: 0x019, Reset: 0x38, Name: BUFFER_CONFIG_1
76543210
00011000
[7] RESERVED
[6] RESERVED
[5] RESERVED
[4] REF_BUF_POS_EN (R/W)
Reference buffer pos itive enable
[0] RESERVED
[1] RESERVED
[2] RESERVED
[3] REF_BUF_NEG_EN (R/W)
Reference buffer negative enable
Table 69. Bit Descriptions for BUFFER_CONFIG_1
Bits Bit Name
Settings Description
[7:5] RESERVED
Reserved
4
REF_BUF_POS_EN
Reference Buffer Positive Enable
3
REF_BUF_NEG_EN
Reference Buffer Negative Enable
[2:0] RESERVED
Reserved
Data Sheet
Reset
0x0
0x0
Access
R/W
R/W
Reset
0x0
0x0
0x0
Access
R/W
R
R/W
Reset
0x0
0x1
0x1
0x0
Access
R/W
R/W
R/W
R/W
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