ADM1266ACPZ-R7 datasheet(53/62 Pages) AD

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Data Sheet

ADM1266

Rev. A | Page 53 of 62

GPIO_CONFIGURATION

This command block reads/writes the GPIO configuration.

Table 83. Register 0xE1—GPIO_CONFIGURATION (for Block RW)

Byte

Byte Name

R/W

Description

Parameter length

Block W

Parameter data length, fixed to 1.

GPIO index

parameter

Block W

GPIO index. Refer to Table 86.

Data length

Block R

The length of the GPIO configuration data that the ADM1266 returns, fixed to 2.

Data

Block R

Data for GPIO configuration.

Data

Block R

Reserved.

Table 84. Register 0xE1—GPIO_SYNC_CONFIGURATION (for Block W)

Byte

Bit Name

R/W

Description

Data length

Block W

Number of bytes of data for this block write. For a write, its value is fixed to 2.

Index

Block W

GPIO_SYNC index. Refer to Table 86.

Data

Block W

Data for GPIO configuration.

Table 85. Data for Each GPIO_SYNC Configuration

Bits

Bit Name

R/W

Description

[7:4]

Reserved

Reserved.

Out mode

R/W

0 is push/pull, 1 is open drain

Input enable

R/W

0 is disable, 1 is enable

Output enable

R/W

0 is disable, 1 is enable

[1:0]

GPIO functions

R/W

GPIO functions, 00 is high-Z, 11 is GPIO

Table 86 shows the mapping between the internal GPIO index and the external GPIOx pins.

Table 86. GPIO Mapping

External GPIOx_SYNC Pin

GPIO Index

GPIO1

GPIO2

GPIO3

GPIO4

GPIO5

GPIO6

GPIO7

GPIO8

GPIO9

SYNC

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