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AD7292

Data Sheet

Digital Output Driver Subregister (Address 0x01)

The 16-bit digital output driver subregister enables the output

drivers of the digital I/O pins. Setting Bits[D11:D0] to 1 enables

the corresponding digital I/O output driver. Six of the 12 digital

I/O pins offer mixed functionality (see Table 18). When a digital

I/O pin is configured as a GPIO pin and its output is enabled, its

value is controlled by the GPIO register (see the GPIO Register

(Address 0x0B) section).

Digital I/O Function Subregister (Address 0x02)

Six of the 12 GPIO pins offer dual functionality. To enable

standard GPIO functionality, write a 1 to the corresponding

bit in the 16-bit digital I/O subregister. To enable the alternative

functionality, write a 0 to the appropriate bit (see Table 18). For

example, to configure the GPIO6/BUSY pin as an ADC busy pin,

write a 0 to Bit D6 of Address 0x02.

Table 17. Digital Output Driver Subregister, Bit Function Descriptions

Bits

Bit Name

R/W

Description

[D15:D12]

Reserved

R/W

Reserved

D11

GPIO11 output

R/W

0 = disable GPIO11 output driver; 1 = enable GPIO11 output driver

D10

GPIO10 output

R/W

0 = disable GPIO10 output driver; 1 = enable GPIO10 output driver

GPIO9 output

R/W

0 = disable GPIO9 output driver; 1 = enable GPIO9 output driver

GPIO8 output

R/W

0 = disable GPIO8 output driver; 1 = enable GPIO8 output driver

GPIO7 output

R/W

0 = disable GPIO7 output driver; 1 = enable GPIO7 output driver

GPIO6 output

R/W

0 = disable GPIO6 output driver; 1 = enable GPIO6/BUSY output driver

GPIO5 output

R/W

0 = disable GPIO5 output driver; 1 = enable GPIO5 output driver

GPIO4 output

R/W

0 = disable GPIO4 output driver; 1 = enable GPIO4/DAC DISABLE1 output driver

GPIO3 output

R/W

0 = disable GPIO3 output driver; 1 = enable GPIO3/LDAC output driver

GPIO2 output

R/W

0 = disable GPIO2 output driver; 1 = enable GPIO4/DAC DISABLE0 output driver

GPIO1 output

R/W

0 = disable GPIO1 output driver; 1 = enable GPIO1/ALERT1 output driver

GPIO0 output

R/W

0 = disable GPIO0 output driver; 1 = enable GPIO1/ALERT0 output driver

Table 18. Digital I/O Function Subregister, Bit Function Descriptions

Bits

Bit Name

R/W

Description

[D15:D12]

Reserved

R/W

Reserved

D11

GPIO11

R/W

0 = reserved

1 = enable the GPIO11 function

D10

GPIO10

R/W

0 = reserved

1 = enable the GPIO10 function

GPIO9

R/W

0 = reserved

1 = enable the GPIO9 function

GPIO8

R/W

0 = reserved

1 = enable the GPIO8 function

GPIO7

R/W

0 = reserved

1 = enable the GPIO7 function

GPIO6/BUSY

R/W

0 = enable the ADC busy output function

1 = enable the GPIO6 function

GPIO5

R/W

0 = reserved

1 = enable the GPIO5 function

GPIO4/DAC DISABLE1

R/W

0 = enable the DAC DISABLE1 input function

1 = enable the GPIO4 function

GPIO3/LDAC

R/W

0 = enable the LDAC input function

1 = enable the GPIO3 function

GPIO2/DAC DISABLE0

R/W

0 = enable the DAC DISABLE0 input function

1 = enable the GPIO2 function

GPIO1/ALERT1

R/W

0 = enable the ALERT1 output function

1 = enable the GPIO1 function

GPIO0/ALERT0

R/W

0 = enable the ALERT0 output function

1 = enable the GPIO0 function

Rev. A | Page 22 of 40

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