AD4697 datasheet(64/107 Pages) AD

64 / 107 page

Data Sheet

AD4697/AD4698

DIGITAL INTERFACE

analog.com

Rev. 0 | 64 of 107

GENERAL-PURPOSE PINS

Table 25 shows the functions available on each of the general-

purpose pins on the LFCSP and WLCSP options of the AD4697/

AD4698, plus the relative priority of those functions (lower numbers

indicate higher priority). To configure the general-purpose pins for

a given function, all higher priority functions must be disabled. The

Busy Indicator section, Threshold Detection and Alert Indicators

section, Serial Data Output Modes section, and GPIO section

describe the behavior of the general-purpose pins when they are

configured for each function shown in Table 25.

The LFCSP options of the AD4697/AD4698 have one general-pur-

pose pin, BSY_ALT_GP0. The WLCSP option of the AD4698 has

four general-purpose pins: BSY_ALT_GP0, GP1, GP2, and GP3.

The BSY_ALT_GP0 pin on the LFCSP and the WLCSP options

have the same available functions, except that it is not used as the

SDO1 signal on the WLCSP (see Table 20 and Table 25).

When a general-purpose pin is configured for any function other

than a general-purpose input, it functions as a digital output. If

another device attempts to drive a general-purpose pin while it

is configured as a digital output, contention occurs and could

potentially damage the AD4697/AD4698. All AD4697/AD4698 gen-

eral-purpose pins are configured as digital inputs by default.

Table 25. General-Purpose Pin Functions and Function Priority

Package

Function Priority

1 (Highest Priority)

4 (Lowest Priority)

LFCSP

BSY_ALT_GP0

SDO1 signal (dual-SDO mode)

Alert indicator

Busy indicator

GPIO

WLCSP

BSY_ALT_GP0

Alert indicator

Busy indicator

GPIO

GP1

SDO1 (dual-SDO and quad-SDO mode)

GPIO

GP2

SDO2 (quad-SDO mode)

Alert indicator

GPIO

GP3

SDO3 (quad-SDO mode)

Busy indicator

GPIO

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