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AD7147

Data Sheet

Rev. D | Page 32 of 72

GPIO

INPUT

GPIO

INPUT

GPIO INPUT LOW WHEN REGISTER IS READ BACK

GPIO INPUT HIGH WHEN REGISTER IS READ BACK

1READ GPIO_INT_STATUS BIT TO RESET INT OUTPUT.

INT

OUTPUT

INT

OUTPUT

SERIAL

READBACK

Figure 45. Example of INT Output Controlled by the GPIO Input

(GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 10)

GPIO

INPUT

SERIAL

READBACK

GPIO

INPUT

GPIO INPUT LOW WHEN REGISTER IS READ BACK

GPIO INPUT HIGH WHEN REGISTER IS READ BACK

NOTES

1READ GPIO_INT_STATUS BIT TO RESET INT OUTPUT.

INT

OUTPUT

INT

OUTPUT

Figure 46. Example of INT Output Controlled by the GPIO Input

(GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 11)

Table 15. GPIO Interrupt Behavior

GPIO_INPUT_CONFIG

GPIO Pin

GPIO_INT_STATUS

INT

INT Behavior

00 = Negative Level Triggered

Not triggered

00 = Negative Level Triggered

Asserted while signal on GPIO pin is low

01 = Positive Edge Triggered

Pulses low at low-to-high GPIO transition

01 = Positive Edge Triggered

Not triggered

10 = Negative Edge Triggered

Pulses low at high-to-low GPIO transition

10 = Negative Edge Triggered

Not triggered

11 = Positive Level Triggered

Asserted while signal on GPIO pin is high

11 = Positive Level Triggered

Not triggered

AD7147 Datasheet(PDF) 33 Page - Analog Devices

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