AD7142 datasheet(28/68 Pages) AD

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AD7142

Rev. 0 | Page 28 of 68

GPIO

INPUT

INT

OUTPUT

SERIAL

READBACK

GPIO

INPUT

INT

OUTPUT

GPIO INPUT LOW WHEN REGISTER IS READBACK

GPIO INPUT HIGH WHEN REGISTER IS READBACK

NOTES

1. READ GPIO_STATUS REGISTER TO RESET INT OUTPUT.

Figure 40. INT Output Controlled by the GPIO Input Example,

GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 10

GPIO

INPUT

INT

OUTPUT

SERIAL

READBACK

GPIO

INPUT

INT

OUTPUT

GPIO INPUT LOW WHEN REGISTER IS READBACK

GPIO INPUT HIGH WHEN REGISTER IS READBACK

NOTES

1. READ GPIO_STATUS REGISTER TO RESET INT OUTPUT.

Figure 41. INT Output Controlled by the GPIO Input Example,

GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 11

Table 14. GPIO Interrupt Behavior

GPIO_INPUT_CONFIG

GPIO Pin

GPIO_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

AD7142 Datasheet(PDF) 28 Page - Analog Devices

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