ADP1032ACPZ-3-R7 datasheet(28/37 Pages) AD

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ADP1032

Data Sheet

Rev. 0 | Page 28 of 37

GPIO Data Channels

The general-purpose data channels are provided as space saving

isolated datapaths where timing is not critical. The dc value of

all low speed general-purpose inputs, on a given side of the device,

are sampled simultaneously, packetized, and shifted across a single

isolation coil. The process is then reversed by reading the inputs

on the opposite side of the device, packetizing the inputs and

sending these inputs back for similar processing. Because of the

sampled nature of this process, the general-purpose data channels

exhibit a sampling uncertainty that resembles 19.5 µs peak jitter.

For proper operation of the GPIO channels, refer to Table 15.

Power both the MVDD pin and SVDD2 pin within the specified

input voltage range for these pins.

Table 15. Truth Table for GPIO Channels

MVDD State

SVDD2 State

xGPIx

MGPOx

SGPOx

Test Conditions/Comments

Unpowered

Powered

Don’t care

Low

During startup

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Unpowered

Don’t care

Low

During startup

Powered

High

Normal operation

Powered

Low

Normal operation

Powered

Powered to Unpowered

Don’t care

Hold1

Low

Powered to Unpowered

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Don’t care

Low

Hold1

Hold means that the current state of the outputs are preserved.

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