CS5378 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS5378

Low-power Single-channel Decimation Filter

Cirrus Logic 

CS5378

19.5.1 GPIO Reads in Output Mode

When reading GPIO pins the GP_DATA register

value always reports the current state of the pins, so

a value written in output mode does not necessarily

read back the same value. If a pin in output mode is

written as a logical 1, the CS5378 attempts to drive

the pin high. If an external device forces the pin

low, the read value reflects the pin state and returns

a logical 0. Similarly, if an output pin is written as

a logical 0 but forced high externally, the read val-

ue reflects the pin state and returns a logical 1. In

both cases the CS5378 is in contention with the ex-

ternal device resulting in increased power con-

sumption.

DS639F2

65

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