ML22Q563 datasheet(36/66 Pages) ETC2

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FEDL2257X-05

ML22Q573/ML2257X

5. PDWN command

command

The PDWN command is used to shift the ML22Q573/ML2257X from a command waiting state to the power

down state.

However, since every setting will be initialized after entering the power down state, initial settings

need to be set after power-up.

This command is invalid during playback.

To resume playback after the ML22Q573/ML2257X has shifted to the power down state, first input the PUP and

AMODE commands and then input the PLAY command.

CSB

Status

Command is being

processed

Power down

SCK

NCR

BUSYB

Awaiting command

•XTB

Oscillating

Oscillation

stopped

CBUSYB

(internal)

Oscillation stops after a lapse of command processing time after the PDWN command is input.

The regulator

stops operation after a lapse of command processing time after the PDWN command is input.

At this time, the

SPM output of the speaker amplifier goes into a Hi-Z state to prevent generation of pop noise.

Initial stauts at reset input and status during power down

The status of each output pin is as follows:

Analog output pin

State

VDDL

DGND

VDDR

DGND

SPM

Hi-Z

SPP

DGND

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