ML22Q533 datasheet(108/178 Pages) ROHM

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FEDL22Q53X-02

ML22Q53X

 AMODE command

・ Command

DAMP

HPF

1st byte

FAD

DAG1

DAG0

AIG1

AIG0

AEN1

AEN0

POP

2nd byte

The AMODE command sets the analog part.

The AMODE command is ignored during power-down, power-up transition, power-down transition and playback sound.

When the PDWN command is input while powering up the analog parts, the LSI power downs on the setting condition when

powering up the analog parts by the AMODE command. To perform power-down under a setting condition that differs from

the power-up condition of the analog unit, set the AMODE command to set the power-down condition again.

To power up the analog part, set the CVOL command to 00h (initial value) and then enter the AMODE command.

The settings are initialized when the reset is released or when the PDWN command is inputted.

Each setting is as follows.

DAMP

Description

Use Class AB amplifier for speaker amplifier output.

Use Class D amplifier for speaker amplifier output.

When using line amplifier and using analog mixing from the AIN pin, set DAMP = "0" (Class AB amplifier is used).

In this LSI, select DAMP = "0" (Class AB amplifier is used).

HPF

Description

No high-pass filter is used.

Use a high-pass filter with a cut-off frequency of 200Hz

FAD

Description

Fade-out is not processed when inputting STOP command.

Fade out when inputting STOP command

The fade-out processing BUSYB signal becomes "L" and becomes "H" after processing is completed.

DAG1

DAG0

Description

Internal DAC signal input OFF

Internal DAC signal input ON (-6 dB)

Internal DAC signal input ON (0dB)

Internal DAC signal input ON (0dB) (setting prohibited)

The setting is enabled in the speaker amplifier output mode when using Class AB amplifier.

Refer to the "Volume Settings" in the "Function description".

AIG1

AIG0

Description

Analog input from the AIN pin OFF

Analog input from AIN pin ON (-6 dB)

Analog input from AIN pin ON (0dB)

Analog input from AIN pin ON (0dB) (setting prohibited)

Input the sound signals to the AIN pin after CBUSYB pin becomes "H" by the AMODE command.

The setting is enabled in the speaker amplifier output mode only when using Class AB amplifier.

Refer to the "Volume Settings" in the "Function description".

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