Rohm LAPIS Semiconductor ML22620, Manual

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FEDL22620-01
ML22620

AMODE command
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Command 0 0 0 0 0 1 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
0 Use Class AB amplifier for speaker amplifier output.
1 Use Class D amplifier for speaker amplifier output.
When using analog mixing from the AIN pin, set DAMP = "0" (Class AB amplifier is used).
HPF Description
0 No high-pass filter is used.
1 Use a high-pass filter with a cut-off frequency of 200Hz
FAD Description
0 Fade-out is not processed when inputting STOP command.
1 Fade out when inputting STOP command
The fade-out processing BUSYB signal becomes "L" and becomes "H" after processing is completed.
DAG1 DAG0 Description
0 0 Internal DAC signal input OFF
0 1 Internal DAC signal input ON (-6 dB)
1 0 Internal DAC signal input ON (0dB)
1 1 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
0 0 Analog input from the AIN pin OFF
0 1 Analog input from AIN pin ON (-6 dB)
1 0 Analog input from AIN pin ON (0dB)
1 1 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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