ML22Q563 datasheet(30/66 Pages) ETC2

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FEDL2257X-05

ML22Q573/ML2257X

2. AMODE command

command

HPF1

HPF0

1st byte

DAG1

DAG0

AIG1 AIG0

DAEN

SPEN

POP

2nd byte

The AMODE command is used to configure various settings for the analog section.

If the PDWN command is input while the analog section is in the power-up state, the analog section enters a

power down state under the setting conditions that were in effect when the analog section was powered up by the

AMODE command.

To perform a power-down operation using different conditions from those used at analog

section power-up, set settings by the AMODE command.

To change the setting of DAEN/SPEN while the analog section is in the power-up state, first put the analog

section into the power-down state and then put the analog section into the power-up state again by the AMODE

command.

The detailed command settings are shown below.

Each setting is initialized upon reset release or by the PUP command.

Don’t input the STOP command during the AMODE command is being proccessed (CBUSYB=”L”).

Input the AMODE command for analog section into the power-down state before the PDWN command is input.

The HPF1/HPF0 bits set the cut-off frequency of the HPF.

HPF1

HPF0

Cut-off frequency

Off (initial value)

200 Hz

300 Hz

400 Hz

The POP bit specifies whether to suppress generation of “pop” noise.

- If the bit is “0” (no pop noise suppression) and the DAEN bit is “1”, the LINE output rises from the DGND

level to the SG level in about 35 ms, at which time the analog section enters the power-up state.

If the DAEN

bit is “0”, the LINE output falls from the SG level to the DGND level in about 110 ms, at which time the

analog section enters the power down state.

- If the bit is “1” (with pop noise suppression) and the DAEN bit is “1”, the LINE output rises from the DGND

level to the SG level in about 90 ms, at which time the analog section enters the power-up state.

If the DAEN

bit is “0”, the LINE output falls from the SG level to the DGND level in about 140 ms, at which time the

analog section enters the power down state.

POP

Pop noise suppression

No (initial value)

Yes

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