UPD9971 datasheet(63/112 Pages) RENESAS

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µPD9971

Data Sheet S17455EJ2V0DS

6.10 Setting of General-Purpose Output Pins (POUT)

This register performs setting for POUT.

Address: 0EH, register name: POUT, block: PO, access: R/W, initial value: 00H

POUT3

POUT2

POUT1

POUT0

6.10.1 POUT0 to POUT3

Data

Mode

Initial Value

Description

LOW

Performs low-level output from the corresponding pin from PO0 to

PO3.

HIGH

Performs high-level output from the corresponding pin from PO0 to

PO3.

Remark

While STADIG is set to standby mode, the POUT output retains the data value.

6.11 Audio Soft Mute Control (SMUTE)

This register controls soft mute.

Address: 10H, register name: SMUTE, block: Audio , access: R/W, initial value: 00h

SLOPE[1:0]

AUSMUTE

MELSMUTE

6.11.1 SLOPE[1:0]

Data

Mode

Initial Value

Description

00b

8 ms

Sets soft mute cancel time at 8 ms (from

−63 dB to 0 dB).

01b

16 ms

Sets soft mute cancel time at 16 ms (from

−63 dB to 0 dB).

10b

24 ms

Sets soft mute cancel time at 24 ms (from

−63 dB to 0 dB).

11b

32 ms

00b

Sets soft mute cancel time at 32 ms (from

−63 dB to 0 dB).

6.11.2 AUSMUTE

Data

Mode

Initial Value

Description

OFF

Soft mute control is not provided for ASIO input data.

Soft mute control is provided for ASIO input data.

6.11.3 MELSMUTE

Data

Mode

Initial Value

Description

OFF

Soft mute control is not provided for sound generator output.

Soft mute control is provided for sound generator output.

UPD9971 Datasheet(PDF) 63 Page - Renesas Technology Corp

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