AK4635 datasheet(70/81 Pages) AKM

70 / 81 page

[AK4635]

Rev. 0.6

2007/10

- 70 -

Addr

07H

ALC Mode Control 1

LFST

ALC2

ALC1

ZELMN

LMAT1

LMAT0

RGAIN0

LMTH0

R/W

Default

LMTH1-0: ALC Limiter Detection Level / Recovery Waiting Counter Reset Level (Table 25)

LMTH1 bit is located at D6 bit of 0BH. Default: “01”

RGAIN1-0: ALC Recovery GAIN Step (Table 29)

RGAIN1 bit is located at D7 bit of 0BH. Default: “00”

LMAT1-0: ALC Limiter ATT Step (Table 26)

Default: “00”

ZELMN: Zero crossing detection enable at ALC Limiter operation

0: Enable (default)

1: Disable

ALC1: ALC of recoding path Enable

0: Disable (default)

1: Enable

ALC2: ALC2 of playback path Enable

0: Disable (default)

1: Enable

LFST: Limiter function of ALC when the output was bigger than Fs.

0: The volume value is changed at zero crossing or timeout. (default)

1: When output of ALC is bigger than FS, VOL value is changed instantly.

Addr

08H

ALC Mode Control 2

IREF7

IREF6

IREF5

IREF4

IREF3

IREF2

IREF1

IREF0

R/W

Default

IREF7-0: Reference value at ALC Recovery operation for recoding. (0.375dB step, 242 Level) (Table 30)

Default: “C5H” (+19.5dB)

AK4635 Datasheet(PDF) 70 Page - Asahi Kasei Microsystems

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