AK4561 Datasheet, PDF (44/48 Pages) Asahi Kasei Microsystems – 16bit CODEC with built-in ALC and MIC/HP-Amp

ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
During ALC operation, the following registers are inhibits.
• LTM1-0, LMTH, LMAT1-0, WTM1-0, ZTM1-0, RATT, REF6-0, ZELM
Manual-Mode
WR (Power Management Control & Signal Select registers)
WR (ZTM1-0, WTM1-0, LTM1-0)
WR (LMAT1-0, RATT, LMTH)
WR (REF6-0)
WR (IPGA6-0)
WR (ALC= “1”)
* The value of IPGA should be the
same or smaller than REF’s.
ALC Operation
No
Finish ALC mode?
Yes
WR (ALC= “0”)
RD (STAT)
No
STAT = “1”?
Yes
Finish ALC-Mode and become manual-Mode
Rev. 0.9
Figure 32. Registers set-up sequence at ALC operation
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2000/09