ak4564 AKM Semiconductor, Inc., ak4564 Datasheet - Page 28

• Manufacturer Part Number: ak4564
• Description: 16bit Codec With Built-in Alc And Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The following registers should not be changed during the ALC1 operation.
*2: When ALC1 bit changes into “0”, it takes a period set by ZTM1-0 bit to return manual mode.
MS0140-E-01
WTM1-0, ZTM1-0, LMTH1-0, LMAT1-0, RGAIN1-0, REF7-0, FR
WR (Power Management Control & Signal Select registers)
Finish ALC1 mode and return to manual mode
Figure 22. Registers set-up sequence at ALC1 operation
WR (LMAT1-0, RGAIN1-0, LMTH1-0)
No
WR (ZTM1-0, WTM1-0)
Finish ALC1 mode?
WR (ALC1= “1”)
WR (ALC1= “0”)
ALC1 Operation
WR (IVOL7-0)
WR (REF7-0)
Manual Mode
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Yes
*2
*1: The value of IVOL should be
the same or smaller than REF’s
[AK4564]
2002/07