ak4640 ETC-unknow, ak4640 Datasheet - Page 72

• Manufacturer Part Number: ak4640
• Description: 16bit Codec With /hp/spk-ampl
• Manufacturer: ETC-unknow

ASAHI KASEI
Power down VCOM(PMVCM= “1” → “0”) after all blocks except VCOM are powered down and MCKI stops. The
AK4640 is also powered-down by PDN pin = “L”. When PDN pin = “L”, the registers are initialized.
MS0273-E-00
Power down
3. External clock mode
<Example>
(1) Pull down the XTI pin : MCKPD = “0” → “1”
(2) Stop an external MCKI
E xtern al M C L K
When the external MCKI becomes Hi-Z or the external MCKI is input by AC couple, MCKI pin should be
pulled down.
(A d d r:0 1 H , D 7 )
M C K P D b it
In p u t
Figure 55. Stop of Clock Sequence(3)
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E x a m p le :
(1 ) A d d r:0 1 H , D a ta :8 0 H
(2 ) S to p e x te rn a l c lo c k
[AK4640]
2004/03