ak4640 ETC-unknow, ak4640 Datasheet - Page 71

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

ASAHI KASEI
MCKI can be stopped when PMMIC=PMADC=PMDAC=PMSPK= “0”.
MS0273-E-00
External MCLK
Stop of Clock
1. When X’tal is used in PLL mode
<Example>
2. When an external clock is used in PLL mode
<Example>
(Addr:03H, D4)
(Addr:01H, D6)
(Addr:01H, D5)
(Addr:01H, D7)
(Addr:03H, D4)
(Addr:01H, D5)
(Addr:01H, D7)
MCKPD bit
MCKPD bit
PMXTL bit
PMPLL bit
PMPLL bit
MCKO bit
MCKO bit
(1) Disable MCKO output : MCKO bit = “1” → “0”
(2) Power down X’tal and PLL, Pull down the XTI pin :
(1) Stop MCKO output : MCKO bit = “1” → “0”
(2) Power down PLL, Pull down the XTI pin : PMPLL bit = “1” → “0”, MCKPD = “0” → “1”
(3) Stop an external MCKI
When the external MCKI becomes Hi-Z or the external MCKI is input by AC couple, MCKI pin should be
pulled down.
Input
(1)
(1)
(2)
(2)
PMXTL bit = PMPLL bit = “1” → “0”, MCKPD = “0” → “1”
(3)
Figure 53. Stop of Clock Sequence(1)
Figure 54. Stop of Clock Sequence(2)
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E x a m p le :
E x a m p le :
A u d io I/F : I
B IC K fre q u e n c y a t M a s te r M o d e : 6 4 fs
In p u t M a s te r C lo c k S e le c t a t P L L M o d e : 1 1 .2 8 9 6 M H z
O u tp u t M a s te r C lo c k F re q u e n c y : 6 4 fs
A u d io I/F F o rm a t : I
B IC K fre q u e n c y a t M a s te r M o d e : 6 4 fs
In p u t M a s te r C loc k S e lec t a t P L L M o d e : 1 1 .2 8 9 6 M H z
O u tp u t M a s te r C loc k F re q u e n c y : 6 4 fs
(1 ) A d d r:0 4 H , D a ta :6 2 H
(2 ) A d d r:0 1 H , D a ta :8 0 H
(1 ) A d d r:0 4 H , D a ta :6 2 H
(2 ) A d d r:0 1 H , D a ta :8 0 H
(3 ) S to p e x te rn a l c lo c k
2
S
2
S
[AK4640]
2004/03