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[AK4675]
MS0963-E-00
2008/05
- 93 -
<Stereo Line Output Control Sequence (in case of using Pop Noise Reduction Circuit)>
P M L O 1 b it
P M R O 1 b it
L O P S 1 b it
L O U T 1 p in
R O U T 1 p in
( 1 )
( 2 )
N o r m a l O u tp u t
( 3 ) ( 4 )
( 5 )
( 6 )
≥
3 0 0 m s
≥
3 0 0 m s
Figure 65. Stereo Line Output Control Sequence (in case of using Pop Noise Reduction Circuit)
(1)
Set LOPS1 bit = “1”. Stereo line output enters the power-save mode.
(2)
Set PMLO1=PMRO1 bits = “1”. Stereo line output exits the power-down mode.
LOUT1 and ROUT1 pins rise up to VCOM voltage. Rise time is 200ms (max 300ms) at C=1
μ
F and
AVDD=3.3V.
(3)
Set LOPS1 bit = “0” after LOUT1 and ROUT1 pins rise up. Stereo line output exits the power-save mode.
Stereo line output is enabled.
(4)
Set LOPS1 bit = “1”. Stereo line output enters power-save mode.
(5)
Set PMLO1=PMRO1 bits = “0”. Stereo line output enters power-down mode.
LOUT1 and ROUT1 pins fall down to VSS1. Fall time is 200ms (max 300ms) at C=1
μ
F and AVDD=3.3V.
(6)
Set LOPS1 bit = “0” after LOUT1 and ROUT1 pins fall down. Stereo line output exits the power-save mode.