[AK4675]
<Stereo Line Output Control Sequence (in case of using Pop Noise Reduction Circuit)>
(2 )
(5 )
P M L O 1 b it
P M R O 1 b it
(1 )
(3 )
(4 )
(6 )
L O P S 1 b it
L O U T 1 p in
R O U T 1 p in
N o rm a l O u tp u t
≥ 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=1μF 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=1μF and AVDD=3.3V.
(6) Set LOPS1 bit = “0” after LOUT1 and ROUT1 pins fall down. Stereo line output exits the power-save mode.
MS0963-E-00
2008/05
- 93 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
