AK4636 Datasheet, PDF (99/105 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP

■ Video Signal Input and Output
[AK4636]
Clocks
Clocks can be stopped, if only video output is enabled.
PMVCM bit
(Addr:00H, D6)
X
1
(1)
VGCA4-0 bits
(Addr:0CH, D4-0)
PMV bit
(Addr:01H, D7)
X,XXXX
(2) ₍₃₎
0,0010
(4)
VOUT pin
VSS1
Normal Output
VSS1
Example:
Audio Function :No use
PLL Master Mode
VGCA : 0dB
(1) Addr:00H, Data:45H
(2) Addr:0CH, Data:02H
(3) Addr:01H, Data:8BH
Video Output
(4) Addr:01H, Data:0BH
Figure 79. Video Output Sequence
<Example>
When only the video block is operated, the clocks are not needed to be supplied.
(1) Power up VCOM: PMVCM bit = “X” → “1”
(2) Set up the GCA gain (VGCA4-0 bits)
(3) Power up the Video Amp: PMV bit = “0” → “1”
The signal input to the VIN pin is output from the VOUT pin.
(4) Power down of the Video Amp: PMV bit = “1” → “0”
The output from the VOUT pin will stop and goes to 0V. Then VCOM can be powered-down when not using
any audio functions.
MS1012-E-01
- 99 -
2010/08