ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 107

• Manufacturer Part Number: ak8825
• Description: Hd/sd Multi Format Video Encoder With 3ch Dac
• Manufacturer: AKM Semiconductor, Inc.

■ Closed Caption
■ WSS
■ RGB Output
I/O Data Format Register
Sub Address 0x0B
■ DAC operating clock
operation clock of each mode.
Rev-E-00
HDSDMASE
The description about “Closed Caption” is written in [6. Common Function Specification].
Closed Caption function is valid at 525i mode.
The description about “WSS” is written in [6. Common Function Specification].
WSS function is valid at 625i /625p mode.
The AK8825 can output Analog RGB signal with digital RGB Data in.
YC2RGB-bit of I/O Data Format Register [SubAddress 0x0B] is a control bit for RGB output function.
The AK8825 has x2 PLL, DAC works with this x2 clock in Component Video Encoder mode. Following table shows DAC
DAC Operation Clock
YC2RGB-bit
bit 7
Input Data
0
1
YC2RGB
bit 6
Output signal
RGB Output
YUV Output
525i/625i
54MHz
Reserved
bit 5
525p/625p
54MHz
DTFMT
bit 4
Note
107
CONVMOD1
148.5MHz
bit 3
1080i
CONVMOD0
bit 2
148.5MHz
720p
INPFMT1
bit 1
default Value 0x00
INPFMT0
bit 0
2008/03
[AK8825]