ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 112

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

■ Color Burst Signal (SDTV)
SD Block Control Register
Sub Address 0x11
Sub-carrier frequency 3.57561188MHz is allowed when PAL-M mode is selected.
Sub Carrier Frequency and Sub Carrier Phase are set by Sub Carrier Frequency Control Register (R/W) [Sub Address
0x16] Sub Carrier Phase Control Register (R/W) [Sub Address 0x17] .
The burst frequency and initial phase resolution are as follows.
Rev-E-00
Color burst signal is generated by 32bits-length Digital Frequency Synthesizer. Subcarrier Frequency of Color-Burst is set by
SDVM0-SDVM1 -bits of SD Block Control Register (R/W) [Sub Address 0x11] .
SDBBG
bit 7
Frequency resolution
SCH Phase resolution
SDCBG
bit 6
PAL-N(non-Arg)
PAL-B,D,G,H,I
PAL-N(Arg)
NTSC-4.43
Standard
NTSC-M
PAL-M
PAL60
SDSETUP
bit 5
Burst Table
Subcarrier Freq
3.57954545
3.57561188
4.43361875
4.43361875
4.43361875
4.43361875
3.5820558
(MHz)
SCR
bit 4
0.8046Hz
360 ° /256
112
[SDVM1,SDVM0]
Video Process 1
SDVM3
bit 3
[0,0]
[0,1]
[1,1]
[1,0]
[1,1]
[1,1]
[1,1]
SDVM2
bit 2
SDVM1
bit 1
Default Value 0x10
SDVM0
bit 0
2008/03
[AK8825]