ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 41

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

■ Color Bar Signal Generation Function
[Sub Address 0x00] in Component Video Encoder mode and SDCBG-bit of SD Block Control Register (R/W) [Sub Address
0x11] in Composite Video Encoder mode to “1”.
HD Mode Register
Sub Address 0x00
SD Block Control Register
Sub Address 0x11
■ Setup Process Function
In the AK8825, a 7.5% set-up can be added by Register.
In Component Video Encoder mode, HDSETUP-bit of HD Mode Register (R/W) [Sub Address 0x00] is the control bit of this
function and , in composite Video Encoder mode, SDSETUP-bit of SD Block Control Register (R/W) [Sub Address 0x11] is the
control bit of this function
This bit is enabled at Color-bar Generator mode and Black Burst Generator mode.
HD Mode Register
Sub Address 0x00
SD Block Control Register
Sub Address 0x11
Rev-E-00
The AK8825 can output 100% Color Bar Signal. Color Bar Signal is output by setting HDCBG-bit of HD Mode Register (R/W)
HDCBG
HDCBG
SDBBG
SDBBG
bit 7
bit 7
bit 7
bit 7
HDBBG
SDCBG
HDBBG
SDCBG
bit 6
bit 6
bit 6
bit 6
HDSETUP
SDSETUP
HDSETUP
SDSETUP
bit 5
bit 5
bit 5
bit 5
HDEAVDEC
HDEAVDEC
SCR
SCR
bit 4
bit 4
bit 4
bit 4
41
HDCEA861
HDCEA861
SDVM3
SDVM3
bit 3
bit 3
bit 3
bit 3
HDMODE1
HDMODE1
SDVM2
SDVM2
bit 2
bit 2
bit 2
bit 2
HDMODE0
HDMODE0
SDVM1
SDVM1
bit 1
bit 1
bit 1
bit 1
Default Value 0x10
Default Value 0x10
default Value 0x00
default Value 0x00
HDRFRSH
HDRFRSH
SDVM0
SDVM0
bit 0
bit 0
bit 0
bit 0
2008/03
[AK8825]