ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 67

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

(2) Slave Synchronization mode
AK8825 can make synchronization using HSYNC/VSYNC timing.
The coming HSYNC is used for synchronization for horizontally, and VSYNC is used for Line-Sync.
The falling edge of the each timing signal is used for Synchronization.
Synchronization timing is AK8825 original timing and the timing defined in CEA861-D standard.
Timing is set by the register (HDCEA861-bit of HD mode Register [Sub Address 0x00] .
HD Mode Register
Sub Address 0x00
HDCEA861-bit
The AK8825 recognizes 1st/2nd Field to watch the relation between HSYNC and VSYNC falling edge.
Rev-E-00
HDCEA861D
HDCBG
bit 7
0
1
HDBBG
bit 6
CEA-861-D Sync-timing
AK8825 Sync timing
Sync-timing
HDSETUP
bit 5
HDEAVDEC
bit 4
67
HDCEA861
bit 3
HDMODE1
bit 2
Note
HDMODE0
bit 1
default Value 0x00
HDRFRSH
bit 0
2008/03
[AK8825]