AK8826VN Datasheet, PDF (39/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

[AK8826VN]
■ WSS
The AK8826 supports to encode WSS (ITU-R. Bt1119), IEC62375 which distinguish the Aspect Ratio etc. Turning “ON/OFF”
of this function is controlled by WSSEN-bit of SD/HD V-Blanking Control Register (R/W) [Sub Address 0x12] at Composite
Video Encoder mode, HDWSS-bit of HD Block Control Register (R/W)[Sub Address 0x07].
Setting data is set to SD WSS Data 1/2 Register(R/W) [Sub Address 0x18 / 0x19] at composite Video Encoder mode, and HD
WSS Data 1/2 Register (R/W) [Sub Address 0x08/0x09] at Component Video Encoder mode.
SD/HD V-Blanking Control Register
Sub Address 0x12
bit 7
bit 6
bit 5
Reserved
Reserved
Reserved
bit 4
Reserved
bit 3
SDWSS
bit 2
SDHDCC284
Default Value 0x00
bit 1
bit 0
SDHDCC21 SDVBID
HD Block Control Register
Sub Address 0x07
bit 7
bit 6
HDWSS
HDCFLT1
bit 5
HDCFLT0
bit 4
HDYFLT1
bit 3
HDYFLT0
bit 2
Reserved
default Value 0x00
bit 1
bit 0
COLSNCEN HDVRATIO
WSS Data Up-date Timing
VSYNC
I²C SDA
DATA
Set Control Register
WSS Data1 WSS Data2
OLD DATA
NEW DATA
Fig. 33
WSS Data1: Composite Video Encoder mode SubAddress 0x18 / Component Video Encoder mode 0x08
WSS Data2: Composite Video Encoder mode SubAddress 0x19 / Component Video Encoder mode 0x09
MS0972-E-01
39
2008/12