AK8826VN Datasheet, PDF (136/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

SD Block Control Register (R/W) [Sub Address 0x11]
[Composite Video Encoder Block]
to set Output signals
Sub Address 0x11
bit 7
bit 6
SDBBG
SDCBG
0
0
bit 5
SDSETUP
0
bit 4
bit 3
SCR
SDVM3
Default Value
1
0
bit 2
SDVM2
0
[AK8826VN]
Default Value 0x10
bit 1
bit 0
SDVM1
SDVM0
0
0
BIT Register Name
R/W
Definition
[ SDVM1 : SDVM0 ] – bit
00 : 3.57954545 MHz
01 : 3.57561188 MHz
bit 0
~
bit 3
SDVM0
~
SDVM3
Video Mode 0 Register
~
Video Mode 3 Register
10 : 3.5820558 MHz
R/W
11 : 4.43361875 MHz
[ SDVM3 : SDVM2 ] – bit
00 : 525 / 60
01: 525 / 60 PAL (PAL-M etc...)
10 : reserved
11 : 625 / 50 PAL ( PAL-B, D, G, H, I, N )
to set enable / disable reset of Sub-carrier for each color sequence
0: no sub-carrier reset is done.
bit 4
SCR
Sub Carrier Reset bit R/W 1: sub-carrier reset is enabled.
NTSC: reset at every 2 Frames.
PAL: reset at every 4 Frames.
to set the Set-Up
0 : no set-up
bit 5 SDSETUP SD Setup-bit
R/W 1: 7.5 % set-up is added.
Even when the set-up is turned on, set-up (Pedestal) is not added
while Blanking Line is being output.
setting bit of On-Chip Color Bar
bit 6
SDCBG
SD
Color
Bar
Generator Control bit
R/W
0: input data is encoded.
1: On-Chip Color Bar is output.
When SDBBG bit is set, SDBBG is prioritized.
Black Burst Generator bit
bit 7
SDBBG
SD Black Burst
Generator Control bit
R/W
to output Black Burst signal
0: input data is encoded.
1: Black Burst signal is output.
Even when SDCBG bit is set, SDBBG is prioritized.
SDVM3 – SDVM0 settings for each Standard are as follows.
NTSC
PAL-B,D,G,H,I
PAL-M
PAL-60
NTSC-4.43
SDVM3:SDVM0
0000
1111
0101
0111
0011
MS0972-E-01
136
2008/12