AK8850 Datasheet, PDF (70/99 Pages) Asahi Kasei Microsystems – NTSC Digital Video Decoder

ASAHI KASEI
[AK8850]
INPUT VIDEO STANDARD REGISTER ( R / W )[ SUB ADDRESS 0x00 ]
This register sets the input video signal Standard. Automatic setup recognition is not available.
Reserved Bits must be set to “ 0 “.
Sub Address 0x00
Default Value : 0x00
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Reserved
NENT
B/W
SETUP
VS3
VS2
VS1
VS0
Default Value
0
0
0
0
0
0
0
0
Input Video Standard Register Definition
BIT Register Name
R/W Definition
Set the input video standard
bit 0
VS0
Video Standard bit
~
~
bit 3
VS3
R/W VS3 VS0
0000 : NTSC/ 525Component
1111 : 625Component
AK8850 can deal with only component signal for
625- video ssytems.
Other settings are reserved.
bit 4
SETUP
Setup bit
bit 5
B/W
Black & White bit
bit 6
NENT
Component Video Sel bit
bit 7 Reserved Reserved bit
0 : without Setup [Default]
R/W 1 : with Setup
B/W video signal setting
R/W 0 : Color video signal is input [Default]
1 : B/W video signal is input
R/W Set the Component Video Signal
0 : MII Level Component Video signal [Default]
1 : BETACAM Level component video signal
R/W Reserved bit
Setting Component input is done as follows.
1. Component input is selected via the input signal select register.
2. Selection of MII or Betacam is done by the Input Video Standard Register NENT-bit.
3. Set either 525- or 625 line systems.
Rev.0
70
2003/01