AK8811 Datasheet, PDF (28/36 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHI KASEI
[AK8811/12]
Interface Mode Register (W only default A4H)
Sub Add bit 7
bit 6
bit 5
bit 4
bit 3
00H BLN4 BLN3 BLN2 BLN1 BLN0
bit 2
FID
bit 1
MAS
bit 0
CCIR
Symbol
BLN4 - BLN0
FID
MAS
CCIR
Value
*****
0
1
0
1
0
1
Description
Line Blanking
No.
Select VSYNC
Select FID
Slave mode
Master mode When CCIR=0,it’s
valid
CCIR656 non-decode
CCIR656 decode
default
10100
default
default
default
Video Process 1 Register (W only default 18H)
Sub Add bit 7
bit 6
bit 5
bit 4
01H ^Reserved CBG SETUP SCR
bit 3
VM3
bit 2
VM2
bit 1
VM1
bit 0
VM0
Symbol
CBG
SETUP
SCR
VM3 – VM2
VM1-VM0
Value
0
1
0
1
0
1
00
01
10
11
00
01
10
11
Description
Video Encode
Generates color bar
No Set-up
7.5 IRE Set-up
Sub C. Phase Reset off
Standard Field Reset
525/60
525/60 PAL (PAL-M etc.)
Reserved
PAL
3.57954545 MHz
3.57561188 MHz (PAL-M only)
3.5820558 MHz
4.43361875 MHz
default
default
default
default
default
Register Setting of each standard is showend as following ;
VM3-VM0
NTSC-M
0000
PAL-B,D,G,H,I
1111
PAL-M
0101
PAL-60
0111
NTSC4.43
0011
• When SCR is “ON”, the Subcarrier Phase is reset every 4 fields for NTSC, every 8
fields for PAL.
• Even when SETUP is “ON”, there is no Set-up (Pedestal) during the blanking lines.
Rev.1.1
28
2000/01