AK8813 Datasheet, PDF (37/51 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHIKASEI
[AK8813/14]
Video Process 1 Register (R/W) [Address 0x01]
Sub Address 0x01
bit 7
bit 6
BBG
CBG
0
0
bit 5
SETUP
1
bit 4
bit 3
SCR
VM3
Default Value
1
0
bit 2
VM2
0
Default Value 0x30
bit 1
bit 0
VM1
VM0
0
0
Video Process 1 Register Definition
BIT
Register
Name
Video Mode 0
bit 0
VM0
Register
~
~
~
bit 3
VM3
Video Mode 3
Register
bit 4
SCR
Sub Carrier
Reset bit
bit 5
SETUP
Setup bit
bit 6
CBG
Color Bar
Generator bit
Black Burst
bit 7
BBG
Generator
R/W
Definition
[VM1:VM0]-bit
00 : 3.57954545 MHz
01 : 3.57561188 MHz
10 : 3.5820558 MHz
11 : 4.43361875 MHz
R/W _{[VM3:VM2]-bit}
00 : 525/60
01 : 525/60 PAL (PAL-M etc.)
10 : Reserved
11 : 625/50 PAL (PAL-B,D,G,H,I,N)
R/W ^{0 : Sub C. Phase Reset off}
1 : Standard Field Reset
R/W ^{0 : No Set-up}
1 : 7.5 IRE Set-up
R/W
0 : Video Encode
1 : Generates color bar
0 : Video Encode
R/W _{1 : Generates black burst}
Register Setting of each standard is shown 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.00
- 38 -
2004/Oct