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參數(shù)資料
| 型號： | 8817 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | NTSC/PAL Digital Video Encoder |
| 中文描述： | NTSC / PAL數(shù)字視頻編碼器 |
| 文件頁數(shù)： | 37/43頁 |
| 文件大小： | 818K |
| 代理商： | 8817 |
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ASAHI KASEI
[AK8817]
MS0413-E-00
37
2005 / Aug
VBID/WSS 1 Register (R/W) [Address 0x02]
VBID/WSS 2 Register (R/W) [Address 0x03]
Video ID and WSS data setting are made. A common data register is used for both video ID and WSS data.
When VBID bit of mode register is set in NTSC mode, data is for VBID data ,and when WSS bit of
Control 1 Register
is set
in
PAL mode, data is for WSS data.
When VBID-bit is “1” and VMOD-bit is “0” in
Control 1 Register
, the following bits are assigned.
Sub Address 0x02
bit 7
bit 6
bit 5
bit 4
VBID7
VBID8
VBID9
VBID10
Default Value
0
0
0
0
Sub Address 0x03
bit 7
bit 6
bit 5
bit 4
Reserved
Reserved
VBID1
VBID2
Default Value
0
0
0
0
Note ) “0” should be written into reserved bits.
VBID1 ---- VBID14 above correspond to the bit 1 ---- bit 14 which are described at { VBID Data Code Assignment } in
{ ( 14 ) Video ID } section.
A 6-bit CRC code from bit 15 ~ bit 20 is automatically added by the AK8817.
Data is retained till data is updated to a new one.
Following bits are assigned when WSS-bit is “1” and VMOD-bit is “1” in Control 1 Register .
Sub Address 0x02
bit 7
bit 6
bit 5
bit 4
G2-7
G2-6
G2-5
G2-4
Default Value
0
0
0
0
Sub Address 0x03
bit 7
bit 6
bit 5
bit 4
Reserved
Reserved
G4-13
G412
Default Value
0
0
0
0
Note ) WSS data is written with 0x01 first, then 0x02 in this order.
When the 2
nd
byte ( 0x02 ) of WSS data is written, the AK8817 interprets that data is updated to a new one and then
encodes it to the next video line ( Line 23 ).
Data is retained till data is updated to a new one.
default Value 0x00
bit 0
VBID13
bit 3
VBID11
bit 2
VBID12
bit 1
VBID14
0
0
0
0
default Value 0x00
bit 0
VBID5
bit 3
VBID3
bit 2
VBID4
bit 1
VBID6
0
0
0
0
default Value 0x00
bit 0
G1-0
bit 3
G1-3
bit 2
G1-2
bit 1
G1-1
0
0
0
0
default Value 0x00
bit 0
G3-8
bit 3
G4-11
bit 2
G3-10
bit 1
G3-9
0
0
0
0
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