參數(shù)資料
型號(hào): AK8812
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(yè)數(shù): 19/36頁(yè)
文件大?。?/td> 377K
代理商: AK8812
ASAHI KASEI
[AK8811/12]
Rev.1.1 2000/01
19
Video ID
AK8811/12 supports Video ID (EIAJ standard, CPR-1204) encoding for the distinction of an
aspect ratio, etc. Setting or Resetting the VBID-bit of [ Video Process 2 Register(02H) ], this
function is switched On/Off. The data is set by using [ Video ID Data Register(1AH, 1BH) ].
VBID Data Renewal Timing
.
VSYNC
Set Control Register
NEW DATA
SI/SDA
Data #1
OLD DATA NEW DATA
Fig. 5 VBID Data renewal Timing
VBID Data Layout
VBID is consists of 20 bits and its format is shown as follows.
AK8811/12 generates CRC code automatically and appends it to the data. Initial value of
the Polynomial is 1.
Fig. 6 VBID code assignment
WORD 0
2 bit
CRC
6 bit
WORD 2
8 bit
WORD 1
4 bit
DATA
bit 20
bit 1
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