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MFC2000 bảng dữ liệu(PDF) 203 Page - List of Unclassifed Manufacturers

tên linh kiện MFC2000
Giải thích chi tiết về linh kiện  Multifunctional Peripheral Controller 2000
PDF  426 Pages
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nhà sản xuất  ETC [List of Unclassifed Manufacturers]
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MFC2000 bảng dữ liệu(HTML) 203 Page - List of Unclassifed Manufacturers

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Hardware Description
MFC 2000 Multifunctional Peripheral Controller 2000
100723A
Conexant
7-55
7.3.4
Firmware Operation
Firmware sequence of operations:
1.
Setup the external video capture device via two-wire serial interface
2.
Poll the status register in external video capture device via two-wire serial interface
3.
Read VidLLStat and VidOddFLStat registers if video signal is detected
4.
Setup DMA based on the values stored in VidLLStat and VidOddFLStat registers
5.
Write to VidLineSizeCfg register based on the VidLLStat
6.
Start the video capture by writing to VidCaptureCtrl register
DMA operation:
Odd Field Address
Even Field Address
Step/Jump
0
n+1
n+2
1
2
n
Start
Stop
signal from video decoder device,
indicating the end of the odd field
signal from video decoder device,
indicating the end of frame capture
Figure 7-31. DMA Operation
DMA features:
•
clear internal counter after address/other registers are written
•
selection bit (scan/video)
− scan: 1 address will be used, and operation is simple
− video: 2 addresses will be used, and operation is complex as shown above



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