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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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MFC2000 데이터시트(PDF) 203 Page - List of Unclassifed Manufacturers |
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MFC2000 데이터시트(HTML) 203 Page - List of Unclassifed Manufacturers |
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203 / 426 page  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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