поискавой системы для электроныых деталей |
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LC72709E датащи(PDF) 9 Page - Sanyo Semicon Device |
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LC72709E датащи(HTML) 9 Page - Sanyo Semicon Device |
9 / 16 page Structure of the Output Data • The output data consists of a total of 288 bits (36 bytes). The first two bytes are status information, and data is output in a single data block unit. • CNT1 and CNT2 are output LSB first. • The corrected data is output starting with the first bit in the data block. • BIC codes are not output. Note: The CPU can easily select data by discriminating the status information at first during data readout. Data that is determined to be unnecessary can be immediately cancelled without reading it out. (The CPU can simply ignore the data until the next interrupt arrives.) For example, the CPU can also read out just the first 22 bytes (the data block section) of the corrected data, and does not have to read out the unrequired 12 bytes (the layer 2 CRC and parity data). Notes: • CRC indicates the layer 2 CRC check when the ERR flag is 1. • The CRC4 result is the data immediately preceding the point when the CCB output address (#FB) was input and CE was high. • The HEAD flag is valid only for horizontal correction data output, i.e. when VH is 0. • See page 12 for details on VH blanking in the horizontal and vertical directions. • The RTIB flag is valid only for method A. BLN0 to BLN7: Indicates either the block number for the output data or the parity block number. The data blocks in a single frame are numbered 0 to 189, and the parity blocks are numbered 0 to 81. Parity block data is not output for post-vertical correction output. No. 5876-9/16 LC72709E, 72709W • CNT1 • CNT2 CNT1 (8 bits) CNT2 (8 bits) Corrected data 176 bits CRC (14 bits) Parity (82 bits) Indicates the presence of real-time information blocks Layer 4 CRC shift register: Not all zeros. Layer 4 CRC shift register: All zeros (no errors) Data for the first block is being output (block No.0) Data block data Parity block data Error correction and layer 2 CRC check OK Either an uncorrectable error or the layer 2CRC check NG Indicates data received with frame synchronization not achieved Indicates data received with frame synchronization achieved Indicates data received with block synchronization not achieved Indicates data received with block synchronization achieved Output with horizontal correction only Output with horizontal and vertical corrections |
Аналогичный номер детали - LC72709E |
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Аналогичное описание - LC72709E |
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