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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8/3003 数据表(PDF) 228 Page - Renesas Technology Corp |
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H8/3003 数据表(HTML) 228 Page - Renesas Technology Corp |
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228 / 715 page  If M (1 to 255) is the size of the block transferred at each request and N (1 to 65,536) is the number of blocks to be transferred, then ETCRAH and ETCRAL should initially be set to M and ETCRB should initially be set to N. Figure 8-10 illustrates how block transfer mode operates. In this figure, bit TMS is cleared to 0, meaning the block area is the destination. Figure 8-10 Operation in Block Transfer Mode T B Transfer Legend L L M N T B T B Address T M bytes or words are transferred per request Address B A A Block 1 Block N B B Block area Block 2 = initial setting of MARA = initial setting of MARB = initial setting of ETCRAH and ETCRAL = initial setting of ETCRB = L = L + SAIDE • (–1) • (2 • M – 1) = L = L + DAIDE • (–1) • (2 • M – 1) A A B B A B A A B B SAID DAID DTSZ DTSZ 210 |
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