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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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H8SX/1663R 数据表(PDF) 311 Page - Renesas Technology Corp |
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H8SX/1663R 数据表(HTML) 311 Page - Renesas Technology Corp |
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311 / 1504 page  Section 9 Bus Controller (BSC) Rev. 2.00 Sep. 24, 2008 Page 279 of 1468 REJ09B0412-0200 9.9.10 DACK and EDACK Signal Output Timing For DMAC or EXDMAC single address transfers, the DACK and EDACK signal assert timing can be modified by using bits DKC and EDKC in BCR1. Figure 9.37 shows the DACK and EDACK signal output timing. Setting the DKC bit or the EDKC bit to 1 asserts the DACK or EDACK signal a half cycle earlier. T ma1 T ma2 T 2 T 1 B φ DKC, EDKC = 0 DKC, EDKC = 1 Address bus D15 to D0 D15 to D0 Address cycle Data cycle CSn RD AH RD DACK or EDACK BS RD/ WR Note: n = 3 to 7 Address Read data RDNn = 0 RDNn = 1 Address Read data Figure 9.37 DACK and EDACK Signal Output Timing |
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