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M16C/29 датащи(PDF) 121 Page - Renesas Technology Corp |
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M16C/29 датащи(HTML) 121 Page - Renesas Technology Corp |
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121 / 499 page ![]() 11. DMAC p u o r G 9 2 / C 6 1 M page 97 8 5 4 f o 7 0 0 2 , 0 3 .r a M 2 1 . 1 . v e R 2 1 1 0 - 1 0 1 0 B 9 0 J E R Figure 11.5 Transfer Cycles for Source Read CPU clock Address bus RD signal WR signal Data bus CPU use CPU use CPU use CPU use Source Source Destination Destination Dummy cycle Dummy cycle (1) When the transfer unit is 8 or 16 bits and the source of transfer is an even address Address bus RD signal WR signal Data bus CPU use CPU use CPU use CPU use Source Source Destination Destination Dummy cycle Dummy cycle (3) When the source read cycle under condition (1) has one wait state inserted Address bus RD signal WR signal Data bus CPU use CPU use CPU use CPU use Source Source Destination Destination Dummy cycle Dummy cycle Source + 1 Source + 1 (2) When the transfer unit is 16 bits and the source address of transfer is an odd address. Address bus RD signal WR signal Data bus CPU use CPU use CPU use CPU use Source Source Destination Destination Dummy cycle Dummy cycle Source + 1 Source + 1 (4) When the source read cycle under condition (2) has one wait state inserted NOTE: 1. The same timing changes occur with the respective conditions at the destination as at the source. CPU clock CPU clock CPU clock |
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