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HD64F3028F Datasheet(PDF) 9 Page - Renesas Technology Corp |
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HD64F3028F Datasheet(HTML) 9 Page - Renesas Technology Corp |
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9 / 923 page  Rev. 2.00, 09/03, page ix of xxx Item Page Revision (See Manual for Details) 7.4.8 DMAC Bus Cycle Figure 7.17 Timing of DMAC Activation by Low DREQ Level in Normal Mode 233 Figure amended DREQ RD HWR φ LWR , T2 T1 T2 T1 T2 Td T1 T2 T1 T2 T1 T2 T1 T2 T1 CPU cycle DMAC cycle CPU cycle Minimum 4 states Next sampling point Address bus Figure 7.18 Timing of DMAC Activation by Falling Edge of DREQ in Block Transfer Mode 234 Figure amended φ DREQ RD HWR TEND T1 T2 T1 T2 T1 T2 T1 T2 T1 T2 T1 T2 Td T1 T2 DMAC cycle DMAC cycle CPU cycle Next sampling Minimum 4 states End of 1 block transfer LWR , Address bus 7.4.9 Multiple-Channel Operation Figure 7.19 Timing of Multiple-Channel Operations 236 Figure amended φ RD T1 T2 T1 T2 Td T1 T2 T1 T2 T1 T2 Td T1 T2 T1 T2 , DMAC cycle (channel 1) CPU cycle DMAC cycle (channel 0A) CPU cycle DMAC cycle (channel 1) Address bus HWR LWR |
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