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H8/3003 数据表(PDF) 245 Page - Renesas Technology Corp |
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H8/3003 数据表(HTML) 245 Page - Renesas Technology Corp |
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245 / 715 page ![]() 8.4.12 Aborting a DMA Transfer When the DTE bit in an active channel is cleared to 0, the DMAC halts after transferring the current byte or word. The DMAC starts again when the DTE bit is set to 1. In full address mode, the DTME bit can be used for the same purpose. Figure 8-23 shows the procedure for aborting a DMA transfer by software. Figure 8-23 Procedure for Aborting a DMA Transfer DMA transfer abort Set DTCR DMA transfer aborted 1 1. Clear the DTE bit to 0 in DTCR. To avoid generating an interrupt when aborting a DMA transfer, clear the DTIE bit to 0 simultaneously. 227 |
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