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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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H8S/2218 Scheda tecnica(PDF) 253 Page - Renesas Technology Corp |
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H8S/2218 Scheda tecnica(HTML) 253 Page - Renesas Technology Corp |
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253 / 750 page  Section 7 DMA Controller (DMAC) Rev.6.00 Jun. 03, 2008 Page 205 of 698 REJ09B0074-0600 7.4.14 Clearing Full Address Mode Figure 7.23 shows the procedure for releasing and initializing a channel designated for full address mode. After full address mode has been cleared, the channel can be set to another transfer mode using the appropriate setting procedure. Clearing full address mode Stop the channel Initialize DMACR Clear FAE bit to 0 Initialization; operation halted [1] [2] [3] [1] Clear both the DTE bit and the DTME bit in DMABCRL to 0; or wait until the transfer ends and the DTE bit is cleared to 0, then clear the DTME bit to 0. Also clear the corresponding DTIE bit to 0 at the same time. [2] Clear all bits in DMACRA and DMACRB to 0. [3] Clear the FAE bit in DMABCRH to 0. Figure 7.23 Example of Procedure for Clearing Full Address Mode |
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