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MPC8540 Datasheet(PDF) 783 Page - Freescale Semiconductor, Inc |
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MPC8540 Datasheet(HTML) 783 Page - Freescale Semiconductor, Inc |
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783 / 1302 page  External Signal Descriptions MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1 Freescale Semiconductor 15-5 15.2 External Signal Descriptions This section describes the DMA signals. 15.2.1 Signal Overview Figure 15-3 summarizes the DMA controller signals. Figure 15-3. DMA Signal Summary Note that the three DMA signals for DMA channel 3 are multiplexed with the IRQ9–11 signals on the MPC8540 device. These functions are mutually exclusive and the active function is specified in the PMUXCR register of the global utilities block as described in Section 18.4.1.10, “Alternate Function Signal Multiplex Control Register (PMUXCR).” DMA_DDONE0 DMA External Control Interface DMA DMA_DREQ0 DMA_DACK0 1 1 1 DMA_DDONE1 DMA_DREQ1 DMA_DACK1 1 1 1 DMA_DDONE2 DMA_DREQ2 DMA_DACK2 1 1 1 DMA_DDONE3 DMA_DREQ3 DMA_DACK3 1 1 1 Unit |
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