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on chip DMA of MPC5777C

Question asked by prasad udawant on Nov 14, 2018
Latest reply on Nov 21, 2018 by David Tosenovjan

I am using on chip DMA of MPC5777C for data transfer from flash to RAM. Can Core and DMA access same ram memory address for read/write at the same time? If yes, then can you explain what will happen in following scenarios?

  1. Core is reading ram address and DMA is writing that address at the same time
  2. Core is writing ram address and DMA is reading that address at the same time
  3. Core and DMA is reading that address at the same time
  4. Core  and DMA is writing that address at the same time

Can you please explain crossbar switch significance in this case?

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