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Access Local Bus simultaneously

Question asked by Jia Guo on Jul 16, 2020



I'm using MPC8569, with a NAND flash and DSP connected to Local Bus using different chip select. If MPC8569 and DSP exchanging data, while another task recording logs to NAND flash periodically, we found that it is very easy to get MPC8569 hang. Since both NAND flash and DSP may communicate to MPC8569 using Local Bus simultaneously, I wonder if the operation should be mutually excluded to avoid Local Bus conflicts. Please help me, thanks!