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TMS320C6657: C6657的EDMA优先级问题

Part Number: TMS320C6657

您好:

我在配EDMA寄存器的OPT时发现其中两个概念PRIV和PRIVID不是很理解。这里的优先级User / Supervisor level,有什么具体的含义吗?求解答,急!!

附上数据手册中关于EDMA3CC寄存器的一段话