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TMS320F28388D: 怎么识别芯片的唯一性?

Part Number: TMS320F28388D


我有5台设备,使用的都是TMS320F28388D芯片,程序也一模一样,其中一台要做主机,其他的做从机。我应该怎么设计呢?如果芯片有唯一标识符,我可以将5台设备的标识符都发出来,让标识符最小或者最大的那个做主机。