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很高兴和老师们讨论一个问题:
题目是这样的:C6424的EMIF数据总线是16bit但是我想接双口RAM再与FPGA通信,FPAG那边需要32bit的并行数据总线。
如果用16bit数据的双口RAM,FPAG那边不能满足要求; 如果用32bit数据的双口RAM,C6424数据也不能32bit一并输出(只能加一片CPLD转32bit数据输出),地址总线处理比较麻烦。我简单测试了一下C6424总线规律好像如下: