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我想用OMAP3530在扩展4个串口，请问一般使用什么芯片扩展，用CPU的那个接口来扩？CPU本身带的3个串口的波特率最高可以是多少？
谢谢！
DM3730有4个uart,请问你具体做什么?
我做工控的要8个串口，还要用到DSP，所以才选3530的
