This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
我用TL16C554扩展串口。先在51单片机上试好了,又移植到DSP5509上,用到CPLD。
现在通过串口可以发出数据来,但是波特率不对。
晶振用4M。根据手册,对应波特率9600,8M是DLL=52,
4M是DLL=26。可是我把DLL设成180,才凑出一个600的波特率来。
这差的也太多啦。
请问高手,怎么回事?谢谢!