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UPP可以达到75Mhz传输速率吗?



我用Upp模块做环路测试,A接收,B发送,设置75Mhz时,数据基本就不对,25Mhz时,前边的十几个数不正确,后边的正确。测试方式为从的SDRAM空间的地址0x40000000读取256字数据,传输到0x41e00000的地址空间(或0x80000000空间),现象如图所示。把中断打开,未发现有溢出、编程错误等情况。是我的测试方式不对,还是其它原因,有做过类似测试的提供一下参考吧,谢啦