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软件版本是ise14.7,采用的是4x,2.5G的速率,FPGA将收到的数据进行算法处理,当算法时钟比较低的时候,能够正常通信,当算法时钟速率高时,PowerPC发送压力测试数据,会出现一段时间后,PowerPC无法发送数据的现象,这时通过观察chipscope我们发现,treq_rdy一直是高,通过PowerPC侧的错误代码发现是: Output port has received a packet retry control symbol and cannot make forward progress. This bit is set when bit 13 is set and cleared when a packet-accepted or packet-not-accepted control symbol is received.
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