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6657接收doorbell超过一定次数后失败



A7 FPGA向6657发送doorbell包,6657在中断中对接收到doorbell包进行计数,每次计到2023次,就再也无法接收doorbell

观察寄存器rio_sp_err_stat=0x00180602,寄存器rio_err_det = 0,寄存器SRIO_rio_sp_err_det = 0x00080000,local_err_det = 0x04000000

是什么原因导致端口出错呢?

 6657在回环模式下自发自收doorbell无此问题