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网口的GE例程，板子是自己做的，参考时钟和评估版不一样，其他都一样，所有初始化基本都完成了，最后发包时出了错误，错误提示如下：
waiting for transfer complete timeout!
number of descriptors in host queue DDR_HOST_SIZE0_FDQ (2058) changed from 512 to 506
0x823400c1->0x823400e1->0x82340101->0x82340121->0x82340141->0x82340161->0x82340181->0x823401a1->0x823401c1->0x823401e1->...
TX queue 648 entry count = 5
