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C6670 PCIE使用通道0还是通道1



现在已经知道C6670的PCIE有两个通道,但不能连接两个设备。我想问的是,我仅使用一个通道与其他设备互联,我是只能用通道0还是通道1,抑或这两个里面随我选择。由于在手册中没看到这个,于是就跑这里来问下。还有是若使用了某一个通道,我需要把还有一个通道通过配置MMR关闭,我也没找到是要具体配置哪个寄存器,望指明,谢谢!