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C6657中的SGMII Serdes Status Register中的LOCK位始终无法锁住



        我在调试网络时,对网络接口配置,发现调用历程中的函数configSerdes()函数时,运行到SGMII_SERDES_STS&0x01,该位始终无法变为1,无法锁住PLL时钟,我用示波器测试,送入到DSP的时钟156MHz没有问题。