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Original question:
LMH1219: LMH1219在12G模式下不能lock
我们在调试lmh1219的时候遇到一个问题,在3G/6G模式下,lmh1219都能正常工作。在12G模式下lmh1219不能lock,读出cdr lock状态在0和1之间跳变,读寄存器0x02的速率模式在0x80和0x89之间跳变,lmh1218的cdr是lock状态,速率模式也是锁定在11.88Gbps。
是回环线的问题,原先的cable不支持12G,换了12G cable之后,问题解决