Which is the frequency for the SerDes reference clock when using SGMII in the LS1012A?
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For SGMII (1.25 GBaud) the SerDes reference clock frequency is 100MHz or 125MHz. For SGMII (3.125 GBaud) the SerDes reference clock frequency is 125MHz. See Table 27-3 in the LS1012A reference manual rev.0.
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