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C6678的SGMII Serdes配置问题



1、硬件平台为C6678评估板,CCS采用5.3;

2、通过查看platform_init()函数源代码,该函数中有如下代码:

if(p_flags->phy)

{

       configSerdes();

       ......

}

3、在configSerdes()函数中,调用CSL_BootCfgSetSGMIICofigPLL(0x00000041),该函数设置PLL MPY=8,通过查看评估板相关资料,评估板SGMII参考时钟输入为312.5M,那么312.5*8=2500M,这个地方的2500M和千兆网的1000M是什么关系呢?请TI专家给予解惑,谢谢。