板子是按照C6678EVM板做的，只是PHY芯片选用的是88E1111,，PHY地址改为00111。运行的程序是C6678的GE程序，SGMII的连接状态返回值一直是0x30.
问题：（1）请问在程序中如何修改PHY的地址？由于6678_EVM的PHY地址是00001现在需要修改为00111？？
（2）现在需要由SGMII1修改为SGMII0，程序中该如何修改？？？
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