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TDA4VH-Q1: TDA4VH's SGMII differenctial singal's amplitude?

Part Number: TDA4VH-Q1

Tool/software:

Dear Ti's expert:

  The datasheet mentioned the "The SGMII interfaces electrical characteristics are compliant with 1000BASE-KX per IEEE802.3 Clause 70." 

  Clasue 70  70.7.2.4: Input singal amplitude section mentioned:  the voltage is dependent  on the receiver implementation /

  So  what's the charateristics for SGMII interface?