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类似TUSB542/TUSB551这类re-driver的TX，RX接口类型是属于哪种？LVDS ，LVPECL ，CML？还是其他的？谢谢！
输入的是USB 差分对信号，输入电压范围为100mV~1200mV即可，不是标准的LVDS，或者LVPECL，CML电平标准。
那么AC Coupling Capacitor Placement取决于AP吗？另外TUSB542 TX到AP之间route的AC Coupling Capacitor要靠近TUSB542吗？多谢！
0.1uF的AC couple capacitor 靠近USB connector端。
