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如何调整反射波引起阻抗不匹配问题,光纤通信采用DP83620

Other Parts Discussed in Thread: DP83620

 光纤通信,DP83620芯片与光通信芯片之间采用差分连接,根据规格书,发送引脚3.3V接50欧姆电阻,接收引脚3.3V接130欧姆、80.6欧姆接地。测试发送波形是好的,接收波形上升沿和下降沿波形有回勾,初步分析为阻抗不匹配引起的反射波造成。每次调的话同时调130欧姆和80.6欧姆,而且也不一定合适,这样比较麻烦,如何才能很快的解决这个问题?请各路大神帮忙解析,谢谢。