6678中连接4片ddr3,采用fly by结构,stub为0么?
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6678中连接4片ddr3,采用fly by结构,stub为0么?
flyby结构,
stub没有做具体要求,自然是越小越好,否则影响信号质量。
走线要求参考DDR3 Design Requirements for KeyStone Devices