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rt 谢谢啊
DDR需要优先保证。
除了DDR,其它要注意的就是差分线。有USB的DM,DP;网络的RX+,- TX+,TX-
那我做的阻抗 要做多少呢 ？能否列个表给我 我板子上的芯片有ddr2 nandflash usb dm365 tvp5146
