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TUSB8041芯片,自己做出来的板卡实际测试极限速度只有52M/S,不知是什么原因会导致这种情况产生

Other Parts Discussed in Thread: TUSB8041

TUSB8041芯片,自己做出来的板卡实际测试极限速度只有52M/S,不知是什么原因会导致这种情况产生?所有的线已经做90阻抗,阻抗不连续的话,会导致这种情况产生吗