这个问题似乎与Mux的 回波损耗 有关,不幸的是这是不能真正改变的。
看眼图我的最佳建议是加入TUSB21X redriver (如TUSB211A),并将其设置为最低的 boost 设置,或查看信号的迹线看哪里可以缩短以减少迹线中的损失量。
The current issue seems to be related to the return loss of the mux, which is something that cannot really be changed unfortunately.
Looking…