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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/889090/tusb8042a-termination-at-port-4-if-only-3-are-used
您好！
另一个问题是：
如果仅使用3个端口，我是否需要在第四个未使用的端口上为 USB_SS*或 USB_D*添加终端？
此致、
Marion
您好、Marion、
这些引脚不能保持未连接。
