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TUSB8020B: 问题咨询

Part Number: TUSB8020B

你好,我有个问题想咨询下,我用TUSB8020B做USB3.0 HUB,目前发现下行端口1可以正常识别USB3.0设备,速率是SuperSpeed,端口2只能识别USB2.0,速率是High-speed,原理图如下,请问这个是哪里设置了吗USB.pdf