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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1263436/tusb8042a-what-is-the-pin-termination-method-when-usb-2-0-is-selected
团队成员 当下游端口仅支持 USB 2.0时、 应如何处理未使用的 SSTX_P/M 和 SSRX_P/M 引脚？ 幻灯片。
悬空 SSTX/RX 引脚或通过 EEPROM 禁用。
最佳
布赖恩
