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am623支持2路USB 2.0，
①我看DEMO板，D+ D-都没有加15K下拉电阻，am623不支持LS模式吗？
②am623的USB支持OTG功能吗
Hi
感谢您对TI产品的关注！请参考Technical Reference Manual的4.8.2.1 USB2SS Unsupported Features章节，不支持Low Speed operation in device mode和On-The-Go (OTG)：
www.ti.com.cn/.../spruiv7b.pdf
