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您好：
在CC2538手册中描述到芯片USB功能是工作在Device mode下，手册没有特别指出芯片支持USB host 和USB OTG功能，所以CC2538的USB功能只能作为USB外设，而不能作为USB主机，请问我理解的正确吗？
谢谢您的回答，祝您生活愉快！
对，作为从机，usb 2.0 full speed device
