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IWR1443 EVM boost上的TM4C1294NCPDT (XDS110)是否会将TTL电平转换成RS232电平，并通过usb与PC连接。并且在PC上虚拟出的两个串口
XDS110 Class Application/User UART
XDS110 Class Auxiliary Data Port
采用的是什么电平，就是需不需要再将RS232电平再转换为USB的差分电平。
