User's Manual

L710HG EVB User Manual

Figure5-2: USB（AT UART）Port

5.3 USB（DEBUG UART）Interface

When software is debugging and analyzing problems, LOG can be captured by USB virtual

DEBUG serial port. In use, you need to dial the switch S4 to the left. After the serial port is

inserted into USB, DB9 serial port is closed. Sending AT can only use the USB virtual serial port

mentioned in 5.2.

Figure5-3: USB（DEBUG UART）Port

5.4 USB 2.0 Interface

The L710HG module supports USB 2.0 with a maximum USB transfer rate of 480Mbps.Software

version download can be download through this USB serial port.