SIM7090G EVB Kit User Guide V1.00
www.simcom.com
3.4 UART Port Interface
EVB UART Port interface (B) can provide 5V power supply. This power supply is stepped down to 3.8V by
LDO and then supplies power to VBAT of the module.
EVB UART Port interface (B) could be imaged to two virtual ports. Enhanced COM port is for main UART.
And Standard COM port is for DEBUG UART.
Figure 5: Virtual Serial Ports
Enhanced COM port: AT communication
Standard COM port: Debug
CP2105 driver is available here:
http://www.silabs.com/products/interface/usb-bridges/Pages/usb-bridges.aspx
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