LTE Module Series
Smart EVB User Guide
Smart_EVB_User_Guide Confidential / Released 14 / 29
Figure 5: Power Interface
3.2. USB Device Interface
The Smart EVB provides a USB 2.0 interface which complies with USB 2.0 standard and supports OTG
function. It is used for AT command communication, data transmission, firmware upgrade and GNSS
NEMA output.
Meanwhile, Smart EVB provides a micro-USB receptacle J602 to connect with a host device. The
USB_DP and USB_DM data lines are connected directly to the module. The schematic of the USB
interface is shown in the following figure and the pin assignment of the J602 is listed in the table below.
Figure 6: USB Interface Circuit
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