YUGE CLM920 NC5, Hardware User'S Manual, Page: 19 / 37

CLM920_NC3_LTE Module Hardware User Guide
Shang Hai YUGE Information Technology co., LTD Page 18 of 37
Figure 3-9 Reset timing diagram
The CLM920_NC5 Mini PCIE module supports AT command reset. The AT command is at+cfun=1,1 to
restart the module. Detailed instructions can be found in the CLM920_NC5 AT instruction set manual.
3.5 USB interface
CLM920_NC5 Mini PCIE module USB interface supports USB2.0 high-speed protocol, supports slave
mode, does not support USB charging mode. USB input and output traces must comply with the USB2.0
feature. The USB interface is defined as follows:
Table 3-7 USB interface pin definition
Pin number Signal name IO Description
36 USB_DM IO USB differential signal -
38 USB_DP IO USB differential
4,9,15,18,21,26,27,29,
34,35,37,40,43,50
GND Ground
The module acts as a USB slave device and supports USB sleep and wake-up mechanisms. The
reference design circuit is as follows:
Figure 3-10 USB connection design circuit diagram