Usb Interface - YUGE CLM920 TD3 Usage Manual

CLM920 TD3 LTE Module Hardware Usage Guide
Symbol Description
Treset Low pulse width
VIH RESET input high level voltage
VIL RESET input low level voltage
Reset RESET timing is as follows：
The CLM920 TD3 module supports AT command reset, and the AT command is
at+cfun=1,1 to restart the module. Detailed instructions for viewing the CLM920 TD3 AT
instruction set manual.

3.5 USB interface

The USB interface of the CLM920 TD3 module provides a USB2.0 High-Speed
interface. The interface supports slave mode and does not support USB charging mode. USB
interface pins are defined as follows：
Pin number
71
70
69
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Table 3-8 RESET pin parameters
Figure 3-10 Reset timing diagram
Table 3-9 USB interface pin definition
Signal name
USB_VBUS
USB_DM
USB_DP
Min Typical
150 200
1.17 1.8
-0.3 0
IO Description
PI USB detection
IO USB differential signal -
IO USB differential signal +
Max unit
450 ms
2.1 V
0.8 V
- 34 -