Yuga CLM920 TE5 LTE Module Hardware Manual

CLM920_TE5 LTE Module Hardware Manual
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YUGA Information Technology Co.,Ltd
3.5 USB interface
CLM920_TE5 module’s USB interface supports USB2.0 high-speed protocol, does not
support USB charging mode. USB interface is defined as follows:
Table 3- 7 USB interface pin definitions
Pin
Signal name
IO
Description
36
USB_DM
IO
USB differential signal -
38
USB_DP
IO
USB differential signal +
4,9,15,18,21,26,27,29,
34,35,37,40,43,50
GND
Ground
Module works as a USB slave, support USB mechanism of sleep and wake up. The USB
reference design circuit is as follows:
Figure 3- 11 USB design circuit diagram
①USB interface supports High speed(480Mbps) and Full speed(12Mbps) mode.
USB designed to strictly follow the USB2.0 protocol requirements, wiring attention to
the data line protection, differential traces, the control impedance of 90Ω.
②In order to improve the anti-static performance, it is recommended that ESD
protection devices should be added to the data lines, the equivalent capacitance of
protection device less than 2pF.
③USB bus power supply voltage provided by the module, without external power .
Meanwhile, the module can only be used as the slave device of the USB bus,
because the module’s USB interface does not provide external USB bus power.
USB interface supports the following functions:
0R
0R
36
38
D-
D+
GND
HOST
USB_DM
USB_DP
GND
MODULE