Quectel LTE-A Module Series User Manual

LTE-A Module Series
EM120R-GL&EM160R-GL Hardware Design
EM120R-GL&EM160R-GL_Hardware_Design 37 / 79
3.7. USB Interface
EM120R-GL&EM160R-GL provide one integrated Universal Serial Bus (USB) interface which complies
with the USB 3.0/2.0 specifications and supports super speed (5 Gbps) on USB 3.0, high speed (480
Mbps) and full speed (12 Mbps) modes on USB 2.0. The USB interface is used for AT command
communication, data transmission, GNSS NMEA sentences output, software debugging, firmware
upgrade and voice over USB*.
The following table shows the pin definition of USB interface.
Table 11: Pin Definition of USB Interface
For more details about the USB 3.0 & 2.0 specifications, visit http://www.usb.org/home.
Pin No.
Pin Name
I/O
Description
Comment
7
USB_DP
AI/AO
USB 2.0 differential data bus
(+)
Require differential impedance
of 90 Ω
9
USB_DM
AI/AO
USB 2.0 differential data bus
(-)
29
USB_SS_TX_M
AO
USB 3.0 transmit data (-)
Require differential impedance
of 90 Ω
31
USB_SS_TX_P
AO
USB 3.0 transmit data (+)
35
USB_SS_RX_M
AI
USB 3.0 receive data (-)
Require differential impedance
of 90 Ω
37
USB_SS_RX_P
AI
USB 3.0 receive data (+)

Quectel LTE-A Module Series Specifications

General

Brand	Quectel
Model	LTE-A Module Series
Category	Control Unit
Language	English