Quectel RG520N-AT - 4 Application Interfaces; USB Interface

5G Module Series
RG520N-AT_Hardware_Design 45 / 109
4 Application Interfaces
4.1. USB Interface
The module provides one USB interface. The USB interface complies with the USB 3.1 and USB 2.0
specifications, and supports SuperSpeed (10 Gbps) for USB 3.1 Gen 2, high-speed (480 Mbps) and
full-speed (12 Mbps) for USB 2.0.
Table 11: Functions of the USB Interface
Pin definition of the USB interface is listed as follows:
Table 12: Pin Definition of USB Interface
Functions
AT command communication
√
Data transmission
√
GNSS NMEA sentence output
√
Software debugging
√
Firmware upgrade
√
Voice over USB*
√
Pin Name
Pin No.
I/O
Description
Comment
USB_VBUS
82
AI
USB connection detect
For USB connection
detect only.
USB_DP
83
AIO
USB 2.0 differential data
(+)
Requires differential
impedance of 90 Ω.
USB 2.0 compliant.
USB_DM
85
AIO
USB 2.0 differential data
(-)