Quectel EG91 Series Hardware Design page 19

USB Interface
UART Interface
SPI Interface
Rx-diversity
GNSS Features
AT Commands
Network Indication
Antenna Interfaces
Physical Characteristics
Temperature Range
Firmware Upgrade
RoHS
NOTES
1)
1. GNSS antenna interface is only supported on EG91-NA/-NS/-VX/-EX/-NAX/-NAXD/-AUX.
2)
2. Within operation temperature range, the module is 3GPP compliant.
EG91_Series_Hardware_Design
Compliant with USB 2.0 specification (slave only); the data transfer rate
can reach up to 480Mbps
Used for AT command communication, data transmission, GNSS NMEA
sentences output, software debugging, firmware upgrade and voice over
USB
Support USB serial drivers for: Windows 7/8/8.1/10, Linux 2.6~5.4, Android
4.x/5.x/6.x/7.x/8.x/9.x, etc.
Main UART:
Used for AT command communication and data transmission
Baud rates reach up to 921600bps, 115200bps by default
Support RTS and CTS hardware flow control
Debug UART:
Used for Linux console and log output
115200bps baud rate
Provides a duplex, synchronous and serial communication link with the
peripheral devices.
Dedicated to one-to-one connection, without chip selection.
1.8V operation voltage with clock rates up to 50MHz.
Support LTE/WCDMA Rx-diversity
Gen8C Lite of Qualcomm
Protocol: NMEA 0183
Data update rate: 1Hz by default
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands
NETLIGHT pin for network activity status indication
Including main antenna interface (ANT_MAIN), Rx-diversity antenna
(ANT_DIV) interface and GNSS antenna interface (ANT_GNSS)
Size: (29.0±0.15)mm × (25.0±0.15)mm × (2.3±0.2)mm
Package: LGA
Weight: approx. 3.8g
Operation temperature range: -35°C ~ +75°C
Extended temperature range: -40°C ~ +85°C
Storage temperature range: -40°C ~ +90°C
USB interface or DFOTA
All hardware components are fully compliant with EU RoHS directive
LTE Standard Module Series
EG91 Series Hardware Design
2)
3)
1)
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