Quectel LPWA Series, Hardware Design

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LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design 16 /89
2.2. Key Features
Table 4: Key Features
Features Details
Power Supply

Supply voltage: 2.2–4.5 V

Typical supply voltage: 3.3 V
SMS *

Text and PDU mode

Point-to-point MO and MT

SMS cell broadcast

SMS storage: ME by default
(U)SIM Interface Supports USIM/SIM card: 1.8 V only
Audio Features

Supports one digital audio interfaces: PCM and I2C

LTE: VoLTE * under LTE Cat M1
PCM Interface *

Support one digital audio interface: PCM interface for VoLTE * only

Used for audio function with external codec
I2C Interface *

One I2C interface

Multi-master mode is not supported
USB Interface *

Compliant with USB 2.0 specifications, with transmission rates up to
12 MHz on USB Full-speed

Used AT command communication, data transmission, software
debugging and firmware upgrade

USB serial driver:
-
Windows 7/8/8.1/10
-
Linux 2.6–5.4
-
Android 4.x/5.x/6.x/7.x/8.x/9.x system
UART Interfaces
Main UART:

Used for AT command communication and data transmission

Baud rate: 115200 bps baud by default

The default frame format is 8N1 (8 data bits, no parity, 1 stop bit)

Supports RTS and CTS hardware flow control
Debug UART:

Used for firmware upgrade, software debugging and log output

115200 bps baud rate by default

The default frame format is 8N1 (8 data bits, no parity, 1 stop bit)

Support RTS and CTS hardware flow control
Auxiliary UART:

Used for RF calibration debugging and log output

961200 bps baud rate by default

The default frame format is 8N1 (8 data bits, no parity, 1 stop bit)

Support RTS and CTS hardware flow control