Service Guide

LTE Standard Module Series
2.2. Key Features
Table 4: Key Features
Features
Details
Power Supply
⚫ Supply voltage: 3.4–4.5 V
⚫ Typical supply voltage: 3.8 V
SMS
⚫ Text and PDU mode.
⚫ Point-to-point MO and MT.
⚫ SMS cell broadcast.
⚫ SMS storage: ME by default.
(U)SIM Interface
⚫ Supports (U)SIM card: 1.8/3.0 V
Audio Features
⚫ Supports one digital audio interface: PCM Interface
⚫ GSM: HR/FR/EFR/AMR/AMR-WB
⚫ WCDMA: AMR/AMR-WB
⚫ LTE: AMR/AMR-WB
⚫ Supports echo cancellation and noise suppression.
PCM Interface
⚫ Used for audio function with external codec
⚫ Supports 16 format
⚫ Supports short frame
⚫ Supports master and slave modes
I2C Interface
⚫ Supports one digital I2C interface.
⚫ Complies with I2C bus protocol specifications
100/400 kHz.
⚫ The multi-host mode is not supported.
USB Interface
⚫ Compliant with USB 2.0 specification (slave only); the data
transfer rate can reach up to 480 Mbps
⚫ Used for AT command communication, data transmission,
software debugging and firmware upgrade
⚫ Supports USB serial driver for Windows 7/8/8.1/10, Linux
2.6–5.14 and Android 4.x–11.x systems
SD Interface
⚫ Supports SD 3.0 protocol.
UART Interfaces
Main UART:
⚫ Used for AT command communication and data
transmission.
⚫ Baud rate: 115200 bps by default, Max 921600 bps.
⚫ Supports RTS and CTS hardware flow control.
Debug UART:
⚫ Used for the output of partial logs