Key Features - Quectel RG520N-AT Hardware Design

2.2. Key Features

Table 4: Key Features
Feature Detail
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Power Supply
⚫
⚫
⚫
SMS
⚫
⚫
(U)SIM
Supports USIM/SIM card: 1.8/2.95 V
Interfaces
⚫
⚫
Audio Features
⚫
⚫
⚫
PCM
⚫
Interfaces
⚫
⚫
SPI
⚫
⚫
⚫
⚫
I2C Interface
⚫
⚫
⚫
I2S Interface*
⚫
⚫
⚫
USB Interface
⚫
SDIO Interface Compliant with SD 3.0 protocol
RG520N-AT_Hardware_Design
Supply voltage: 3.3–4.4 V
Typical supply voltage: 3.8 V
Text and PDU mode
Point-to-point MO and MT
SMS cell broadcast
SMS storage: ME by default
Supports two digital audio interfaces: PCM and
LTE: AMR/AMR-WB
Supports echo cancellation and noise suppression
Supports two PCM interfaces, one is only used for Bluetooth
is used for SLIC or Codec (multiplexed with I2S*)
Supports 16-bit linear data format
Supports long frame synchronization and short frame synchronization
Supports master and slave modes, but must be in master mode for long frame
synchronization
Provides a duplex, synchronous and serial communication link with the peripheral
devices
One SPI that only supports master mode
1.8 V operation voltage with clock frequency up to 50 MHz
One I2C interface
Comply with I2C Specification, Version 3.0
Multi-master mode is not supported
Supports 16-bit linear data format
I2S is a common 4-wire DAI used in Hi-Fi, STB and portable devices
The DIN and DOUT traces are used for audio transmission, whilst the bit clock
and left/right clock synchronize the link
Compliant with USB 3.1 and 2.0 specifications, with maximum transmission rates
up to 10 Gbps on USB 3.1 and 480 Mbps on USB 2.0
Used for AT command communication, data transmission, GNSS NMEA sentence
output, software debugging, firmware upgrade and voice over
Supports USB serial driver: Windows 7/8/8.1/10/11, Linux 2.6–5.18, Android
4.x–13.x
5G Module Series
I2S*
audio* and the other
USB*
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