5G Module Series
RG520N-AT_Hardware_Design 14 / 109
2.2. Key Features
Table 4: Key Features
⚫ 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 USIM/SIM card: 1.8/2.95 V
⚫ Supports two digital audio interfaces: PCM and I2S*
⚫ LTE: AMR/AMR-WB
⚫ Supports echo cancellation and noise suppression
⚫ Supports two PCM interfaces, one is only used for Bluetooth audio* and the other
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 USB*
⚫ Supports USB serial driver: Windows 7/8/8.1/10/11, Linux 2.6–5.18, Android
4.x–13.x
Compliant with SD 3.0 protocol
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