Digital Walkie Talkie ICs

• Baseband:SCT3288
• Baseband:SCT3258
• RF transceiver:SCT3811
• RF transceiver:SCT3700
• RF PA(2W):SCT3604

Digtal radio & Basestation modules

• Basestation:SCT3252B
• Digtial basestation module :SCT9377
• Digital radio module:SCT9388

Voice & Wireless ICs

• Voice processor:SCT2088
• 2.4GHz Transceiver:SCT2400

Analog Walkie Talkie ICs

• RF PA(2W):SCT3604

SCT2400: 2.4GHz Digital Voice and Data Transceiver

Overview

SCT2400 is a highly integrated RF transceiver and baseband chip for low-power, long range voice communications. The SCT2400 features a 2.4GHz band radio transceiver, supporting ultra-long-distance communication and strong anti-interference capabilities. The SCT2400 also integrates a voice and data transmission baseband core to handle the entire baseband processing. Interfacing to an external audio codec (ADC and DAC), it provides a complete physical and data link layer solution complying with Sicomm’s Digital Family Radio (DFR) digital voice protocol, and most of the call control layer features. The DFR digital voice protocol is a proprietary digital voice protocol developed by Sicomm for the 2.4GHz band.

Features

• 2.4GHz RF Transceiver
• Meets all global 2.4GHz radio regulations including EN 300 440, FCC CFR 17 Part 15 and Japan's ARIB STD-T66
• Long Distance 2.4GHz Transceiver
• High sensitivity, up to -119 dBm during voice intercom
• Superior anti-interference ability
• High efficiency adjustable gain PA, maximum output +12 dBm
• Baseband core
• Spread Spectrum Modulation Modem
• Air interface Physical Layer (Layer -1)
• Air interface Data Link Layer (Layer-2)
• Air Interface Call Control Layer (Layer-3)
• Sicomm DFR (Digital Family Radio) digital intercom communication protocol stack Built-in 3600bps low bit rate voice encoder implementing Advanced Forward Error Correction
• Interface module
• One high speed serial port (I2S) for connection to Codec.
• One USB VCP (Virtual COM Port) for host communication control.
• One UART port for host communication control.
• Two I2C ports for external EEPROM and Codec.
• One VOX detection and one battery charge pin.
• One Beep tone output pin.
• One set of I/O interfaces to connect control devices such as peripheral keys.
• Vocoder support
• 3600bps low bit rate vocoder
• High voice quality
• Noise suppression
• High error correction capability
• Power Management Module
• Built-in linear LDO regulator
• Multiple receive operating modes to minimize current consumption
• 12.5mA Idle mode (scanning)
• 52.5mA current consumption in continuous receive mode
• 64mA current consumption in transmit mode
•  BGA144 package  0.8 mm ball pitch  10 mm x 10 mm outline

Digital Radio Block