Datasheet SCT2400 (CML Microcircuits) - 4

SCT2400 Datasheet
1. 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. Figure 1-1 shows the use of the SCT2400 in a digital radio system. SCT2400 P r RF Control o g r a I m KEY RF Transceiver BaseBand Core O 2.4 GHz m a AMP EN FEM b le ADC LNA Modem USB Match PA PLL& VCO I Host MCU Protocol n t UART erfa OSC ce C O I2S Speaker Vocoder D Power Management E I2C C Mic
Figure 1-1 SCT2400 in Digital Radio System
The SCT2400 includes a set of I/O interfaces for connection of peripheral devices. The SCT2400 connects to an external audio codec via a high speed I2S port for voice data and I2C for control. Additional UART and USB ports provide user interfacing, including support for customer programming, refer to the document SCT2400 Test Guide and CPS Instructions. The SCT2400 includes a power management control module (built-in LDO). The typical operating voltage in the SCT2400 is 3.3V, and the typical I/O interface operating voltage is also 3.3V. The SCT2400 is supplied in a 10 mm x 10 mm, 0.8 mm pitch BGA 144 package. Copyright ©2019 Wuxi Sicomm Communication Technologies, Inc 4 Document Outline Datasheet Front Page Change History 1. Overview 2. Features 3. Pin Configuration 4. RF Transceiver 4.1. Transmitter 4.2. Receiver 4.3. PLL&VCO 4.4. RC Oscillator 4.5. RF Front-end circuit 5. Baseband Core 5.1. Overview 5.2. Modem 5.3. DFR Protocol Stack 5.3.1. DFR Transmitter Signal Flow 5.3.2. DFR Receiver Signal Flow 6. Programmable Function Keys 7. Control Command Protocol 8. Interface and Timing Sequence 8.1. Power Supply 8.2. Reset and Power Up Timing 8.2.1. Baseband Core Operating Frequency 8.2.2. BOOT Mode 8.3. I2S High-speed Serial Port Timing 8.4. I2C Interface 8.5. UART Interface 8.6. USB Interface 8.7. Other Interfaces 9. Battery Management 10. Specification 10.1. Recommended Operating Conditions 10.2. Power Consumption 10.3. ESD 10.4. Parameter Performance 11. Reference Schematic Diagram 12. Text messaging support 13. Package Information 14. Ordering Information Appendix A End of Document