器件名称: MX929B
功能描述: DATA BULLETIN 4-Level FSK Modem Data Pump
文件大小: 617.76KB 共51页
简 介:COMMUNICATION SEMICONDUCTORS
MX929B
4-Level FSK Modem Data Pump
PRELIMINARY INFORMATION
DATA BULLETIN
Features
x 4-Level Root Raised Cosine FSK Modulation x Half Duplex, 4800 to 19.2kbps x Increase Channel Bit Rate/Hz x Full Data Packet Framing x Impulse and NRZ Signal Modes x Enhanced Performance in Noisy Conditions x Error Detection and Error Correction x Low Power 3.3V/5.0V Operation
Applications
x RD-LAP Systems x RCR STD-47 Systems x Two Way Paging Systems x Mobile Data Systems x Wireless Telemetry x DataTAC Terminals x Portable Wireless Data Equipment
RADIO
MODULATOR RF DISCRIMINATOR ANALOG RX ANALOG TX
MX929B
MODEM DATA PUMP
DATA AND CONTROL BUS
HOST C
SYSTEM APPLICATION PROCESSING
The MX929B is a low voltage CMOS device containing all of the baseband signal processing and Medium Access Control (MAC) protocol functions required for a high performance 4-level FSK Wireless Packet Data Modem. It interfaces with the modem host PC and the radio modulation/demodulation circuits to deliver reliable two-way transfer of the application data over a wireless link. The MX929B assembles application data received from the host PC, adds forward error correction (FEC) and error detection (CRC) information, and interleaves the result for burst-error protection. After automatically adding symbol and frame sync codewords, the data packet is converted into filtered 4-level analog signals for modulating the radio transmitter. In receive mode, the MX929B performs the reverse functio……
