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COMMUNICATION SEMICONDUCTORS
DATA BULLETIN
MX909A
GMSK Modem Data Pump
PRELIMINARY INFORMATION
• GMSK Modulation • RX or TX up to 19.2k bits/sec • Full Data Packet Framing • Mobitex¥ Compatible
• Flexible Operating Modes • Host µC Interface • Low Power 3.3V/5.0V Operation • 24-Pin Small Form Package Option
RADIO
MODULATOR RF
DISCRIMINATOR
ANALOG TX ANALOG RX
MX909A
MODEM DATA PUMP
DATA AND CONTROL BUS
HOST µC
SYSTEM APPLICATION PROCESSING
The MX909A is a low power CMOS device containing all of the baseband signal processing and Medium Access Control (MAC) protocol functions required for a high performance GMSK Wireless Packet Data Modem.