CMX7143

CML Microcircuits COMMUNICATION SEMICONDUCTORS CMX7143 Multi-Mode Wireless Data Modem D/7143_FI2.0/10 May 2013 DATASHEET Provisional Issue 7143FI-2.x 4FSK Packet Data Modem Features  Multiple Modulation Types o 7143 FI-1.0: GMSK/GFSK Modulation o 7143 FI-2.0: 4FSK Modulation - Over-air compatibility with CMX969 for RD-LAP Tx/Rx o 7143 FI-3.0: FFSK/MSK Modulation  Automatic Frame Sync Detection  Automatic Preamble, Frame Sync Insertion  2 x Auxiliary ADCs and 4 x Auxiliary DACs  3 x Analogue Inputs (RSSI or Discriminator)  C-BUS Serial Interface to Host µController  Flexible Bit Rates  Raw Mode, Data Pump, Carrier Sense  Auxiliary System Clock Outputs  Tx Outputs for 2-point or I/Q Modulation  Available in 48-pin LQFP and VQFN Packages  Low-power 3.3V Operation  Flexible Powersave Modes  Formatted or Raw Data Modes  Soft Decision Data Bits Host µC C-BUS C-BUS registers Status Mode/Aux Data Config (in Idle) CMX7143 System Clk Clock Synthesizers 2 aux ADCs 3 aux DACs System 1 aux/RAM DAC Tx Trigger Input GPIO Data Buffer Tx Sequence Control Modem Tx Rx CS MOD1 gain MOD2 gain Rx RSSI Configuration Parameters Modulator Discriminator RF 1 Brief Description Designed for use in wireless data modems, the CMX7143 with 7143FI-2.x is a half-duplex modem with carrier sense and automatic control of transmit hardware, including a RAMDAC for PA ramping. Carrier sense provides a listen before talk capability, automatically reverting to receive if acti...