CMX7042

AIS Class B Baseband Processor
Quantity Price Guide: $9.64 
 
Features
  • Half Duplex GMSK and FSK Modem
  • AIS and DSC Data Format
  • Flexible Channel Configuration
    Two Simultaneous Rx
    One Tx
  • Supports Carrier-Sensing Channel Access (CSTDMA) Operation
  • Configurable by Function ImageTM
  • Limiter-Discriminator Rx Interface
  • Flexible Tx Interface: I and Q or Two-Point modulation
  • Auxiliary ADC and DAC Functions
  • Two Synthesised System Clock Outputs
  • 'Deep Sleep' Powersave Mode (FI-1.2)
  • Compatible with Serial Flash-based EEPROMS (FI-1.2)
Applications
  • Class B AIS Transponders
  • AIS Rx-Only Monitors
  • Aids to Navigation
 
Package Styles:
  • CMX7042Q3 No-Leads 48 VQFN Package
  • CMX7042L4 48-pin LQFP Package
Supply Requirement:
3.0 to 3.6 Volts
Description
Designed for AIS Class B Implementation, the CMX7042 is a highly integrated, half-duplex, AIS baseband signalling processor IC.
Comprising two parallel limiter-discriminator Rx paths and one I and Q or two-point modulation Tx output path, the CMX7042 fulfills the requirements of the Class B marine AIS system. Each of these paths is configurable for AIS or DSC operation.

The CMX7042 performs signal modulation/demodulation of associated AIS functions, such as training sequence detection, NRZI conversion and HDLC processing (flags, bit-stuffing/de-stuffing, CRC generation/checking). Raw AIS data and AIS burst data handling options are selectable.
Use of the CMX7042 is made more attractive by the provision of two synthesised system clock generators on-chip.
To further simplify the system design process, Integrated Rx/Tx buffers with gain control and auxiliary ADCs and DACs are also provided.

Evaluation Kits: PE0401 and PE0002 are available for the evaluation of this product.

 

View CMX7042 Block Diagram