CMX7032

AIS Rx Only Baseband Processor with
NMEA 0183-HS Output
and RF Synthesisers (FI-2.0)
Quantity Price Guide: $10.57 
Features
  • Function ImageTM 7032FI-2.0.0.2 now a 'Full' Release
  • Automatic Identification System (AIS) for Marine Safety
  • Dual GMSK Modulators
  • AIS Data Output in RS232 - NMEA 0183 Format
  • Optimum Rx C0channel Performance
  • Configurable by Function ImageTM
  • Two RF Synthesisers
  • Two Auxiliary System Clock Generators
  • Limiter-Discriminator Rx Interface
  • Automatic FI Loading from EEPROM for Host-less Operation
  • DE70321 Evaluation and Development Kit Available
Applications
  • AIS Rx-Only Systems
 
Package Styles:
  • CMX7032Q1 No-Leads 64 VQFN Package
  • CMX7032L9 64-pin VQFN Package
Supply Requirement:
3.0 to 3.6 Volts
Description
A highly integrated Baseband Signalling Processor IC, the CMX7032 FI-2.x fulfils the requirements of the Rx-only Marine Automatic Identification System (AIS) receiver market.

The AIS system allows ships and base stations to communicate their position and other data to each other without the need for a centralised controller. This allows vessels to “see” each other and take appropriate action to avoid collision and so improve marine safety.
The system uses a GMSK 9600 baud data link in the Marine VHF radio band. The system requirements are defined in ITU-M 1371-1.
The CMX7032 FI-2.x is Rx-only, comprising two parallel Limiter-Discriminator Rx paths and an RS232 style / NMEA 0183-HS compatible output (38400 baud). The device performs signal demodulation with associated AIS functions, such as training sequence detection, NRZI conversion and HDLC processing (flags, bit de-stuffing, CRC check).
Integrated Rx data buffers are also provided which removes the need for a host IC.

Provision of a number of user-programmable areas in the FI allows the RF synthesisers of the CMX7032 to be programmed directly, which simplifies the system hardware design, reducing the overall equipment cost and size. Allowance is made in the RS232 interface for an external GPS device to be connected to reduce the proliferation of interface connections in the final product design.

FI-2.0 is compatible with devices with batch code 67228 or later. Devices from earlier batch codes may be used with care, but are not recommended for production. The CMX7032 devices utilise CML’s proprietary FirmASIC® component technology. On-chip sub-systems are configured by a Function Image™: this is a data file that is uploaded during device initialisation and defines the device's function and feature set. The Function Image™ can be loaded automatically from an external EEPROM or from a host µController over the built-in RS232 serial interface.
The device's functions and features can be enhanced by subsequent Function Image™ releases, facilitating in-the-field upgrades.

Evaluation Kits:
    PE0201, PE0002 and DE70321 are available for the evaluation of this product.

 

View CMX7032 (F2.0) Block Diagram