CMX7032 Processor Datasheet

CMX7032 Datasheet, PDF, Equivalent


Part Number

CMX7032

Description

AIS Data Processor

Manufacture

CML

Total Page 30 Pages
Datasheet
Download CMX7032 Datasheet


CMX7032
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
CMX7032
CMX7042
AIS Data Processor
D/7032/42_FI1.2/15 March 2018
DATASHEET
Provisional Issue
Marine AIS data processor designed for Limiter-Discriminator based RF systems
Features:
Half-Duplex GMSK and FSK Modem
AIS and DSC Data Format
Optimum Co-channel and Adjacent-channel
Performance
Flexible Channel Configuration:
Two Simultaneous Rx
One Tx
Support for:
Self Organising Time Division Multiple Access
(SOTDMA)
Carrier-Sensing Channel Access (CSTDMA)
Operation
Low Profile 64 or 48 pad Leadless VQFN and
64 or 48 pin LQFP Packages
Configurable by Function Image
Two RF Synthesisers (CMX7032 only)
Two Auxiliary System Clock Generators
Low-Power (3.0V to 3.6V) Operation
Limiter-Discriminator Rx Interface
Flexible Tx Interface: I/Q or Two-point
Modulation
Auxiliary ADC and DAC Functions
4 x (10-bit) DACs
2 x (10-bit) ADCs
Applications:
Automatic Identification System (AIS)
for Marine Safety
AIS Aids-To-Navigation (AtoN)
AIS Class A and B Transponders
AIS Rx-only or Tx-only Modules
T x:
I/Q or
2-poi nt
Rx1:
Li m i ter-
Di scri m i nator
Rx2:
Li m i ter-
Di scri m i nator
AIS
Radio
Tranceiver
Tx Section
Output
Dri vers
Rx Section
GMSK
Encoder
GMSK
Decoder
FSK
Decoder
GMSK
Decoder
DACs
ADCs
GPIO
Dual Clock Generators
Dual RF Synthesisers
(CMX7032 only)
Message
Buffer
HDLC
NRZI
Encoder
HDLC
NRZI
Decoder
HDLC
NRZI
Decoder
Message
Buffer
Mesage
Buffer
Mesage
Buffer
C-BUS
Interface
Sample
Timer
Interrupt
Generator
Reset and
Power
control
Auxiliary
Section
CMX7032
CMX7042
Host
Micro
T CXO
2018 CML Microsystems Plc

CMX7032
AIS Baseband IC with/without RF Synthesiser
CMX7032/CMX7042
1 Brief Description
The highly-integrated Baseband Signalling Processor ICs CMX7032 and CMX7042 fulfil the requirements
of the Class A and Class B Marine Automatic Identification System (AIS) transponder market. The
CMX7042 is identical in functionality to the CMX7032 with the exception that the two on-chip RF
Synthesisers have been deleted, which enables it to be supplied in a smaller package. This document
refers to both parts generically as the CMX7032/CMX7042, unless otherwise stated.
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-R M.1371-4.
The two channel access mechanisms used by AIS (Self Organising Time Division Multiple Access
(SOTDMA) and Carrier-Sensing Time Division Multiple Access (CSTDMA)) are both supported by the
CMX7032/CMX7042. Further information is given in section 6.2.
The CMX7032/CMX7042 devices utilise CML’s proprietary FirmASICcomponent technology. On-chip
sub-systems are configured by a Function Image: this is a data file that is uploaded during device
initialization which defines the device's function and feature set. The Function Imagecan be loaded
automatically from an external serial memory or from a host µController over the built-in C-BUS serial
interface. The device's functions and features can be enhanced by subsequent Function Image
releases, facilitating in-the-field upgrades.
The CMX7032/CMX7042, when used with 7032/7042FI-1.x, is half duplex in operation, comprising two
parallel Limiter-Discriminator Rx paths and one I/Q or two-point modulation Tx path. The Rx paths are
configurable for AIS or DSC operation, the Tx for AIS only. The device performs signal
modulation/demodulation with associated AIS functions, such as training sequence detection, NRZI
conversion and HDLC processing (flags, bit stuffing/de-stuffing, CRC generate/check). Integrated Rx/Tx
data buffers are also provided. This greatly reduces the processing requirements of the host µC. Provision
of a number of auxiliary ADCs and DACs further simplifies the system hardware design, reducing the
overall equipment cost and size.
This document refers specifically to the features provided by the CMX7032/CMX7042 Function Image
FI-1.2.
This Datasheet is the first part of a two-part document comprising Datasheet and User Manual: the User
Manual can be obtained by registering your interest in this product with your local CML representative.
2018 CML Microsystems Plc
2
D/7032/42_FI1.2/15


Features CML Microcircuits COMMUNICATION SEMICOND UCTORS CMX7032 CMX7042 AIS Data Proces sor D/7032/42_FI1.2/15 March 2018 DAT ASHEET Provisional Issue Marine AIS d ata processor designed for Limiter-Disc riminator based RF systems Features: Half-Duplex GMSK and FSK Modem  A IS and DSC Data Format  Optimum Co-c hannel and Adjacent-channel Performance  Flexible Channel Configuration: Two Simultaneous Rx – One Tx Suppor t for: Self Organising Time Division Mu ltiple Access (SOTDMA) Carrier-Sensing Channel Access (CSTDMA) Operation  L ow Profile 64 or 48 pad Leadless VQFN a nd 64 or 48 pin LQFP Packages  Confi gurable by Function Image™  Two RF Synthesisers (CMX7032 only)  Two Au xiliary System Clock Generators  Lo w-Power (3.0V to 3.6V) Operation  Li miter-Discriminator Rx Interface  Fl exible Tx Interface: I/Q or Two-point M odulation  Auxiliary ADC and DAC Fun ctions – 4 x (10-bit) DACs – 2 x (1 0-bit) ADCs Applications:  Automatic Identification System (AIS) for Marine Safety  AIS Aids-To.
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