Product Preview
DE70321
Development and Demonstration Kit
September 2007/2
. . . . . . for the CMX7032 Marine AIS Class B Processor IC
Features
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Features
(Continued)
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19.2MHz Reference for 9600bps data
rate
Dual Channel Rx-only operation
On-board EEPROM
RS232 NMEA-0183 Interface for host-
less operation
Flexibility built on
FirmASIC
®
technology
Class B AIS Transceiver Technology
Demonstrator
Designed to meet IEC62287
2 Watt Tx operation
Dual, independent GMSK receivers
C-BUS Interface to host µC
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Brief Description
The DE70321 is a complete AIS Class B (IEC 62287) technology demonstrator aimed at speeding
manufacturers' design and development of AIS Class B and AIS receiver products using the CMX7032 AIS
Class B Baseband Processor with RF Synthesiser IC. The design is a flexible platform to allow users to
configure and evaluate with two build options:
o
o
Class B Transceiver
Dual Channel Rx-only
(using CMX7032 FI-1.x)
(using CMX7032 FI-2.x)
The default board configuration is for dual channel receive on 161.975MHz (AIS channel 1) and
162.025MHz (AIS channel 2) with 25kHz channel spacing and 9600bps over-air data rate. An EEPROM is
included which can automatically load the Function Image™ FI-2.x into the CMX7032 at power-up. Received
data is automatically provided as NMEA 0183-HS sentences at 38,400bps from the DB9 RS232 port.
Function Image™ FI-1.x allows full host control over all CMX7032 functions whereas Function Image™
FI-2.x automatically programs the CMX7032 RF synthesisers to the correct frequencies.
All necessary RF circuits, such as VCOs, a 2 watt PA, harmonic filter, antenna switching and LNA, are
provided on the DE70321 to facilitate easy evaluation and demonstration of the design as a Class B unit. A
C-BUS interface is provided for control of the CMX7032 by a host microcontroller (required to perform the
higher level protocol functions on a Class B implementation).
The design is production engineered for low cost, with minimum number of component types and values
and uses only low-cost off-the-shelf components.
© 2007 CML Microcircuits
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Product Preview
DE70321 Development and Demonstration Kit for CMX7032
Rx-only Block Diagram
VCO
discriminator
Synth
Ceramic
filter
SA58640
EE-
PROM
mixer
Xtal filter
x2
RF
input
Low-pass
filter
SW
LNA
spliter
19.2MHz
osc
CMX7032 FI-2.x
SAW filter
SAW filter
Xtal filter
/2
x3
mixer
SA58640
Ceramic
filter
Synth
discriminator
VCO
RS232 driver
To get the demoKit up and running as an AIS Rx-only Demonstrator, the following additional items are
required:
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Power Supply
162MHz antenna and cord with an SMA connector
PC with RS232 port
PC program such as ‘Ship Plotter’ [www.coaa.co.uk/shipplotter.htm] to display received data
RS232 connection cable
Optionally, a GPS receiver can be connected via an RS232 splitter if you wish to display your
actual location
© 2007 CML Microcircuits
2/4
Product Preview
DE70321 Development and Demonstration Kit for CMX7032
Tx-Rx Block Diagram
VCO
LM2332
(RF)
Ceramic
filter
discriminator
EE-
PROM
mixer
SA58640
Xtal filter
x2
MOD2
RF
input
Low-pass
filter
SW
LNA
spliter
19.2MHz
osc
CMX7032 FI-1.x
SAW filter
SAW filter
Xtal filter
/2
x3
mixer
SA58640
LM2332
(IF)
VCO
Ceramic
filter
discriminator
Synth
MOD1
C-Bus
Interface
/2
DAC0
Tx VCO
To get the demoKit up and running as an AIS Class B Transceiver Reference-Design Demonstrator,
the following additional items are required:
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Power Supply
162MHz antenna and cord with an SMA connector
Host Microcontroller
Customer application program
Connection to a GPS receiver
Connection to a chart display (optional)
RS232 port to chart plotter/PC
PA
Preliminary Information
The DE70321 provides a platform for the evaluation and demonstration of the CMX7032 using either
FI-1.x (Class B transceiver) or FI-2.x (Rx-only).
To use the DE70321 in Class B transceiver mode, a separate micro-controller is required to provide
control and perform the higher levels of the Class B protocol and user interfaces. The micro-
controller can also be used to load the Function Image
TM
(FI) into the CMX7032 via its C-BUS
interface. The PE0001 (see
www.cmlmicro.com
for more information) is available to provide the
basic controller functionality from a PC interface when using FI-1.x.
The DE70321 can also be used in Rx-only mode with FI-2.x. In this mode, typical operation is to use
the EEPROM on the DE70322 which will automatically load the FI at power-on.
NMEA-083HS data is then automatically output on the RS-232 port as soon as valid data has been
detected. A simple terminal application running at 38,400baud, 8 bits, no parity, no handshake will
display the information received.
If a suitable antenna for the AIS frequencies (162MHz) is connected, the received data can be used
with chart plotting software in order to display local AIS activity. This assumes that the test location
is within reasonable range of AIS equipped vessels.
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The choice of EEPROM or Host mode is available for FI-1.x using the ‘BOOTEN’ pins.
For FI-2x both EEPROM and RS232 modes are available.
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© 2007 CML Microcircuits
Product Preview
DE70321 Development and Demonstration Kit for CMX7032
Products
DE70321 Demonstration Kit
CMX7032 IC with FI-1.x and/or FI-2.x
CMX7032 package styles:
CMX7032L9
64-lead LQFP
CMX7032Q1
64-nolead VQFN
CML website
www.cmlmicro.com
Product overview
Product preview document
Datasheet
CML technical portal (My CML)
(authorisation required)
CMX7032 Datasheet + user manual
DE70321 DemoKit user manual
Evaluation kit design support (separate authorisation required)
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Full schematic diagrams
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Bill-of-materials (BOM)
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Gerber files
Application notes
FAQs
© 2007 CML Microcircuits
4/4
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