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DE70321
Development and Demonstration Kit
September 2007/2
. . . . . . for the CMX7032 Marine AIS Class B Processor IC
Features
* * * *
*
Features (Continued)
* * * * 19.2MHz Reference for 9600bps data rate Dual Channel Rx-only operation On-board EEPROM RS232 NMEA-0183 Interface for hostless operation Flexibility built on FirmASIC(R) technology
Class B AIS Transceiver Technology Demonstrator Designed to meet IEC62287 2 Watt Tx operation Dual, independent GMSK receivers C-BUS Interface to host C
*
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 ImageTM 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 ImageTM FI-1.x allows full host control over all CMX7032 functions whereas Function ImageTM 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.
(c) 2007 CML Microcircuits 1/4
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DE70321 Development and Demonstration Kit for CMX7032
Rx-only Block Diagram
VCO discriminator Synth Ceramic filter SA58640 EEPROM
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: * * * * * * 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
(c) 2007 CML Microcircuits
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DE70321 Development and Demonstration Kit for CMX7032 Tx-Rx Block Diagram
VCO LM2332 (RF) Ceramic filter discriminator EEPROM
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: * * * * * * * 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 microcontroller can also be used to load the Function ImageTM (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. * 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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(c) 2007 CML Microcircuits
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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) * Full schematic diagrams * Bill-of-materials (BOM) * Gerber files Application notes FAQs
(c) 2007 CML Microcircuits
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