Motorola's DSP56002 Evaluation Module (EVM) is an excellent platform for the radio amateur
and experimenter alike to implement digital signal processing (DSP) techniques. The DSP56002EVM was discontinued by Motorola, but EVMs do appear on eBay or amateur radio for sale web pages.
The EVM is very attractive because of its low-cost, abundant radio application
software, and flexibility that make it an excellent DSP experimenter's platform.
In 1998 TAPR designed a radio interface kit with enclosure for the EVM called the EVM-RI. It provides the necessary circuitry to interface the EVM to a transceiver and can be programmed as a KISS modem. The EVM-RI is based on Johan Forrer's, KC7WW, radio interface described in his QEX article, Using the Motorola DSP56002EVM for Amateur Radio DSP Projects.
A FULL KIT IS NO LONGER AVAILABLE
This partial kit provides:
- Bare front and rear panel PCB.
- Enclosure with drilled and labeled front and rear panels.
A Motorola DSP56002EVM (DSP) board IS NOT INCLUDED
Ordering Information
The price for the DSP56002 EVMRI Partial Kit is:
$ 27 US for members of TAPR
$ 30 US for non-members
+ shipping/handling if applicable.
(Place Web Order)
Shipping and Handling
Shipping and Handling within the US will be by USPS Priority Mail.New International Shoppers will be contacted by the TAPR office with a quote on the shipping costs to your country. Returning customers are expected to be aware of international costs, ask if unsure. TAPR uses insured Priority Mail International, unless the purchaser requires something else.
Documentation
Assembly Manual
EVM Radio Interface Schematic Diagrams (Updated 2/21/98)
Schematic 1 (PDF 20KB)
Schematic 2 (PDF 8 KB) DSP56002EVM Schematic Diagrams
Support
Questions concerning the construction and operation of the EVM Radio Interface are discussed on the DSP list. To subscribe, click here to reach the TAPR listserver.
TAPR kits can be complex depending on the kitting experience of each builder. We don't think you will have trouble with the interface kit, but it does require some knowledge and experience to successfully go from a kit to a finished, usable unit, depending on the mode of operations. For data radio applications (i.e. 9600 baud FSK), special modifications must be made to your radio for proper operation of the EVM interface. In addition, the interface kit requires that you have a Motorola EVM56002 Interface unit. These can be purchased from several electronic distributors (see web page).
Pictures of the Kit
EVM Radio Interface Kit
Rear Panel
The image left shows the enclosure with the top off and the EVM mounted inside
from the rear.
Front Panel
Layout of indicators and silk screen for the front panel. Each of the LEDs (except
Pwr) are programmable.
Acknowledgements
The design of the radio interface for the Motorola DSP56002EVM is based on Johan Forrer's, KC7WW, original design (see evmpcb.pdf last revised February 1996).
In February 1997, Douglas Braun, N1OWU, released his software suite for the EVM and revised his interface to be more flexible than Johan's. The TAPR interface is a happy medium between Johan's and Doug's design. The goal is to make the interface flexible for past and present code developed for the EVM and to create a flexible programming interface for future programmers.
The following people made this kit successful:
Steve Bible, N7HPR
Project Manager, Prototype builder
Lyle Johnson WA7GXD PCB design and Prototype
builder
Johan Forrer KC7WW Prototype builder
Tim Baggett, AA5DF Prototype
builder
Douglas Braun, N1OWU Prototype builder
Rich Mulvey, AA2YS Documentation
Greg Jones, WD5IVD Assistant Project Manager
Joe Borovetz, WA5VMS Part
Procurement
Mark Hammond, KC4EBR Beta Tester
Bdale Garbee, N3EUA Beta
Tester
John Koster, W9DDD PCB Liaison, Beta Tester
Keith Justice, KF7TP
Beta Tester
John Ackerman, N8UR Beta Tester
Frank Perkins, WB5IPM Beta
Tester
Steven Taft, KA1WX Beta Tester
David Borden, K8MMO Beta Tester
Louis Cobet, K6MDH Beta Tester
Jim Lynch, K4GVO Beta Tester
L.J. Shepherd,
K6OYY Beta Tester
