AN1386 STMicroelectronics, AN1386 Datasheet - Page 13

• Manufacturer Part Number: AN1386
• Description: USING THE DSM2180F3 WITH THE ANALOG DEVICES ADSP-2185
• Manufacturer: STMicroelectronics

SUMMARY
As DSPs continue to proliferate into markets such as communications, industrial, medical, signal condi-
tioning, and hand held test equipment, the DSM2180F3 and DSP form an ideal 2-chip solution with on-
chip PLD and I/O lines that are individually configured to perform any function required by the system de-
sign. Using the DSM2180F3 as an 8-bit boot loader in both high speed and low speed systems is an ideal
and rapid design alternative to a discrete solution. Inexpensive slower memory and PLDs integrated in the
DSM2180F3 now become both cost and performance effective.
Several features of the DSM2180F3 were used to expand the functionality of the ADSP-2185, including:
These changes have added to both the versatility and performance of the ADSP-2185.
APPENDIX
The Appendix contains the PSDsoft Express Design Assistant Summary listing all logic equations to show
how the DSM2180F3 is configured for the ADSP-2185 interface in order to implement the example in this
Application Note. Application Note AN1356 presents a step-by-step illustration of how to configure the
Flash DSM Family. Although AN1356 uses the 16-bit Flash PSD4235G2 in the example, the software and
procedure is the same for the 8-bit DSM2180F3.
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PROJECT
DEVICE
MCU/DSP
***********************************************************************
Pin Definitions:
================
Pin
Name
------------ ------------ ------------
adio0
adio1
adio2
adio3
adio4
adio5
adio6
adio7
adio8
adio9
adio10
adio11
adio12
In-System Programmable Flash memory.
JTAG-ISP to simplify manufacturing.
Expanded I/O.
Interfacing to external devices was easily accomplished by generating the required control signals in
the internal programmable PLD.
A quick and easy design prototype using PSDsoft Express.
: AN076
: DSM2180F3
: ADSP-218x
Signal
Name
a0
a1
a2
a3
a4
a5
a6
a7
a8
a9
a10
a11
a12
PSDsoft Express Version 7.10
Summary of Design Assistant
Pin
Type
Address line
Address line
Address line
Address line
Address line
Address line
Address line
Address line
Address line
Address line
Address line
Address line
Address line
DATE : 05/21/2001
TIME : 13:05:59
AN1386 - APPLICATION NOTE
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