Implementation of DSP Based CNC Machine supporting Card
for interfacing high & low speed peripherals

ABSTRACT:

Digital signal processing uses special dedicated processors to
convert and interpret digital signals at very high speeds.
Digital Signal processing technology is enabling cost effective
and energy efficient control system design. The performance of
a DSP Architecture allows an intelligent approach to reduce the
complete system costs of digital motion control applications
using cheaper electrical motors, fewer sensors, and smaller
sizes of EMI filters. To provide also a cost optimal solution
Texas Instruments (TI") developed a single chip solution
combining the features of a Micro controller and the
performance advantages of a DSP core. This new - so-called
"DSP-Controller" delivers the real-time MIPS and the tightly
integrated peripherals to implement optimal control algorithms
with no cost penalty.

The incredible power of DSP for specific tasks is illustrated by
the fact that a DSP chip can execute a multiply-accumulate
(MAC) instruction, a fundamental operation, in a single clock
cycle. This same operation on a current Pentium processor chip
takes 11 clock cycles. Obviously a 120-MHz Pentium will still
take nearly four times as long as a 40-MHz DSP processor.

This paper deals with the new DSP-Controller and its low
speed & high speed interfacing applications.