Family Members; Introduction To Digital Signal Processing; Figure 1-3 Example Of Chip Built Around The Dsp56800 Core - Motorola DSP56800 Manual

1.1.3

Family Members

The DSP56800 core processor is designed as a core processor for a family of Motorola DSPs. An example
of a chip that can be built with this core is shown in Figure 1-3 on page 1-5.
16
ADR
16
DATA
Figure 1-3. Example of Chip Built Around the DSP56800 Core
1.2

Introduction to Digital Signal Processing

DSP is the arithmetic processing of real-time signals sampled at regular intervals and digitized. Examples
of DSP processing include the following:
• Filtering
• Convolution (mixing two signals)
• Correlation (comparing two signals)
• Rectification, amplification, and transformation
Figure 1-4 on page 1-6 shows an example of analog signal processing. The circuit in the illustration filters
a signal from a sensor using an operational amplifier and controls an actuator with the result. Since the
ideal filter is impossible to design, the engineer must design the filter for acceptable response by
considering variations in temperature, component aging, power-supply variation, and component accuracy.
The resulting circuit typically has low noise immunity, requires adjustments, and is difficult to modify.
16Kx16
ROM
DSP56800
16-Bit
Ext. Bus
DSP
Interface
Core
PLL
JTAG
Introduction
Introduction to Digital Signal Processing
1Kx16
XRAM
Watchdog
& Real-time
Timers
Serial
GPIO
IRQA
IRQB
AA0002
1-5