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by DSP56005/D
Rev. 1
Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
DSP56005
Advance Information
24-bit Digital Signal Processor
The DSP56005 is an MPU-style general purpose Digital Signal Processor (DSP), composed of an
efficient 24-bit digital signal processor core, program and data memories, various peripherals, and
support circuitry. The 56000-Family-compatible DSP core is fed by a large program RAM, two in-
dependent data RAMs, and two data ROMs with sine and arc-tangent tables. Like the DSP56002,
the DSP56005 contains a Serial Communication Interface (SCI), Synchronous Serial Interface (SSI),
parallel Host Interface (HI), a 24-bit timer/ event counter, and On-Chip Emulation (OnCE ) port.
Features of the DSP56005 include the large on-chip program memory, five Pulse Width Modula-
tors (PWM), a watchdog timer, and an address decode pin for external peripherals. This combina-
tion of features, illustrated in Figure 1, makes the DSP56005 a cost-effective, high-performance
solution for many DSP and control applications, especially in high-performance motor control,
optical disk drives and audio processing.
16-bit Bus
24-bit Bus
14
1
6
3
15
Host
Pulse
24-bit
Sync.
Serial
Program
Memory
X Data
Memory
Y Data
Watch-
dog
Memory
Interface
(HI)
Width
Timer /
Event
Serial
(SSI)
or I/O
Comm.
(SCI)
4608 × 24 RAM
256 × 24 RAM
256 × 24 RAM
Modul.
Timer
96 × 24 ROM
256 × 24 ROM
256 × 24 ROM
(5)
(boot)
(sine)
(arc-tangent)
or I/O
Counter
or I/O
24-bit
External
Address
Bus
Address
PAB
Address
16
56000 DSP
Core
Generation
Unit
XAB
YAB
Switch
GDB
PDB
XDB
YDB
Internal
Data
External
Data
Data
24
Bus
Bus
Switch
Switch
Control
6
OnCE Port
Data ALU
Bus
Program
Decode
Program
Interrupt
Control
Address
24 × 24 + 56 → 56-bit MAC
Control
Controller
Generator
Clock
PLL
Two 56-bit Accumulators
Program Control Unit
Gen.
5
4
5
IRQ
Figure 1 DSP56005 Block Diagram
This document contains information on a product under development.
Motorola reserves the right to change or discontinue this product without notice.
MOTOROLA INC., 1995
For More Information On This Product,
Go to: www.freescale.com