PRELIMINARY
May 1991
NS32GX32-20/NS32GX32-25/NS32GX32-30
High-Performance 32-Bit Embedded System Processor
General Description
The NS32GX32 is a high-performance 32-bit embedded
Features
Y
Software compatible with the Series 32000 family
Y
system processor in the Series 32000 family. It is software
compatible with the previous microprocessors in the family
but with a greatly enhanced internal implementation.
32-bit architecture and implementation
É
Y
4-GByte uniform addressing space
Y
4-Stage instruction pipeline
Y
The NS32GX32 integrates more than 320,000 transistors
fabricated in a 1.25 mm double-metal CMOS technology.
The advanced technology and mainframe-like design of the
device enable it to achieve peak performance of 15 million
instructions per second.
512-Byte on-chip instruction cache
Y
1024-Byte on-chip data cache
Y
High-performance bus
Ð Separate 32-bit address and data lines
Ð Burst mode memory accessing
Ð Dynamic bus sizing
The high-performance specifications are the result of a four-
stage instruction pipeline, on-chip instruction and data
caches, and a significantly increased clock frequency. In ad-
dition, the system interface provides optimal support for ap-
plications spanning a wide range, from low-cost, real-time
controllers to highly sophisticated, embedded systems.
Y
Floating-point support via the NS32381
Y
1.25 mm double-metal CMOS technology
Y
175-pin PGA package
In addition to generally improved performance, the
NS32GX32 offers much faster interrupt service and task
switching for real-time applications.
Block Diagram
TL/EE/10253–1
FIGURE 1
Series 32000É and TRI-STATEÉ are registered trademarks of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
TL/EE10253
RRD-B30M105/Printed in U. S. A.