NS32FX16-15 National, NS32FX16-15 Datasheet

NS32FX16-15

Manufacturer Part Number

NS32FX16-15

Description

Imaging/Signal Processor

Manufacturer

National

Datasheet

1.NS32FX16-15.pdf (88 pages)

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C 1995 National Semiconductor Corporation

NS32FX16-15 NS32FX16-20 NS32FX16-25

Imaging Signal Processor

General Description

The NS32FX16 is a high-performance 32-bit member of the

Series 32000 EP

Processors

Group 3 Facsimile Applications Data Modems Voice Mail

Systems Laser Printers or any combination of the above

It can perform all the computations and control functions

required for a stand-alone Fax system a PC add-in Fax

Data Modem card or a Laser Fax system

It also meets the performance requirements to implement

9600 and 7200 bps modems complying with CCITT V 29

and V 27 standards

The NS32FX16 provides a 16 Mbyte Linear external ad-

dress space and a 16-bit external data bus

The CPU core which is the same as that of the NS32CG16

incorporates a 32-bit ALU and instruction pipeline and an

8-byte prefetch queue

Also integrated on-chip with the CPU are a DSP Module and

a 384-byte RAM Array The DSP Module executes vector

operations on complex variables and is specially designed

to enhance performance in modem applications The vector

operations can also be used to efficiently implement FIR

Filters and other DSP primitives The on-chip RAM Array is

used to store the coefficients of the various filters and can

be accessed by both the CPU and the DSP Module

The NS32FX16 capabilities can be expanded by using an

external floating point unit (FPU) which directly interfaces to

the NS32FX16 using the slave protocol The CPU-FPU clus-

ter features high speed execution of the floating-point in-

structions

Block Diagram

Series 32000 is a registered trademark of National Semiconductor Corporation

and Embedded System Processors

specifically optimized for CCITT Group 2 and

family of National’s Embedded System

are trademarks of National Semiconductor Corporation

TL EE10818

The NS32FX16 highly-efficient architecture combined with

the NS32CG16 graphics instructions and the high-perform-

ance vector operation capability makes the device the ideal

choice for Postscript

Features

Software compatible with the Series 32000 EP

processors

Designed around the CPU core of the NS32CG16

32-bit architecture and implementation

On-chip DSP Module for high-speed DSP operations

Special support for graphics applications

384-byte on-chip RAM array

On-chip clock generator

Floating-point support via the NS32081 or NS32181

Optimal interface to large memory arrays via the

NS32CG821 and the DP84xx family of DRAM control-

lers

Power save mode

High-speed CMOS technology

68-pin PLCC package

18 graphics instructions

Binary compression expansion capability for font

storage using RLL encoding

Pattern magnification

Interface to an external BITBLT processing units for

fast color BITBLT operations

and Fax applications

PRELIMINARY

RRD-B30M115 Printed in U S A

TL EE 10818– 67

July 1991

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