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TS68882 Datasheet(PDF) 1 Page - ATMEL Corporation

No. de pieza TS68882
Descripción Electrónicos  CMOS Enhanced Floating-point Co-processor
Download  43 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

TS68882 Datasheet(HTML) 1 Page - ATMEL Corporation

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Features
Eight General-purpose Floating-point Data Registers, Each Supporting a Full 80-bit
Extended Precision Real Data Format (a 64-bit Mantissa Plus a Sign Bit, and a 15-bit
Signed Exponent)
A 67-bit Arithmetic Unit to Allow Very Fast Calculations with Intermediate are Precision
Greater than the Extended Precision Format
A 67-bit Barrel Shifter for High-speed Shifting Operations (for Normalizing etc.)
Special-purpose Hardware for High-speed Conversion Between Single, Double, and
Extended Formats and the Internal Extended Format
An Independent State Machine to Control Main Processor Communication for
Pipelined Instruction Processing
Forty-six Instructions, Including 35 Arithmetic Operations
Full Conformation to the IEEE 754 Standard, Including All Requirements and
Suggestions
Support of Functions Not Defined by the IEEE Standard, Including a Full Set of
Trigonometric and Transcendental Functions
Seven Data Type Types: Byte, Word and Long Integers; Single, Double, and Extended
Precision Real Numbers; and Packed Binary Coded Decimal String Real Numbers
Twenty-two Constants Available In The On-chip ROM, Including
π,e,and Powers of 10
Virtual Memory/Machine Operations
Efficient Mechanisms for Procedure Calls, Context Switches, and Interrupt Handling
Fully Concurrent Instruction Execution with the Main Processor
Fully Concurrent Instruction Execution of Multiple Floating-point Instructions
Use with any Host Processor, on an 8-, 16- or 32-bit Data Bus
Available in 16.67, 20, 25 and 33 MHz for T
c from -55°C to +125°C
V
CC =5V ± 10%
Description
The TS68882 enhanced floating-point co-processor is a full implementation of the
IEEE Standard for Binary Floating-Point Arithmetic (754) for use with the THOMSON
TS68000 Family of microprocessors. It is a pin and software compatible upgrade of
the TS68881 with optimized MPU interface that provides over 1.5 times the perfor-
mance of the TS68881. It is implemented using VLSI technology to give systems
designers the highest possible functionality in a physically small device.
Intended primarily for use as a co-processor to the TS68020/68030 32-bit micropro-
cessor units (MPUs), the TS68882 provides a logical extension to the main MPU
integer data processing capabilities. It does this by providing a very high performance
floating-point arithmetic unit and a set of floating-point data registers that are utilized
in a manner that is analogous to the use of the integer data registers. The TS68882
instruction set is a natural extension of all earlier members of the TS68000 Family, and
supports all of the addressing modes of the host MPU. Due to the flexible bus inter-
face of the TS68000 Family, the TS68882 can be used with any of the MPU devices of
the TS68000 Family, and it may also be used as a peripheral to non-TS68000
processors.
Screening/Quality
This product could be manufactured
in full compliance with either:
MIL-STD-883 Class B
DESC 5962-89436
or According to ATMEL-
Grenoble Standards
R suffix
PGA 68
Ceramic Pin Grid Array
F suffix
CQFP 68
Ceramic Quad Flat Pack
CMOS
Enhanced
Floating-point
Co-processor
TS68882
Rev. 2119A–HIREL–04/02


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