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80960SB Datasheet

EMBEDDED 32-BIT MICROPROCESSOR WITH 16-BIT BURST DATA BUS

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80960SB
EMBEDDED 32-BIT MICROPROCESSOR
WITH 16-BIT BURST DATA BUS
s High-Performance Embedded Architecture s Built-in Interrupt Controller
— 16 MIPS* Burst Execution at 16 MHz
— 4 Direct Interrupt Pins
— 5 MIPS Sustained Execution at 16 MHz — 31 Priority Levels, 256 Vectors
s 512-Byte On-Chip Instruction Cache
— Direct Mapped
— Parallel Load/Decode for Uncached
Instructions
s Multiple Register Sets
— Sixteen Global 32-Bit Registers
— Sixteen Local 32-Bit Registers
— Four Local Register Sets Stored
On-Chip
— Register Scoreboarding
s Built-In Floating Point Unit
— Fully IEEE 754 Compatible
s Easy to Use, High Bandwidth 16-Bit Bus
— 25.6 Mbytes/s Burst
— Up to 16 Bytes Transferred per Burst
s 32-Bit Address Space, 4 Gigabytes
s 80-Lead Quad Flat Pack (EIAJ QFP)
— 84-Lead Plastic Leaded Chip Carrier
(PLCC)
s Pin Compatible with 80960SA
s Software Compatible with
80960KA/KB/CA/CF Processors
The 80960SB is a member of Intel’s i960® 32-bit processor family, which is designed especially for low cost
embedded applications. It includes a 512-byte instruction cache, an integrated floating-point unit and a built-in
interrupt controller. The 80960SB has a large register set, multiple parallel execution units and a 16-bit burst
bus. Using advanced RISC technology, this high performance processor is capable of execution rates in excess
of 5 million instructions per second*. The 80960SB is well-suited for a wide range of cost sensitive embedded
applications including non-impact printers, network adapters and I/O controllers.
FOUR
80-BIT FP
REGISTERS
80-BIT
FPU
SIXTEEN
32-BIT GLOBAL
REGISTERS
64- BY 32-BIT
LOCAL
REGISTER
CACHE
32-BIT
INSTRUCTION
EXECUTION
UNIT
INSTRUCTION
FETCH UNIT
512-BYTE
INSTRUCTION
CACHE
INSTRUCTION
DECODER
MICRO-
INSTRUCTION
SEQUENCER
MICRO-
INSTRUCTION
ROM
32-BIT
BUS
CONTROL
LOGIC
32-BIT
ADDRESS
16-BIT
BURST
BUS
Figure 1. The 80960SB Processor’s Highly Parallel Architecture
* Relative to Digital Equipment Corporation’s VAX-11/780 at 1 MIPS (VAX-11™ is a trademark of Digital Equipment
Corporation)
Intel Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an Intel product. No other circuit patent
licenses are implied. Information contained herein supersedes previously published specifications on these devices from Intel.
© INTEL CORPORATION, 1993
November 1993
Order Number: 272207-002
Intel Corporation
Intel Corporation



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