N80960SA-16 datasheet(6/39 Pages) INTEL

Part #	N80960SA-16

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

Download	39 Pages

Scroll/Zoom	100%

Manufacturer	INTEL [Intel Corporation]

Direct Link	http://www.intel.com

Logo

6 / 39 page

2

80960SA

1.1

Key Performance Features

The 80960SA architecture is based on the most

recent advances in microprocessor technology and

is grounded in Intel’s long experience in the design

and manufacture of embedded microprocessors.

Many features contribute to the 80960SA’s excep-

tional performance:

1. Large Register Set. Having a large number of

registers reduces the number of times that a

processor needs to access memory. Modern

compilers can take advantage of this feature to

optimize execution speed. For maximum flexi-

bility, the 80960SA provides thirty-two 32-bit

registers. (See Figure 2.)

2. Fast Instruction Execution. Simple functions

make up the bulk of instructions in most

programs so that execution speed can be

improved by ensuring that these core instruc-

tions are executed as quickly as possible. The

most frequently executed instructions — such

as

register-register

moves,

add/subtract,

logical operations and shifts — execute in one

to two cycles. (Table 1 contains a list of instruc-

tions.)

3. Load/Store Architecture. One way to improve

execution speed is to reduce the number of

times that the processor must access memory

to

perform

an

operation.

As

with

other

processors based on RISC technology, the

80960SA has a Load/Store architecture. As

such, only the LOAD and STORE instructions

reference

memory;

all

other

instructions

operate on registers. This type of architecture

simplifies instruction decoding and is used in

combination with other techniques to increase

parallelism.

4. Simple Instruction Formats. All instructions

in the 80960SA are 32 bits long and must be

aligned on word boundaries. This alignment

makes it possible to eliminate the instruction

alignment stage in the pipeline. To simplify the

instruction

decoder,

there

are

only

five

instruction formats; each instruction uses only

one format. (See Figure 3.)

5. Overlapped

Instruction

Execution.

Load

operations

allow

execution

of

subsequent

instructions to continue before the data has

been returned from memory, so that these

instructions

can

overlap

the

load.

The

80960SA manages this process transparently

to software through the use of a register score-

board. Conditional instructions also make use

of a scoreboard so that subsequent unrelated

instructions may be executed while the condi-

tional instruction is pending.

6. Integer Execution Optimization. When the

result of an arithmetic execution is used as an

operand in a subsequent calculation, the value

is sent immediately to its destination register.

At the same time, the value is put on a bypass

path to the ALU, thereby saving the time that

otherwise would be required to retrieve the

value for the next operation.

7. Bandwidth Optimizations. The 80960SA gets

optimal use of its memory bus bandwidth

because the bus is tuned for use with the on-

chip instruction cache: instruction cache line

size matches the maximum burst size for

instruction fetches. The 80960SA automatically

fetches four words in a burst and stores them

directly in the cache. Due to the size of the

cache and the fact that it is continually filled in

anticipation of needed instructions in the

program flow, the 80960SA is relatively insen-

sitive to memory wait states. The benefit is that

the 80960SA delivers outstanding performance

even with a low cost memory system.

8. Cache Bypass. If a cache miss occurs, the

processor fetches the needed instruction then

sends it on to the instruction decoder at the

same time it updates the cache. Thus, no extra

time is spent to load and read the cache.

Similar Part No. - N80960SA-16

Manufacturer	Part #	Datasheet	Description
Intel Corporation	N80960SB-16	382Kb / 38P	EMBEDDED 32-BIT MICROPROCESSOR WITH 16-BIT BURST DATA BUS

More results

Similar Description - N80960SA-16

Manufacturer	Part #	Datasheet	Description
Intel Corporation	EE80960SB16512	1Mb / 38P	EMBEDDED 32-BIT MICROPROCESSOR WITH 16-BIT BURST DATA BUS
Intel Corporation	80960SB	382Kb / 38P	EMBEDDED 32-BIT MICROPROCESSOR WITH 16-BIT BURST DATA BUS
Motorola, Inc	MC68008	927Kb / 36P	16-Bit Microprocessor With 8-Bit Data Bus
Intel Corporation	80960JD	2Mb / 61P	EMBEDDED 32-BIT MICROPROCESSOR
	A80960KA	2Mb / 41P	EMBEDDED 32-BIT MICROPROCESSOR
	80960JA	1Mb / 63P	EMBEDDED 32-BIT MICROPROCESSOR
	A80960JF-33	1Mb / 78P	EMBEDDED 32-BIT MICROPROCESSOR
	80960KA	861Kb / 43P	EMBEDDED 32-BIT MICROPROCESSOR
Digital Core Design	D68000	137Kb / 4P	16/32-bit Microprocessor
NXP Semiconductors	SCC68070	2Mb / 74P	16/32-bit microprocessor November 1990

More results

N80960SA-16 Datasheet(PDF) 6 Page - Intel Corporation

N80960SA-16 Datasheet(HTML) 6 Page - Intel Corporation

Similar Part No. - N80960SA-16

Similar Description - N80960SA-16

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Datasheet Download

Link URL