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参数资料
| 型号： | TC86R4400 |
| 厂商： | Toshiba Corporation |
| 英文描述： | RISC High Performance Microprocessor(精简指令集高性能微处理器) |
| 中文描述： | 高性能微处理器的RISC（精简指令集高性能微处理器） |
| 文件页数： | 1/4页 |
| 文件大小： | 90K |
| 代理商： | TC86R4400 |
TOSHIBA
Toshiba TC86R4400
MIPS RISC High Performance
Microprocessor
Product Brief
T O S H IB A A M E R IC A E L E C T R O N IC C O M P O N E N T S , IN C
.
1
Toshiba is the leading silicon vendor licensed to develop, manu-
facture and sell MIPS
Reduced Instruction Set Computing
(RISC)-based products. Toshibas R4400-based systems will run
a choice of advanced operating systems, such as UNIX
Windows NT
from Microsoft Corporation.
Toshiba is the key supplier of MIPS Reduced Instruction Set
Computing (RISC) technology for the computer system and
embedded control markets. From the introduction of the
R2000
, Toshiba has been a foundry for MIPS RISC-based
products. Since then, the R3000, R4000 and R4400 processors
have been gaining wide acceptance and have been designed into a
variety of products by industry-leading companies.
In 1991, Toshiba delivered one of the Trst R4000 compo-
nents, displaying its strength in advanced process technology
applied to high-end microprocessors. With a leading combination
of highest overall performance, 64-bit architecture and design
exibility, Toshibas R4400 establishes the standard for RISC
microprocessors through the end of this decade.
a
a
and
R4400 Performance
The single-chip R4400 delivers the high performance necessary
for a wide range of applications while maintaining full software
compatibility with previous generations of MIPS microproces-
sors. Its scalable performance makes it possible to design the
R4400 into applications ranging from embedded controllers, such
as those in satellites and telephone switches, to computers rang-
ing from laptops to mainframe-class servers. In designing the
R4400, the basic components of the central CPU subsystem,
including integer processor, oating point co-processor, memory
management unit and primary cache, were integrated onto a sin-
gle chip. In addition, the R4400 includes full multiprocessing
capabilities, superpipelining, and control and management facili-
ties for external secondary cache.
The R4400 is offered in two variants tailored for multiple
price/performance points:
￥ The R4400SC supports high-performance uniprocessor
designs with secondary cache
￥ The R4400MC is the full multiprocessing version of the prod-
uct and supports both secondary cache and cache coherence
mechanisms necessary for synchronizing multiple processors
The R4400 family provides a balanced mix in integer and
oating point performance. Through superpipelining, RISC opti-
mization techniques and on-chip integration, high integer perfor-
mance is achieved for applications such as databases, graphics,
spreadsheets and word processing. Superpipelining increases
throughput by putting more instructions into the pipeline at the
same time. RISC optimization techniques streamline processing
operations by minimizing interruptions to the steady progress of
the pipeline. In addition, on-chip integration takes more function-
ality off the board and puts it directly onto the processor to
shorten paths and reduce lengthy accesses to main memory.
In the R4400 design, superpipelining requires less circuitry
than other multiple-instruction issue techniques, so it leaves more
room on the chip for other functions. Further, superpipelining
provides greater integer processing than most other techniques
whose beneTts are conTned mainly to oating-point operations.
This results in higher overall performance from integer and oat-
ing-point units, a desirable characteristic in a microprocessor that
is to have broad-based acceptance and applications.
The R4400 takes advantage of optimization techniques built
into the MIPS compiler software to run applications faster than
other RISC processors at similar or higher clock speeds. With
RISC, the microprocessor design is streamlined by eliminating
less frequently used instructions and circuitry, shifting the bal-
ance of computing from hardware to compiler software. Compil-
ers offered by MIPS have been simultaneously developed and
integrated with the R4400 from the start to deliver maximum per-
formance.
Table 1. TC86R4400SC/MC Options
Internal Frequency
External Frequency
Voltage
Temperature
Internal Cache
Package (PGA)
150 MHz
75 MHz
3.3V
70
°
C
16KI + 16KD
447-pin
175 MHz
87 MHz
3.3V
70
°
C
16KI + 16 KD
447-pin
200 MHz
100 MHz
3.3V
70
°
C
16KI + 16 KD
447-pin
200 MHz
100 MHz
3.3V
85
°
C
16KI + 16 KD
447-pin
200 MHz
100 MHz
3.45V
70
°
C
16KI + 16 KD
447-pin
250 MHz
125 MHz
3.45V
70
°
C
16KI + 16 KD
447-pin
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