WC32P040-33P4M 查看數據表（PDF） - White Electronic Designs Corporation

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WC32P040-33P4M

32-Bit Nonmultiplexed External Address and Data Buses

White Electronic Designs Corporation 

White Electronic Designs

WC32P040-XXM

68040 FEATURES

Selection of Processor Speeds: 25, 33MHz

Military Temperature Range: -55°C to +125°C

Packaging

• 179 pin Ceramic PGA (P4)

• 184 lead Ceramic Quad Flatpack, CQFP (Q4)

6-Stage Pipeline, 68030-Compatible IU

68881/68882-Compatible FPU

Independent Instruction and Data MMUs

Simultaneously Accessible, 4-Kbyte Physical

Instruction Cache and 4-Kbyte Physical Data Cache

Low-Latency Bus Acceses for Reduced Cache Miss

Penalty

Multimaster/Multiprocessor Support via Bus

Snooping

Concurrent IU, FPU, MMU, and Bus Controller

Operation Maximizes Throughput

32-Bit, Nonmultiplexed External Address and Data

Buses with Synchronous Interface

User Object-Code Compatible with all Earlier 68000

Microprocessors

4-GigaByte Direct Addressing Range

DESCRIPTION

The WC32P040 is a 68000-compatible, high-performance,

32-bit microprocessor. The WC32P040 is a virtual

memory microprocessor employing multiple concurrent

execution units and a highly intergrated architecture that

provides very high performance in a monolithic HCMOS

device. It has a 68030-compatible integer unit (IU) and

two independent caches. The WC32P040 contains dual,

independent, demand-paged memory management units

(MMUs) for instruction and data stream accesses and

independent, 4-Kbyte instruction and data caches. The

WC32P040 has a 68881/68882-compatible floating-point

unit (FPU).

FIGURE 1 – BLOCK DIAGRAM

INSTRUCTION DATA BUS

CONVERT

EXECUTE

WRITE-

BACK

FLOATING-

POINT

UNIT

INSTRUCTION

FETCH

DECODE

EA

CALCULATE

EA

FETCH

EXECUTE

WRITE-

BACK

INTEGER

UNIT

INSTRUCTION

ATC

INSTRUCTION

CACHE

INSTRUCTION

MMU/CACHE/SNOOP

CONTROLLER

INSTRUCTION MEMORY UNIT

DATA MEMORY UNIT

DATA

MMU/CACHE/SNOOP

CONTROLLER

INSTRUCTION

ADDRESS

B

U

S

C

O

N

T

R

O

L

DATA

ADDRESS

L

E

R

DATA

ATC

DATA

CACHE

ADDRESS

BUS

DATA

BUS

BUS

CONTROL

SIGNALS

JJuulyly19199898

OPERAND DATA BUS

1

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

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