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WC32P040-XQ4M Datasheet

  • WC32P040-XQ4M

  • 32-Bit, Nonmultiplexed External Address and Data Buses with ...

  • 23頁

  • WEDC

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White Electronic Designs
68040 FEATURES
Selection of Processor Speeds: 25, 33MHz
Military Temperature Range: -55擄C to +125擄C
Packaging
鈥?179 pin Ceramic PGA (P4)
鈥?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
WC32P040-XXM
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 鏗俹ating-point
unit (FPU).
FIGURE 1 鈥?BLOCK DIAGRAM
INSTRUCTION DATA BUS
INSTRUCTION
ATC
INSTRUCTION
CACHE
INSTRUCTION
ADDRESS
B
U
S
C
O
N
T
R
O
L
L
E
R
INSTRUCTION
FETCH
CONVERT
DECODE
EA
CALCULATE
EXECUTE
EA
FETCH
EXECUTE
WRITE-
BACK
FLOATING-
POINT
UNIT
WRITE-
BACK
INTEGER
UNIT
INSTRUCTION
MMU/CACHE/SNOOP
CONTROLLER
INSTRUCTION MEMORY UNIT
ADDRESS
BUS
DATA
BUS
DATA MEMORY UNIT
DATA
MMU/CACHE/SNOOP
CONTROLLER
DATA
ADDRESS
BUS
CONTROL
SIGNALS
DATA
ATC
DATA
CACHE
OPERAND DATA BUS
July 1998
July 1998
1
White Electronic Designs Corporation 鈥?(602) 437-1520 鈥?www.wedc.com

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