參數(shù)資料
型號: ACT-5271SC-150F10I
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 1/11頁
文件大?。?/td> 237K
代理商: ACT-5271SC-150F10I
eroflex Circuit Technology – MIPS TurboEngines For The Future SCD5271SC REV A 2/2/01
Footprint Compatible with Aeroflex’s original ACT-4431SC 1MB Secondary Cache MCM in the
280 lead Ceramic Quad Flat Pack (CQFP)
QED RM5271 Dual Issue superscalar microprocessor - can issue one integer and one
floating-point instruction per cycle
Max system clock – 25MHz, Max Secondary Cache (SC) clock 75MHz, Max pipeline 150MHz
High performance system interface compatible with R4400
Internal PLL generates selectable 2x/3x SC bus speed operation vs external system bus
speed
Generates R4400 style system clocks
CPU cycle rate buffering FIFO implemented in FPGA
64-bit multiplexed system address/data bus for optimum price/performance
High performance write protocols maximize uncached write bandwidth
Operates at processor clock multipliers 2, 2.5 & 3
Integrated on-chip Primary Caches
32KB instruction - 2 way set associative
32KB data - 2 way set associative
Virtually indexed, physically tagged
Write-back and write-through on per page basis
Pipeline restart on first double for data cache misses
Integrated in-module Secondary Cache
2MB shared write-through
4-128Kx36 Synchronous SRAM and 1-64Kx18 Tag RAM
Integrated memory management unit
Fully associative joint TLB (shared by I and D translations)
48 dual entries map 96 pages
Variable page size (4KB to 16MB in 4x increments)
High-performance floating point unit
Single cycle repeat rate for common single precision operations and some double precision
operations
Two cycle repeat rate for double precision multiply and double precision combined
multiply-add operations
Single cycle repeat rate for single precision combined multiply-add operation
MIPS IV instruction set
Floating point multiply-add instruction increases performance in signal processing and
graphics applications
Conditional moves to reduce branch frequency
Index address modes (register + register)
Embedded application enhancements
Specialized DSP integer Multiply-Accumulate instruction and 3 operand multiply instruction
I and D cache locking by set
Optional dedicated exception vector for interrupts
Microprocessor with 2MB Secondary Cache
ACT-5271SC Multichip Module
Features
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