描述 Description

The Aeroflex Circuit Technology “RISC TurboEngine” is a full military temperature range 64 bit, superpipelined RISC microprocessor with 1M Byte of secondary cache memory packaged in a high speed multichip module (MCM). The module contains the following components:

? (1) R4400SC/MC, a 3.3V powered RISC microprocessor.

? (11) SRAMs, 64K by 16.

? (3) Buffers and (3) Passive components for phase lock loop operation.

A Primary cache only version, the R4400PC is also available in the same package or 179 pin PGA

Electrical Features

? Low power dissipation, 3.3 Volt powered, 64 bit superpipelined RISC R4400 microprocessor

- Highly integrated CPU with integer unit, FPA, MMU, I&D cache

- Balanced integer & floating point performance

- Exploits 2-level instruction-level parallelism

- No issue restrictions on the instructions used

? Integer unit

- 32 entry, 64 bit wide register

- ALU

- Dedicated multiplier/divider

? Super pipelined FPA

- 32/16 entry 32/64 bit register file in a 32 bit mode

- 32 entry 64 bit register file in 64 bit mode

- Supports single and double precision.

- Supports ANSI/IEEE Standard 754-1985

? Memory management unit

- 48 entry TLB for fast virtual-to-physical address translation, software managed cntrl regstrs

- Programmable page sizes from 4K bytes to 16M bytes

- Total physical address space encompasses 64G bytes

- One pair of pages per TLB entry, each programable in size from 4K bytes to 16M bytes

? JTAG boundary scan capability for testing module interconnects.

? Internal 1M byte secondary cache SRAM configured as a split cache with instruction and data sections separate. Can be factory configured as unified.

? Provides 16 bit ECC on secondary cache data line, 7 bit ECC on tag line.

? Minimum clock rate 50 mHz with no wait states.

? +3.3 Volt P.S.(10 Watts Max.power dissipation) operation is standard.

Mechanical Features

? Small sizes, 2.5”L X 1.75”W X 0.175”H, 280 pin surface mount flat package or alternate 1.86”L X 1.86”W X 0.145”H, 179 pin PGA Package.

? Full military operating temperature range of -55 °C to +125 °C, case temperature

? Designed to meet military specifications, manufactured and tested in Aeroflex’s MIL-PRF-38534 certified facility.