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XScale™ (PXA255, PXA27x, IXP42x, IXP46x) Microcontrollers - Architectural Overview of the 32-Bit Microcontroller

The Intel® XScale ™ embedded microcontroller core is an ARM® V5TE compliant microprocessor. It is a high performance and low-power device that leads the industry in MIPS/mW.

UDE - Universal Debug Engine - Debugger and Emulator for XScale

UDE - Universal Debug Engine - is a flexible debug platform with Multi-core debugging.

Special feature support:

Supported Microcontrollers by Universal Debug Engine

  • Marvell/Intel PXA255, PXA270
  • Marvell/Intel IXP420, IXP421, IXP422, IXP423, IXP425, IXP455, IXP460, IXP465

XScale™ Architecture Feature Overview

  • 32/16-bit RISC architecture ( ARM v5TE )
  • 32-bit ARM V5T instruction set for maximum performance and flexibility
  • ARM DSP-Enhanced instruction set and Coprocessor
  • Memory Management Unit (MMU)
  • enhanced Thumb instruction set for increased code density
  • Both big and little endian support
  • Unified bus interface, 32-bit data bus carries both instructions and data
  • 8-, 16-, and 32-bit Data Types
  • Seven-stage pipeline
  • 4 GBytes Linear Address Space
  • 32-bit ALU and high-performance multiplier, Multiply/Accumulate (MAC)
  • Fully static operation
  • Memory Management Unit (MMU) with caching support
  • High performance features:
    • Instruction and Data cache
    • Various data cache allocation policies which can be configured differently for each application
    • A write buffer
    • Write-back caching
    • Cache locking
    • Branch Target Buffer
  • Power Management and Low Power Consumption
  • Peripherals: Clock, DMA, LCD, I²C, UART, Real-time clock, PWM, Interrupt

Trademarks: ARM, EmbeddedICE and Thumb are registered trademarks of ARM Limited. XScale is a registered trademark of Intel Corporation. All other brands or product names are the property of their respective holders.

 

 

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