page_title: XScale
section_title: PXA3xx
hierarchical_section_title: XScale / Processor families / PXA / PXA3xx
caption_attribution_description: Toradex Colibri PXA290 (Monahans) SODIMM Module [1]
context_page_description: XScale is a microarchitecture for central processing units initially designed by Intel implementing the ARM architecture instruction set. XScale comprises several distinct families: IXP, IXC, IOP, PXA and CE, with some later models designed as SoCs. Intel sold the PXA family to Marvell Technology Group in June 2006. Marvell then extended the brand to include processors with other microarchitectures, like ARM's Cortex.
  The XScale architecture is based on the ARMv5TE ISA without the floating point instructions. XScale uses a seven-stage integer and an eight-stage memory super-pipelined microarchitecture. It is the successor to the Intel StrongARM line of microprocessors and microcontrollers, which Intel acquired from DEC's Digital Semiconductor division as part of a settlement of a lawsuit between the two companies. Intel used the StrongARM to replace its ailing line of outdated RISC processors, the i860 and i960.
  All the generations of XScale are 32-bit ARMv5TE processors manufactured with a 0.18 μm or 0.13 μm process and have a 32 KB data cache and a 32 KB instruction cache. First and second generation XScale multi-core processors also have a 2 KB mini data cache.
context_section_description: In August 2005 Intel announced the successor to Bulverde, codenamed Monahans.
  They demonstrated it showing its capability to play back high definition encoded video on a PDA screen.
  The new processor was shown clocked at 1.25 GHz but Intel said it only offered a 25% increase in performance (800 MIPS for the 624 MHz PXA270 processor vs. 1000 MIPS for 1.25 GHz Monahans). An announced successor to the 2700G graphics processor, code named Stanwood, has since been canceled. sd features of Stanwood are integrated into Monahans. For extra graphics capabilities, Intel recommends third-party chips like the Nvidia GoForce chip family.
  In November 2006, Marvell Semiconductor officially introduced the Monahans family as Marvell PXA320, PXA300, and PXA310. PXA320 is currently shipping in high volume, and is scalable up to 806 MHz. PXA300 and PXA310 deliver performance "scalable to 624 MHz", and are software-compatible with PXA320.
caption: Toradex Colibri XScale Monahans PXA290 SODIMM-module (Prototype Of Marvell PXA320 SODIMM-module)
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