Xscale

Xscale is an ARM architecture based on ARM kernel, v5TE, Intel company by the development, in architecture based on extended for ever also retained the decentralization, so products has been widely used. Compared to the ARM processor XScale power consumption, lower, at the same time, the system better scalability core frequency also get improved, reached 400Mhz even higher. This processor also support the efficient communication instructions, can and also architecture processors reached between transmission with high speed. One major expansion is wireless MMX, this is a 64-bit SIMD instruction set, the Xscale processor in the new integrated SIMD coprocessor in there. These instruction set can effectively accelerate video, 3D image, audio and other SIMD traditional elements processing.

introduction

Based on the Xscale core processor mainly includes:

Intel PXA25x

Intel PXA26X

Intel PXA27X

In 2006, XScale was sold to Marvell.

Application processor PXA series

PXA25x

PXA250

PXA255

PXA26X

PXA26X

PXA27X

PXA27x series (internal code Bulverde) includes PXA270 and PXA271 - PXA272 several processors. This upgrade is a huge XScale series processors ascension. PXA270 has the following kinds of running frequency: MHz, 416 312 MHz, 520 MHz. For package no built-in memory alone, also can run CPU version of high frequency in 624 MHz. PXA271 can run in 312 MHz or 416 MHz, in the same package has integrated 32 MiB 16 stacked StrataFlash flash and 32 MiB 16 SDRAM memory. PXA272 can run in 312 MHz, 416 MHz or 520 MHz, and built-in 64 MiB 32-bit stacked StrataFlash flash memory.

Intel also PXA27x series joined in the new technology:

Mobile version of the operating system can SpeedStep: according to the operation needs to adjust to save energy and CPU speed. Mobile MMX SIMD instructions: 43 a new MMX consists of a complete set of instruction set and some SSE instruction concentration of integer instructions. Mobile MMX provides 16 additional 64-bit registers, and can be as double 32-bit to handle, like four 16 halfwords or eight eight bytes. This ability can accelerate chips, encoding and decoding speed increase multimedia and the performance of the game. Additional external design: such as USB - Host interface and camera interface. Integrated an SRAM cache, 256KB decreasing power and delay. PXA27x series released in April 2004. In addition the Intel also released 2700G embedded graphics coprocessor.

PXA3xx (Monahans)

In August 2005, the next generation of Intel released PXA27X products, code-named Monahans CPU. In November, 2006, Marvell PXA310 PXA300 company released, PXA320.

AutoCad

At AutoDesk AutoCad, the product of the company scale for scaling command, this command options "xscale" says on the X axis direction zoom.