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Low-cost XScale PXA255 CPU module runs Linux

Oct 18, 2004 — by LinuxDevices Staff — from the LinuxDevices Archive — 42 views

CompuLab is shipping embedded Linux with a tiny low-cost processor module based on a 400MHz Intel PXA255. The ARMcore-GX measures 2.6 x 1.7 inches (66 x 44mm) and costs $51 in quantities of 1,000, and is available with a PC/104 carrier board.

Intel's PXA255, the predecessor to the PXA270 (Bulverde), was announced in June of 2003. It has since been used in Linux-based PDAs such as the Sharp Zaurus, Linux-based smartphones such as Samsung's SCH-i519, and even in a Linux-based mobile VoIP phone, the NexGen NexPaq. Processor modules based on the PXA255 have been marketed by Gumstix, Strategic Test, and In-Hand, while Arcom offers a PC/104 board based on the chip.

In addition to the PXA255 processor, CompuLab's ARMcore-GX is available with 16 to 64 MB of SDRAM, and between 1MB and 512MB of Flash. It also includes an LCD controller verified with a number of LCD modules, CompuLab says, including some supporting resolutions up to 800 x 600 (SVGA).


Top and bottom views of ARMcore CPU module
(Click either image to enlarge)

Additional features and peripherals include:

  • Power consumption under 1 watt
  • PCMCIA controller
  • GPIO lines
  • Serial, LPT, PS/2 keyboard and mouse ports, IrDA
  • Optional Ethernet, sound, touchscreen, hard disk, and USB ports

The module uses “CompuLab's aggregated module interface” (CAMI) to interface with carrier boards such as the PC/104-based ARMbase shown below. Also, it is compatible with older ARMcore modules, CompuLab says.


Top and bottom views of ARMbase PC/104 carrier board
(Click either image to enlarge)

The ARMcore module is available now, with base configurations as cheap as $51 in 1K quantities, CompuLab says. Also available are “ready-to-run” packages for Linux, Windows CE, and VxWorks.


 
This article was originally published on LinuxDevices.com and has been donated to the open source community by QuinStreet Inc. Please visit LinuxToday.com for up-to-date news and articles about Linux and open source.



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