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Compact XScale SBC conserves power, runs Linux

May 17, 2005 — by LinuxDevices Staff — from the LinuxDevices Archive — views

Applied Data Systems (ADS) will soon ship an upgraded version of its compact XScale SBC based on an Intel PXA270 processor. The BitsyXb, which supports embedded Linux, incorporates five power management modes that minimize power consumption in handheld, wearable, and unmanned applications, according to the company.

(Click here for larger image of the BitsyX)

The BitsyXb, based on a 520 MHz Intel PXA270 processor, is plug-compatibile with its PXA255-based predecessor, the BitsyX (shown above). Power saving strategies include dynamic variable speed and voltage regulation, which are supported by the company's ADSmartPower software, according to ADS.

ADS lists the following key features and specifications for the BitsyXb:

  • Processor — Intel PXA270 at 520 MHz
  • Memory:
    • SDRAM — up to 128 MB
    • Flash — up to 64 MB synchronous or 32 MB asynchronous
    • 128 KB of EPROM as a boot device
  • Display:
    • Up to 1024×768 color LCD interface driven by the PXA270
    • Backlight connector with software controlled PWM
    • 4- or 5-wire resistive touchscreen interface (Burr Brown chip, 10 bits)
  • Expansion:
    • One PCMCIA Type II
    • “Personality board” supplied with development system includes connectors for I/O ports and one of the following:
      • CompactFlash (Type II) connector
      • Expansion bus — 16-bit data/11-bit address
      • Ethernet 10/100bT (alternately implemented via PCMCIA)
  • I/O ports:
    • USB host and slave
    • Three serial ports
    • 10 digital I/O lines
    • SPI port
    • I2C bus with master controller
    • ADSmartIO — 9 configurable input/outputs, optionally configurable as:
      • 5×4 keypad/touchscreen
      • 4 analog inputs + 5 digital I/O's
      • 9 digital I/O's
    • AC97, 16 bit stereo codec:
      • 2x1W stereo audio amplifier
      • Stereo speaker output
      • Stereo microphone input
  • Power consumption — less than 1 watt in operation at 5V
  • Dimensions — 3 x 5 inches

Availability

The BitsyXb and its development environment are expected to be available in the second quarter of this year, according to the company. In addition to supporting Linux, the company says the SBC will also run Windows CE 4.2.


 
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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