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Tiny Geode GX reference design supports embedded Linux

Dec 15, 2004 — by LinuxDevices Staff — from the LinuxDevices Archive — views

AMD has released a hardware/software reference design kit (RDK) for a tiny, low-power, single-board computer based on its Geode GX [email protected] processor. The Geode GX SOM-144 RDK includes Linux drivers, and targets applications where power, size, performance, and reliability are critical, AMD says.

(Click here for larger image)

The RDK is implemented in the 4 x 2.7 inch (100 x 68mm) “system on module” (SOM) form-factor popularized by Taiwan single-board computer (SBC) supplier Advantech.

GX SOM-144 Block diagram
(Click for larger image)

Key features and specifications of the Geode GX SOM-144 RDK, according to AMD, are:

  • Processor — Geode GX [email protected]
  • Memory — 128MB DDR SDRAM
  • Display — choice of either CRT or LCD (stuffing option)
  • Input/output ports — provided by Geode CS5535 companion device:
    • 4 USB 1.1 Host ports
    • IDE ATA 66
    • AC97 v 2.1 audio
    • 10/100 Ethernet (stuffing option)
    • PS2, serial, LPT ports
    • PCI
  • 2Mbit firmware hub boot Flash ROM in 32-pin PLCC socket
  • System clock generator
  • Onboard regulators for GX [email protected] and CS5535 core, VMEM and VREF
  • RTC battery
  • Support for Suspend-to-RAM
  • 2-wire serial remote diode CPU temperature measurement

The RDK includes schematics and documentation, plus a set of software driver packages for supported OSes. Further details on the RDK are available on AMD's website. Design files, including Bill of Materials (BOM) and layout files, are available from Advantech.

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