Concept

XIO

Summary
XIO is a packet-based, high-performance computer bus employed by the SGI Origin 2000, Octane, Altix, Fuel and Tezro machines. The XIO forms a bus between high-performance system devices and the memory controller. XIO is usually used in a star topology, using a router ASIC called Crossbow (Xbow) to connect up to eight fully symmetrical devices in a system (one of them is usually the memory controller / CPU bridge, called HEART in Octane or Hub in Origin). Other devices known to have XIO interfaces are:
  • BRIDGE: XIO to PCI-64 bridge (Octane, Origin)
  • XBRIDGE: XIO to PCI-X bridge (Altix)
  • HQ4: command processor of ImpactSR cards (Octane)
  • KTOWN: frontend for InfiniteReality2 cards (Onyx, Origin variation)
  • XC: Crosstown converter
  • BUZZ: "OpenGL-on-a-Chip" ASIC used in ODYSSEY/VPro graphics (V6/V8/V10/V12)
The XIO employs two source-synchronous channels (one in each direction), each 8 or 16 bits wide. They are clocked at 400 MHz to achieve peak rates of 800 MB/s (i.e. in
About this result
This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.
Related publications

Loading

Related people

Loading

Related units

Loading

Related concepts

Loading

Related courses

Loading

Related lectures

Loading