High Quality Content by WIKIPEDIA articles! 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. The XIO employs two source-synchronous channels, each 8 or 16 bits wide. They are clocked at 400 MHz to achieve peak rates of 800 MB/s. Each of the devices can utilize the full bandwidth, as the XBow router prevents collisions by being able to route between any two points. Transfer is organized into micropackets. These contain a total of 128 bits of data and 32 bits of control. The control information encapsulates an 8 bit sideband, sequence numbers and check bits.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.