This standard defines the mechanical, electrical, timing, and protocol requirements of the SCSI parallel interface to allow conforming SCSI devices to inter-operate. The SCSI parallel interface is a local I/O bus that may be operated over a wide range of transfer rates. The objectives of the SCSI parallel interface are:
The interface protocol includes provision for the connection of multiple initiators (SCSI devices capable of initiating an I/O process) and multiple targets (SCSI devices capable of responding to a request to perform an I/O process). Distributed arbitration (i.e., bus-contention logic) is built into the architecture of this standard. A default priority system awards interface control to the highest priority SCSI device that is contending for use of the bus and an optional fairness algorithm is defined.
This standard defines the physical attributes of an input/output bus for interconnecting computers and peripheral devices.
This standard has made obsolete the following:
Figure 1 is intended to show the general structure of SCSI standards. The figure is not intended to imply a relationship such as a hierarchy, protocol stack, or system architecture.
SDO | ISO: International Organization for Standardization |
Document Number | ISO/IEC 14776 |
Publication Date | Not Available |
Language | en - English |
Page Count | |
Revision Level | |
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Committee | ISO/IEC/JTC 1/SC 25 |