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ISO/IEC 14776-112:2002

Current
Current

The latest, up-to-date edition.

Information technology Small Computer System Interface (SCSI) Part 112: Parallel Interface-2 (SPI-2)
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

11-06-2002

This international standard defines the mechanical, electrical, timing, and protocol requirements of the

SCSI parallel interface to allow conforming devices to interoperate. 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

a) To provide host computers with device independence within a class of devices. Thus, different disk

drives, tape drives, printers, optical media drives, and other devices may be added to the host

computers without requiring modifications to generic system hardware. Provision is made for the

addition of special features and functions through the use of vendor-specific options. Reserved areas

are provided for future standardization.

b) To provide compatibility such that properly conforming SCSI-2 devices may interoperate with

SCSI-3 devices given that the systems engineering is correctly done. Properly conforming SCSI-2

devices should respond in an acceptable manner to reject SCSI-3 protocol extensions. SCSI-3

protocol extensions are designed to be permissive of such rejections and thus allow the SCSI-2

devices to continue operation without requiring the use of the extension.

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 SCSI. 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.

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.

Common Access Method

Figure 1 - General Structure of SCSI

This international standard is intended as an alternate to the SCSI-3 Parallel Interface Standard. This

international standard, in addition to containing all the information in the SCSI-3 Parallel Interface Standard

contains information and specifications for LVD and fast-40 along with many other improvements.

DocumentType
Standard
Pages
203
ProductNote
This standard also refer to EIA-700A0AF,ISO/IEC 14776-311
PublisherName
International Organization for Standardization
Status
Current

CAN/CSA-ISO/IEC 14776-351-07 (R2017) Information Technology - Small Computer System Interface-3 (SCSI-3) - Part 351: Medium Changer Commands (SMC) (Adopted ISO/IEC 14776-351:2007, first edition, 2007-01)
CSA ISO/IEC 14776-115 : 2005 : R2010 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 115: PARALLEL INTERFACE-5 (SPI-5)
ISO/IEC 14776-121:2010 Information technology Small Computer System Interface (SCSI) Part 121: Passive Interconnect Performance (PIP)
CSA ISO/IEC 14776-321 : 2004 : R2012 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE-3 (SCSI-3) - PART 321: BLOCK COMMANDS (SBC)
CSA ISO/IEC 14776-362 : 2007 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 362: MULTIMEDIA COMMANDS-2 (MMC-2)
CSA ISO/IEC 14776-351 : 2007 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE-3 (SCSI-3) - PART 351: MEDIUM CHANGER COMMANDS (SMC)
CSA ISO/IEC 14776-113 : 2004 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 113: PARALLEL INTERFACE-3 (SPI-3)
CSA ISO/IEC 14776-412 : 2007 : R2012 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 412: ARCHITECTURE MODEL-2 (SAM-2)
ANSI INCITS 367 : 2003(S2018) INFORMATION TECHNOLOGY - SCSI PARALLEL INTERFACE-5 (SPI-5)
ANSI INCITS 367 : 2003 : R2008 INFORMATION TECHNOLOGY - SCSI PARALLEL INTERFACE-5 (SPI-5)
CSA ISO/IEC 14776-331 : 2004 : R2013 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 331: STREAM COMMANDS (SSC)
CSA ISO/IEC 14776-113 : 2004 : R2012 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 113: PARALLEL INTERFACE-3 (SPI-3)
ANSI INCITS 362 : 2002 SCSI PARALLEL INTERFACE-4 (SPI-4)
CSA ISO/IEC 14776-362 : 2007 : R2012 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 362: MULTIMEDIA COMMANDS-2 (MMC-2)
CAN/CSA-ISO/IEC 14776-331-04 (R2018) Information Technology - Small Computer System Interface (SCSI) - Part 331: Stream Commands (SSC) (Adopted ISO/IEC 14776-331:2002, first edition, 2002-09)
ANSI INCITS 368 : 2003(S2018) INFORMATION TECHNOLOGY - PASSIVE INTERCONNECT PERFORMANCE (PIP)
ISO/IEC 14776-413:2007 Information technology Small Computer System Interface (SCSI) Part 413: SCSI Architecture Model -3 (SAM-3)
ISO/IEC 14776-362:2006 Information technology Small Computer System Interface (SCSI) Part 362: Multimedia commands-2 (MMC-2)
CSA ISO/IEC 14776-115 : 2005 : R2015 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 115: PARALLEL INTERFACE-5 (SPI-5)
ISO/IEC 14776-321:2002 Information technology Small Computer System Interface-3 (SCSI-3) Part 321: SCSI-3 Block Commands (SBC)
ISO/IEC 14776-113:2002 Information technology Small Computer System Interface (SCSI) Part 113: Parallel Interface-3 (SPI-3)
ISO/IEC 14776-351:2007 Information technology Small Computer System Interface-3 (SCSI-3) Part 351: Medium Changer Commands (SCSI-3 SMC)
CAN/CSA-ISO/IEC 14776-362-07 (R2017) Information Technology - Small Computer System Interface (SCSI) - Part 362: Multimedia Commands-2 (MMC-2) (Adopted ISO/IEC 14776-362:2006, first edition, 2006-04)
CAN/CSA-ISO/IEC 14776-321-04 (R2017) Information Technology - Small Computer System Interface-3 (SCSI-3) - Part 321: Block Commands (SBC) (Adopted ISO/IEC 14776-321:2002, first edition, 2002-08)
CSA ISO/IEC 14776-321:2004 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE-3 (SCSI-3) - PART 321: BLOCK COMMANDS (SBC)
CSA ISO/IEC 14776-413 : 2007 : R2012 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 413: ARCHITECTURE MODEL-3 (SAM-3)
CAN/CSA-ISO/IEC 14776-412-07 (R2017) Information Technology - Small Computer System Interface (SCSI) - Part 412: Architecture Model-2 (SAM-2) (Adopted ISO/IEC 14776-412:2006, first edition, 2006-10)
ISO/IEC 14776-331:2002 Information technology Small Computer System Interface (SCSI) Part 331: Stream Commands (SSC)
CAN/CSA-ISO/IEC 14776-113-04 (R2017) Information Technology - Small Computer System Interface (SCSI) - Part 113: Parallel Interface-3 (SPI-3) (Adopted ISO/IEC 14776-113:2002, first edition, 2002-08)
ANSI INCITS 368 : 2003 : R2008 INFORMATION TECHNOLOGY - PASSIVE INTERCONNECT PERFORMANCE (PIP)
CSA ISO/IEC 14776-351 : 2007 : R2012 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE-3 (SCSI-3) - PART 351: MEDIUM CHANGER COMMANDS (SMC)
CSA ISO/IEC 14776-115 :2005 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 115: PARALLEL INTERFACE-5 (SPI-5)
CSA ISO/IEC 14776-412:2007 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 412: ARCHITECTURE MODEL-2 (SAM-2)
CAN/CSA-ISO/IEC 14776-413-07 (R2017) Information Technology - Small Computer System Interface (SCSI) - Part 413: Architecture Model-3 (SAM-3) (Adopted ISO/IEC 14776-413:2007, first edition, 2007-02)
ISO/IEC 14776-115:2004 Information technology Small Computer System Interface (SCSI) Part 115: Parallel Interface-5 (SPI-5)
CSA ISO/IEC 14776-413 : 2007 INFORMATION TECHNOLOGY - SMALL COMPUTER SYSTEM INTERFACE (SCSI) - PART 413: ARCHITECTURE MODEL-3 (SAM-3)
ISO/IEC 14776-322:2007 Information technology Small Computer System Interface (SCSI) Part 322: SCSI Block Commands - 2 (SBC-2)

ISO/IEC 14776-411:1999 Information technology Small Computer System Interface-3 Part 411: SCSI-3 Architecture Model (SCSI-3 SAM)
IEC 60512-11-7:2003 Connectors for electronic equipment - Tests and measurements - Part 11-7: Climatic tests - Test 11g: Flowing mixed gas corrosion test
ISO/IEC 9316:1995 Information technology Small Computer System Interface-2
ISO/IEC 14776-412:2006 Information technology Small Computer System Interface (SCSI) Part 412: Architecture Model -2 (SAM-2)
ISO/IEC 8482:1993 Information technology Telecommunications and information exchange between systems Twisted pair multipoint interconnections

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