Technical data

Appendix B
Small Computer System Interface (SCSI)
B.1 Introduction
The Small Computer System Interface (SCSI) consists of circuitry and a bus for handling
control signals, messages, status bytes, and commands.
The SCSI 2 generates signals and translates tape drive data and status information into the
appropriate format for the SCSI bus. Commands presented to the SCSI bus are translated
into drive executable commands by the interface.
NOTE
For more information on these topics, please refer to the Small Computer
System Interface: A Developer’s Guide (EK-SCSIS-DK).
B.2 Signals
The definitions of the SCSI signals are provided in Table B–1. On single-ended interfaces,
signals are active-low. Table B–2 provides pinout information for the single-ended connectors.
Table B–3 provides pinout information for the differential-ended connectors.
Small Computer System Interface (SCSI) B–1