Method and apparatus for terminating a bus

Details Method and apparatus for terminating a bus Method and apparatus for terminating a bus

1997-03-31

2000-05-30

Thai, Xuan M.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710102, 710103, 710 2, 710127, G06F 1300

Patent

active

060702060

ABSTRACT:
A method and apparatus is disclosed for terminating a SCSI bus having a SCSI port, with the SCSI port having a first set of I/O terminals associated only with wide SCSI buses and a second set of I/O terminals associated with both wide SCSI buses and narrow SCSI buses. The method includes the steps of determining if a first reference signal is present on one terminal of the first set of I/O terminals; determining if a second reference signal is present on one terminal of the second set of I/O terminals; and terminating each terminal of the first set of I/O terminals while not terminating any terminals of the second set of I/O terminals (1) if the first reference signal is not detected in the first reference signal determining step, and (2) if the second reference signal is detected in the second reference signal determining step.

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Automatic Small Computer System Interface Termination Circuit for Narrow/Wide Devices on Wide Bus; IBM Technical Disclosure Bulletin; vol. 40, No. 4, Apr. 1997; New York, US, pp. 79-82, XP000728275.
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