Inactive state termination tester
AssigneeMethode Electronics, Inc.
InventorsFrancis M. Samela, Joseph R. Llorens
Life of this patent
Estimating the term…
Abstract
An inactive state termination tester for determining the number of terminators connected to a bus when the bus is inactive. The termination tester monitors the bus for determining when it is inactive. During the periods of bus inactivity, the termination tester senses the bus to determine the number of terminators connected to the bus. The termination tester then displays how many terminators were detected and/or generates a signal to either enable or disable, respectively, a controllable bus terminator depending on if there are not enough or too many terminators determined to be connected to the bus.
Claims21
An inactive state termination tester for determining the number of terminators connected to a bus, said inactive state termination tester comprising:
- a) means for detecting bus inactivity to produce a bus inactivity signal;
- b) means for detecting said number of terminators connected to said bus, when said bus inactivity signal is received, to produce a terminator detection signal corresponding to said number of terminators connected to said bus;
- and
- c) means for providing a signal for terminator enablement or disablement, respectively, depending on if there are not enough or too many terminators detected on said bus.
An inactive state termination tester for determining the number of terminators connected to a SCSI bus, said inactive state termination tester comprising:
- a) means for detecting when the SCSI bus is inactive to produce a SCSI bus inactivity signal;
- b) means for determining the number of terminators connected to said SCSI bus, when said SCSI bus inactivity signal is received, to produce a terminator detection signal corresponding to said number of terminators connected to said SCSI bus;
- and
- c) means for providing a signal for SCSI bus terminator enablement or disablement, respectively, depending on if there are not enough or too many terminators detected on said SCSI bus.
A method for determining the number of terminators connected to a bus, said method comprising the steps of:
- a) detecting bus inactivity;
- b) determining the number of terminators connected to said bus during bus inactivity;
- and
- c) providing a signal for controllable bus terminator enablement or disablement, respectively, depending on if there are not enough or too many terminators determined to be connected to said bus.
Dependencies are inferred from the claim text.