Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination
Patent
1994-07-20
1996-10-29
Westin, Edward P.
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
Bus or line termination
326 86, 326 90, H03K 1716
Patent
active
055700373
ABSTRACT:
A method and apparatus electrically disconnects termination on a differential transmission bus. A switchable impedance matching termination apparatus is provided including a terminating resistor network for terminating at least one pair of a plurality of differential signal line pairs. An enabling signal input is also provided. Further, the invention has a first signal network interconnected between the enabling signal input and the terminating resistor network. Also provided is a second signal network interconnected between the enabling signal input and the terminating network wherein the first and second signal networks are responsive to the signal. The response is designed to terminate the at least one pair of the plurality of differential signal line pairs. A method is also provided for disconnecting terminating resistors on a device having a differential transmission line.
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patent: 5331206 (1994-07-01), Liron
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patent: 5382841 (1995-01-01), Feldbaumer
patent: 5466975 (1995-11-01), Wratten
Methode Electronics
Newman David L.
Sanders Andrew
Westin Edward P.
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