| 摘要 |
A method for terminating signals in an information handling system comprises includes providing a plurality of resistance elements, providing at least three transmission lines each having a characteristic impedance, each of the transmission lines having a first end, each of the first ends being coupled together through said resistance elements, and a second end, and providing a plurality of drivers equaling the number of transmission lines in the plurality of transmission lines, each driver coupled to a second end of a different one of the transmission lines, each driver comprising a pull-down circuit having a pull-down resistance matched to the characteristic impedance of one of the lines, and a pull-up circuit having a pull-up resistance corresponding to the number of second ends. The method further includes providing at least one receiver circuit coupled to a second end of one of the transmission lines, designating one of the drivers as an active driver, and designating each driver in the plurality of drivers other than the active driver as a terminating driver. Finally, the method includes causing each terminating driver to be configured in a nonactive pull-down terminating configuration, and causing the active driver to drive a signal onto the transmission line to which the active driver is connected.
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