Method for operating an information handling system

A method for operating an information handling system comprising:

• providing a plurality of resistance elements;
• providing at least three transmission lines having a characteristic impedance, each of said transmission lines having a first end, said first ends being coupled together through different ones of said resistance elements, and a second end;
• providing a plurality of drivers equaling the number of transmission lines in said plurality of transmission lines, each driver coupled to a second end of a different one of said transmission lines, each driver comprising a pull-up circuit having a pull-up resistance matched to the characteristic impedance of one of said lines, and a pull-down circuit having a pull-down resistance corresponding to the number of second ends;
• providing at least one receiver circuit coupled to a second end of one of said transmission lines;
• designating one of said drivers as an active driver;
• designating each driver in said plurality of drivers other than said active driver as a terminating driver;
• causing each terminating driver to be configured in a nonactive pull-up terminating configuration;
• and
• causing said active driver to drive a signal onto the transmission line to which said active driver is connected.

A method for operating an information handling system comprising:

• providing a plurality of resistance elements;
• providing at least three transmission lines having a characteristic impedance, each of said transmission lines having a first end, said first ends being coupled together through different ones of said resistance elements, and a second end;
• providing at least one driver, each coupled to a second end of a different one of said transmission lines, each driver comprising a pull-down circuit having a pull-down resistance matched to the characteristic impedance of one of said lines, and a pull-up having a pull-up resistance corresponding to the number of second ends;
• providing at least one receiver circuit coupled to a second end of one of said transmission lines;
• providing a plurality of on-chip terminators each having an output resistance matched to the characteristic impedance of said transmission lines;
• designating one of said drivers as an active driver;
• causing each transmission line not connected to said active driver to be terminated to a lower rail by one of the following:
• an on-chip terminator, a nonactive driver in a pull-down terminating configuration;
• and
• causing said active driver to drive a signal onto the transmission line to which said active driver is connected.

A method for operating an information handling system comprising:

• providing a plurality of resistance elements;
• providing at least three transmission lines having a characteristic impedance, each of said transmission lines having a first end, said first ends being coupled together through different ones of said resistance elements, and a second end;
• providing at least one driver, each driver coupled to a second end of a different one of said transmission lines, each driver comprising a pull-up circuit having a pull-up resistance matched to the characteristic impedance of one of said lines, and a pull-down circuit having a pull-down resistance corresponding to the number of second ends;
• providing at least one receiver circuit coupled to a second end of one of said transmission lines;
• providing a plurality of on-chip terminators each having an output resistance matched to the characteristic impedance of said transmission lines;
• designating one of said drivers as an active driver;
• causing each transmission line not connected to said active driver to be terminated to an upper rail by one of the following:
• an on-chip terminator, a nonactive driver in a pull-up terminating configuration;
• and
• causing said active driver to drive a signal onto the transmission line to which said active driver is connected.