Patent ID: 7533208

Claim:
A bus control system comprising: a bus having a slot, the bus complying with a bus protocol; a bus controller having logic that controls operation of the bus; an electrical connection between the bus controller and the bus, the bus controller comprising a control module implementing the bus protocol, and a driver for directing signals toward the bus via the electrical connection, the control module having logic that generates a set of float signals having data that causes the electrical connection between the bus controller and bus to have a float impedance, the electrical connection between the bus controller and bus having a transmit impedance range when transmitting signals, the float impedance being greater than the transmit impedance range to electrically isolate the bus controller from the bus; a signal receiver for receiving signals from the bus via the electrical connection; and a multiplexer having an output electrically coupled with the control module, the multiplexer also having an input electrically coupled with the driver and signal receiver.