Patent ID: 7933264
Filing Date: 2011-04-26
Classification: G06F

Abstract:
1. A serial multiplexer module for controlling communication between a baseboard management controller (BMC), an input/output (I/O) controller, and a serial transceiver, said I/O controller and said serial transceiver being disposed on a mother board of a computer system, said serial multiplexer module comprising: a first switching device in circuit connection with said BMC and said I/O controller, controlled directly/indirectly by a first control signal transmitted by said BMC; a second switching device in circuit connection with said I/O controller and said serial transceiver, controlled directly/indirectly by a second control signal transmitted by said BMC; a third switching device in circuit connection with said BMC and said serial transceiver, controlled directly/indirectly by said first control signal and said second control signal transmitted by said BMC; at least one first inverter for inverting said first control signal and generating an inverted first signal; and at least one second inverter for inverting said second control signal and generating an inverted second signal; wherein each of said first, second, and third switching devices has respectively four simplex sub-switches controlled directly/indirectly by said first control signal and/or said second control signal to switch on/off respectively.