Patent ID: 6813192
Filing Date: 2004-11-02
Classification: G06F,Y02D

Abstract:
An apparatus for reading the default value of a peripheral component, said default value being set up by a power/ground end on a circuit board connected to said peripheral component or being stored in a memory, said apparatus comprising:a plurality of bi-directional buffers having the ability to determine the direction of data transmissions, said bi-directional buffers having a first end and a second end, said first end connected to said peripheral component, and said second end connected to one of said power/ground end on said circuit board and said memory; a combinational logic, connected to said first end of the bi-directional buffers for determining if the default value of said peripheral component is set up by the circuit board; a register for storing the output of said combinational logic; a control unit, connected to the output of said register and a reset signal and suspend signal on said circuit board for generating a pull driving signal and a control signal to determine the direction of data transmissions of said bidirectional buffers; and a plurality of pull resistors, having a first end and a second end, said first end connected to the second end of said bi-directional buffers, and said second end connected to said pull driving signal of said control unit.