Apparatus and method for reading the default value of a peripheral component

A method for reading the default value of a peripheral component, said default value being set up by a circuit board or being stored in a memory, the way that said circuit board sets up the default value being to connect a power end of said circuit board to a plurality of I/O signals of said peripheral component, said method comprising the following steps:

• (a) after a reset signal is enabled, the plurality of I/O signals being read;
• (b) if the values of the plurality of I/O signals are all logic zero (0), it means that said circuit board has not set up the default value of said peripheral component;
• otherwise, it means that said circuit board has set up the default value of said peripheral component;
• (c) in step (b), if said circuit board has not set up the default value of the peripheral component, then the following steps are executed:
• (c1) reading the default value of said peripheral component stored in said memory;
• and
• (c2) setting up the peripheral component according to the default value;
• and
• (d) in step (b), if said circuit board has set up the default value of the peripheral component, then setting up said peripheral component according to the values read in step (a).

A method for reading the default value of a peripheral component, said default value being set up by a circuit board or being stored in a memory, the way that said circuit board sets up the default value is to connect a ground end of said circuit board to a plurality of I/O signals of said peripheral component, said method comprising the following steps:

• (a) after a reset signal is enabled, the plurality of I/O signals being read;
• (b) if the values of the plurality of I/O signals are all logic one (1), it means that said circuit board has not set up the default value of said peripheral component;
• otherwise, said circuit board has set up the default value of said peripheral component;
• (c) in step (b), if said circuit board does not set up the default value of the peripheral component, then the following steps are executed:
• (c1) reading the default value of said peripheral component stored in said memory;
• and
• (c2) setting up the peripheral component according to the default value;
• and
• (d) in step (b), if said circuit board has set up the default value of the peripheral component, then setting up said peripheral component according to the values read in step (a).