Patent ID: 7849244

Claim:
An apparatus for resolving conflicts happened between two I 2 C slave devices with the same addressed address, comprising: a switching circuit, coupled to the two I 2 C slave devices, for determining which one of the two I 2 C slave devices performs a data transmission with an I 2 C master device according to a first selecting signal and a second selecting signal, when the I 2 C master device intends to perform the data transmission with the two I 2 C slave devices; and a selecting circuit, coupled to the switching circuit, and controlled by one of the I 2 C master device and a system chip according to whether a basic input/output system (BIOS) completes a power-on self-test (POST) or not, thereby generating the first selecting signal and the second selecting signal, wherein when the BIOS does not complete the POST, the selecting circuit is controlled by the I 2 C master device, and when the BIOS completes the POST, the selecting circuit is controlled by the system chip.