Patent ID: 8232820
Filing Date: 2012-07-31
Classification: G01R,G06F

Abstract:
1. A System-On-a-Chip (SOC), wherein at least one pin of the SOC is used in a first interface mode or a second interface mode during different time; the SOC comprises a first interface circuit, a first pin, a second interface circuit and a second pin; the first interface circuit comprises a first bidirectional PAD unit, a first signal interface unit of the first interface mode, an output port of the first bidirectional PAD unit is connected with the first pin; the second interface circuit comprises a second bidirectional PAD unit, a second signal interface unit of the first interface mode, the second signal interface unit of the first interface mode is connected with the second pin through the second bidirectional PAD unit; the first interface circuit further comprises a selecting unit and an interface unit of the second interface mode; the selecting unit is used to select an output of the first signal interface unit of the first interface mode or an output of the interface unit of the second interface mode during different time, and the the selected output is connected with an input port of the first bidirectional PAD unit.