Patent ID: 6708322
Filing Date: 2004-03-16
Classification: G06F

Abstract:
A logical integrated circuit on which a plurality of logic circuit component blocks are connected and installed, said logical integrated circuit comprising an interface checking block having functions of monitoring input/output signals to/from one of said blocks and determining whether the input/output signals conform to input/output signal patterns predetermined by specifications for the block, wherein, when the interface checking block determines that an input/output signal does not conform to the specifications, the interface checking block outputs a signal indicating nonconformity to the specifications through an external input/output pin, wherein said interface checking block is even characteristic values which are different for each logic circuit component block, and when the interface checking block detects a block in which an actual input/output signal does not conform to its pattern of the input/output signal patterns predetermined by the specifications for said each component block, the interface checking block informs a user of nonconformity to the specifications, together with the characteristic values of the block through the external input/output pin.