Patent ID: 6897695
Filing Date: 2005-05-24
Classification: H03K,H03L

Abstract:
1. A semiconductor integrated circuit device comprising: (a) an actual input circuit; (b) an actual output circuit; (c) a replica input circuit having the same characteristics as those of said actual input circuit; (d) a replica output circuit having the same characteristics as those of said actual input circuit; (e) an oscillating circuit which operates in accordance with external triggers; and (f) a skew-comparing circuit which compares a signal transmitted from said oscillating circuit and passing through said actual input circuit and said actual output circuit, to a signal transmitted from said oscillating circuit and passing through said replica input circuit and said replica output circuit to detect a delay error between said actual input and output circuits and said replica input and output circuits, wherein delays in said replica input and output circuits are compensated for in accordance with said delay error detected by said skew-comparing circuit.