Patent ID: 7793183
Filing Date: 2010-09-07
Classification: G01R

Abstract:
1. A microcomputer on which a plurality of ICs (Integrated Circuits) connected from one another by a source-synchronous interface is mounted, the microcomputer comprising: an IC, on the side for transmitting data through the source-synchronous interface, which comprises: a PLL (Phase-Locked Loop) circuit being adapted for transmitting an operation clock in actual operation; a first flip-flop being adapted for transmitting test data in accordance with the operation clock transmitted from the PLL circuit; and a second flip-flop being adapted for transmitting a synchronous clock in source-synchronous, in accordance with the operation clock transmitted from the PLL circuit, and an IC, on the side for receiving data through the source-synchronous interface, which comprises: a third flip-flop being adapted for capturing, in accordance with the synchronous clock transmitted from the second flip-flop and the test data transmitted from the first flip-flop.