Patent ID: 6968436
Filing Date: 2005-11-22
Classification: G06F

Abstract:
1. A method for supplying a data signal read from a memory to an internal circuit of a semiconductor integrated circuit, the method comprising the steps of: generating supply timing information for determining supply timing of the data signal to the internal circuit on the basis of a result of matching a delayed data signal with an expected value; and supplying the data signal read from the memory to the internal circuit in accordance with the supply timing information, wherein the step of generating the supply timing information includes: generating a plurality of delayed data signals by delaying the data signal to an extent of a plurality of different delay times; detecting a specific delayed data signal suitable for the supply timing of the data signal to the internal circuit among the plurality of delayed data signals in accordance with an internal clock signal; and storing the detection of the specific delayed data signal as the supply timing information, and wherein the step of supplying the data signal includes: selecting one of the plurality of delayed data signals that corresponds to the detected specific delayed data signal in accordance with the supply timing information; and providing the selected delayed data signal to the internal circuit.