| 摘要 |
PURPOSE:To easily separate defective blocks by a method wherein a gate to control the output of signals of an LSI block to the internal bus is added to the part of input-output from the LSI block to the internal bus. CONSTITUTION:In an LSI assemblage, a plurality of blocks lie in a wafer or chip and are connected to the internal bus. Therefore, defective blocks can be separated by providing the input-output of each block with a gate and then closing the gate of a defective block. The quality data of blocks is stored in an EPROM, and when the gate is controlled thereby, defective blocks can be suitably separated in generation of defective blocks. For example, output gates 5-i, 5-k; input gates 6-j, 6-l are provided in blocks 2-i, 2-j, 2-k, and 2-l. |
