公开(公告)号：JPH0851356A

公开(公告)日：1996-02-20

申请号：JP9522195

申请日：1995-04-20

Applicant: XILINX INC

Inventor： RANDEII TEII ONGU

IPC: H03K19/173 ,  H03K19/177

Abstract: PURPOSE: To increase the number of realizable logical functions by internally configuring a CLB (logical block) and a configurable routing matrix again and executing the plural pieces of the logical functions. CONSTITUTION: A configuration memory 16 is provided with memory cells 21-1 to 21-n and 23-1 to 23-n and switches 28-1 to 48-n. The memories 21 and 23 store the complete set of configuration data CFD for the CLB and the configurable routing matrix CRM. The CLB and CRM use one of the CFD stored in the memories 21 and 23 and specify a form. The switches 28 pass through signals in response to selection input from an A/B line 30 and supply them to the CLB and the CRM. Thus, the CLB and the CRM are configured again, that is form-specified, corresponding to the two alternative set of the CFD.