公开(公告)号：JPH09172443A

公开(公告)日：1997-06-30

申请号：JP28481396

申请日：1996-10-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KAROL MARK JOHN ,  WOODWORTH CLARK ,  PAUL SANJOY

IPC: H04Q3/00 ,  H04L12/18 ,  H04L12/56 ,  H04Q11/04 ,  H04L12/28

Abstract: PROBLEM TO BE SOLVED: To obtain a device executing a logical connecting function at an ATM hardware level within VLSI of an exchange by providing a data selection means, a connecting function selective means and an arithmetic logical unit. SOLUTION: ALU 130 executes arithmetic based on an operand state 121 stored within a table 120 and the operand area 112 of a cell 110. Thereby the operand state 121 or the operand area 142 of an output cell 140, or both of them are updated. In particular, ALU 130 sets a flag based on the result of calculation and informs a flag control unit 150 of the flag. It is possible that the cell 140 is deleted corresponding to a flag control word or updated corresponding to the result. In addition it is possible the cell 140 is stored in the operand area 121 of the table 120. A code in the cell 110 is inserted by a user and on the other hand a software is used for updating operating codes.