LSOBS chip set for ATM with concentration function

Abstract

This paper presents the LSOBS chip set that has function of concentration. The LSOBS mainly consists of two types of ASICs which are switch chip NSBM and SMC respectively. Each chip is implemented by 0.5 /spl mu/m CMOS triple-metal technology. The total transistor count of each chip is about 940 K and the chip die size is 17 mm/spl times/7 mm. And it is packaged with 447-pin CPGA, and the operation speed is 46.74 MHz.