622Mbps ATM switch access LSI
Toshio Fujisawa, Jun Hasegawa, Taketoshi Tsujita, Yoshimitsu Shimojo, Toshitada Saito
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We have developed a switch access LSI, SAM, which functions as an interface to an ATM switch fabric. It constitutes a 20Gbps switch system with another two chips. SAM has remarkable features that include UPC cell discarding, and shaping port. Additionally, SAM provides various ATM layer functions required in most ATM switch systems. In this paper, implementation of SAM, policing and shaping functions will be described, and then evaluated value will be shown. The accuracy of the policing function is less than 0.01%. The standard deviation of cells transmitted from the traffic shaper is less than 80ns.
