An implementation of 100 Mbps TAXI subscriber board

There have been proposed and standardized several efficient physical layer interfaces by the ATM Forum. Among these standards, 100 Mbps TAXI is the second most popular in the ATM market. In this paper, an implementation of 100 Mbps TAXI subscriber interface board (TSIB) for a B-NT2 system called CANS is described and some design considerations are addressed. The board was designed and implemented simply and can transmit and receive data at cell rates of up to 98.148 Mbps which is the maximum data rate of the specification due to the TT overhead. In addition to this basic cell transferring function, various mechanisms were adopted to meet the system requirements and to make the circuit more fault-tolerant