Asynchronous transfer mode (ATM) cell multiplexing/demultiplexing apparatus

摘要

This invention relates to an ATM cell multiplexing/demultiplexing apparatus for inserts simple routing information in corresponding bits within an ATM cell and performing cell multiplexing/demultiplexing operation between a single ATM layer device and a number of physical layer devices using the routing information, the apparatus comprises: a decoding/demultiplexing unit for extracting routing information from a header of each ATM cell transmitted from the ATM layer device and demultiplexing the ATM cell according to the routing information extracted into the number of physical layer devices; an ATM cell multiplexing unit for multiplexing the ATM cells transmitted from the number of physical layer devices into the ATM layer device; a receiving routing unit for inserting routing information within a header of each ATM cell multiplexed by the ATM cell multiplexing unit; and a micro bus interface unit for interfacing the ATM layer device and the number of physical layer devices with respect to system operation and management information and transmitting an interrupt signal of each physical layer device to the ATM layer device.