Patent ID: 6373846
Filing Date: 2002-04-16
Classification: H04L,H04Q

Abstract:
A communications single chip device for use in a communication system network that transfers data packets, each of the data packets characterized by having a header and a trailer, said device residing on a single chip, comprising:a programmable processor; an input/output interface unit for communicating said device with a communication network, said input/output interface unit operatively connected to said programmable processor; an Enhanced Direct memory Access (EDMA) unit, said EDMA a coprocessor to said programmable processor, said EDMA capable of removing headers and trailers from data packets, said EDMA capable of adding headers and trailers to data to form data packets, said EDMA capable of operating in at least two modes of operation, wherein the modes of operation further comprise one or more of the group consisting of direct memory access mode, ATM adaptation layer 0 mode, and ATM adaptation layer 5 mode; at least one memory unit operatively connected to said programmable processor and EDMA; a cell buffer memory (CBM) operatively connected to said interface unit for receiving data relating to packets; said programmable processor, interface unit, EDMA, memory unit and CBM formed and residing on a single chip.