US 2004/0001489 A1 · Method and apparatus for interfacing utopia bus with serial TDM channel transporting ATM data

Abstract

A bidirectional serial TDM backplane—UTOPIA interface contains an ATM cell boundary location and transmit flow control mechanism, to provide for the efficient capture and storage of ATM cells from a serial TDM channel. Once stored in a transmit buffer, individual ATM cells are controllably read out for application to a downstream UTOPIA interface. In the upstream direction from the UTOPIA bus toward the serial TDM backplane, ATM cells are stored in a multi-cell receive buffer, so that they may be serialized for application to the TDM backplane. In the absence of ATM data cells to transfer, unfilled timeslots are filled with idle cells to maintain the ATM bus active.

Claims29

Dependent claims

A method for interfacing asynchronous transfer mode (ATM) cells between first and second communication channels comprising the steps of:

(a) providing a first, serial data port that is adapted to be coupled to a time division multiplexed (TDM) data channel over which ATM cells are serially transported:
(b) providing a second data port that is adapted to be coupled to a Universal Test and Operations PHY Interface for ATM (UTOPIA) channel;
and
(c) interfacing ATM cells within a downstream serial data stream supplied to said first serial data port with said second data port for application to said UTOPIA data transport channel, and interfacing ATM cells supplied to said second data port from said UTOPIA data transport channel to said first serial data port for application within an upstream serial data stream to said TDM data channel.

1 more element

An apparatus for interfacing asynchronous transfer mode (ATM) cells between first and second communication channels comprising:

a first, serial data port that is adapted to be coupled to a time division multiplexed (TDM) data channel over which ATM cells are serially transported:
a second data port that is adapted to be coupled to a Universal Test and Operations PHY Interface for ATM (UTOPIA) channel;
and
a dual port interface that is operative to interface ATM cells within a downstream serial data stream supplied to said first serial data port with said second data port for application to said UTOPIA data transport channel, and to interface ATM cells supplied to said second data port from said UTOPIA data transport channel to said first serial data port for application within an upstream serial data stream to said TDM data channel.

1 more element

Dependencies are inferred from the claim text.

Method and apparatus for interfacing utopia bus with serial TDM channel transporting ATM data

Life of this patent

Method and apparatus for interfacing utopia bus with serial TDM channel transporting ATM data

Life of this patent

Abstract

Claims29