Method and apparatus for ATM cell alignment

Details Method and apparatus for ATM cell alignment Method and apparatus for ATM cell alignment

1993-11-17

1995-11-28

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 66, 3701051, 370108, H04J 306

Patent

active

054714664

ABSTRACT:
An Asynchronous Transfer Mode (ATM) cell alignment assembly aligns an incoming ATM cell within an internal time slot of an ATM matrix by controllably time-delaying the cell before being switched by the matrix. The alignment assembly includes a 53-byte-wide shift register having a serial input receiving the incoming ATM cell, and fifty-three parallel outputs each coupled to a respective input of a 53.times.8 programmable crosspoint switching array. Each output of the array is coupled to an input of a shift register having eight parallel inputs and a serial output coupled to a respective input of the ATM matrix. The crosspoint switching array establishes only a single selected switching path through the array in accordance with the desired time delay, and is reconfigured upon the arrival of each incoming ATM cell.

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patent: 4359770 (1982-11-01), Suzuka
patent: 4528854 (1985-07-01), Shimazaki
patent: 4818988 (1989-04-01), Cooperman et al.
patent: 5022056 (1991-06-01), Henderson et al.

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