APPARATUS OF PROCESSING THE AAL BY CPU AT ATM TERMINAL AND A METHOD THEREOF

• Main Author: KWAK, JONG-IN
• Format: Patent
• Language: English
• Published: 01.10.1999
• Edition: 6
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; SELECTING; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

An asynchronous transfer mode adaptation layer (AAL) processing apparatus using a central processing unit in an asynchronous transfer mode (ATM) terminal includes: a physical layer for performing physical functions and supporting universal test and operations physical interface for ATM (UTOPIA); a software segmentation and reassembly interface device (SSID) for storing ATM cells outputted by the physical layer in a double port RAM under the control of a central processing unit and outputting to the physical layer the ATM cells, which have been stored in the double port RAM by the central processing unit, under the control of the central processing unit; a double port RAM for storing the ATM cells depending upon the control of the central processing unit or the SSID; a system memory for temporarily storing the ATM cells of the central processing unit; and a central processing unit, for storing in the double port RAM the user data, produced by reassembly of the ATM cells stored in the double port RAM, for storing in the double port RAM the ATM cells produced by segmentation of the user data stored in the double port RAM, and for controlling the overall system.