Asynchronous transfer mode (ATM) layer function processing apparatus with an enlarged structure
First Claim
1. An asynchronous transfer mode (ATM) layer function processing apparatus with an enlarged structure, comprising:
- ATM layer receiving cell processing means for storing a cell start signal and cell input data extracted by use of a cell read clock in a buffer when a cell transmissible signal is received from an input signal of a subscriber physical layer function processor, extracting a flag according to the number of stored cells, and performing a multiplexing operation according to a scheduling algorithm using a cell interrupt signal and the extracted flag;
processor interface means for forming a cell from data received from a microprocessor, storing said cell in a buffer, generating said cell interrupt signal, and controlling each constituent of said ATM layer function processing apparatus;
ATM layer transmitting cell processing means for performing an input cell routing function according to an output port identifier value when a corresponding routing value and a match signal are generated from a connection table, and performing output cell routing, broadcasting and selective broadcasting functions according to the field allocation of an appropriate output port identifier value; and
function mode processing means connected between said ATM layer receiving cell processing means and said ATM layer transmitting cell processing means, for independently connecting said ATM layer receiving cell processing means and said ATM layer transmitting cell processing means to network and subscriber physical layer function processors connected to each physical link according to a control signal of said processor interface means.
1 Assignment
0 Petitions
Accused Products
Abstract
An asynchronous transfer mode (ATM) layer function processing apparatus with an enlarged structure is disclosed including: an ATM layer receiving cell processor for storing a cell start signal and cell input data extracted by use of a cell read clock in a buffer when a cell transmissible signal is received from an input signal of a subscriber physical layer function processor, extracting a flag according to the number of stored cells, and performing a multiplexing operation according to a scheduling algorithm using a cell interrupt signal and the extracted flag; a processor interface for forming a cell from data received from a microprocessor, storing the cell in a buffer, generating the cell interrupt signal, and controlling each constituent of the ATM layer function processing apparatus; an ATM layer transmitting cell processor for performing an input cell routing function according to an output port identifier value when a corresponding routing value and a match signal are generated from a connection table, and performing output cell routing, broadcasting and selective broadcasting functions according to the field allocation of an appropriate output port identifier value; and a function mode processor for independently connecting the ATM layer receiving and transmitting cell processors to network and subscriber physical layer function processors connected to each physical link according to a control signal of the processor interface.
89 Citations
7 Claims
-
1. An asynchronous transfer mode (ATM) layer function processing apparatus with an enlarged structure, comprising:
-
ATM layer receiving cell processing means for storing a cell start signal and cell input data extracted by use of a cell read clock in a buffer when a cell transmissible signal is received from an input signal of a subscriber physical layer function processor, extracting a flag according to the number of stored cells, and performing a multiplexing operation according to a scheduling algorithm using a cell interrupt signal and the extracted flag; processor interface means for forming a cell from data received from a microprocessor, storing said cell in a buffer, generating said cell interrupt signal, and controlling each constituent of said ATM layer function processing apparatus; ATM layer transmitting cell processing means for performing an input cell routing function according to an output port identifier value when a corresponding routing value and a match signal are generated from a connection table, and performing output cell routing, broadcasting and selective broadcasting functions according to the field allocation of an appropriate output port identifier value; and function mode processing means connected between said ATM layer receiving cell processing means and said ATM layer transmitting cell processing means, for independently connecting said ATM layer receiving cell processing means and said ATM layer transmitting cell processing means to network and subscriber physical layer function processors connected to each physical link according to a control signal of said processor interface means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification