KR950022434A - Asynchronous Hub Mode and Control Method of Broadcast Star Method by Arbitrator - Google Patents

Abstract

The present invention relates to an ATM hub and a control method of a broadcast star method by an arbiter, comprising: an access buffer, an access buffer control means, and an arbitration means; step; If there is an access buffer cell, the access buffer controller drives a broadcast request signal to the arbiter to make a broadcast request, and if the broadcast permission signal is driven in the arbiter, obtaining a broadcast bus license; The licensed access buffer controller transmits the cell to the broadcast bus. The process includes the process of the access buffer controller including the step of initializing a variable in the arbiter and waiting for the cell synchronization clock to occur after the initialization is completed. The fourth step; A fifth step of finding an access buffer controller driving the broadcast request signal while increasing the variable when the cell synchronization clock is generated; If the access controller is found, canceling the permission of the previously-accessed access buffer controller and continuing to send a permission signal to the newly selected access buffer controller whenever the cell synchronization clock is generated. Characterized in that the process is provided.

Description

Asynchronous Hub Mode and Control Method of Broadcast Star Method by Arbitrator

Since this is an open matter, no full text was included.

2 is a block diagram of an ATM hub according to the present invention.

3 is an operation flowchart of an access buffer controller according to the present invention.

Claims (2)

A plurality of access buffers for temporarily storing cells transmitted from an external terminal; Access buffer control means for selectively transmitting cells stored in each of the plurality of access buffers; And a mediation means (26) for exchanging control signals for arbitration with the access buffer control means so that only a selected access buffer controller can transmit a cell. CLAIMS 1. A method for controlling an ATM hub, comprising: an access buffer, access buffer control means, and arbitration means, comprising: a first step of checking a state of an access buffer each time an access buffer cell synchronization clock occurs; If there is an access buffer cell, the access buffer controller drives a broadcast request signal to the arbiter to make a broadcast request, and if the broadcast permission signal is driven in the arbiter, obtaining a broadcast bus license; The licensed access buffer controller includes a third step of transmitting a cell to the broadcast bus, and the process of the access buffer controller including the step of initializing a variable in the arbiter and waiting for the cell synchronization clock to occur after completion of initialization. The fourth step; A fifth step of finding an access buffer controller driving the broadcast request signal while increasing the variable when the cell synchronization clock is generated; If the access controller is found, canceling the permission of the previously-accessed access buffer controller and continuing to send a permission signal to the newly selected access buffer controller whenever the cell synchronization clock is generated. A broadcast star type ATM hub control method by an arbiter, characterized in that it comprises a process. ※ Note: The disclosure is based on the initial application.