KR19980043922A - Internal Process Control Arbitration Logic Circuits Using Ethernet - Google Patents

Abstract

The present invention provides a processor bus and arbitration on a back board for internal process control (IPC) with each input and output interface module in an ATM LAN SWITCH system. What you should have is an internal process control arbitration logic circuit using ethernet that allows you to handle IPC smoothly using Ethernet control arbitration logic in the mainboard module.

To this end, in the present invention, in the ATM LAN SWITCH system, the main board or each of the input and output interface modules and the internal process control, wherein the mainboard module and the input and output interface modules are respectively provided with data or control signal information through the Ethernet bus. An Ethernet controller that controls the transmission and reception of Ethernet packets

A local arbitration logic section for arbitrating a local bus to transmit data or control signal information received through the Ethernet controller to a local CPU, and a local interpreting data or control signal information arbitrated from the local logic section It is configured with CPU.

Description

Internal Process Control Arbitration Logic Circuits Using Ethernet

The present invention relates to an internal process control arbitration logic circuit using Ethernet, and in particular, an internal process control (IPC) with each input and output interface module in an ATM LAN SWITCH system. In the main board module, it is necessary to have processor bus and arbitration on the back board in order to handle IPC smoothly using Ethernet control arbitration logic.

The conventional ATM LAN switch system is composed of a power plane module (0), a main board module (2) and a plurality of input and output interface modules (2, 3, 4, 5) as shown in FIG. .

In addition, the main board module 1 arbitrates and shares with the shared memory unit 11 that stores data DATA or control signal CONTROL information through a shared bus, as shown in FIG. And a shared memory and shared bus arbitration unit 12 for controlling the memory, and a local CPU 13 for generating and interpreting data or control signals.

In addition, the input and output interface module (2, 3, 4, 5) is shared to store the data (DATA) or control signal (CONTROL) information through a shared bus as in the internal configuration of the main board module (1) Memory 21, 31, 41, and shared memory and shared bus arbitration units 22, 32, 42, which arbitrate with the common shared bus and control the shared memory, and data or control signals. It is configured to include local CPUs 23, 33, 43 for generating and interpreting them.

The operation of the prior art thus constructed will be described.

First, in order to control the main board (1) or each input / output interface module (2 ~ 5) and internal process in the ATM LAN switch system, a common shared bus is created on the back board. When each module executes arbitration and the authority to use the common shared bus is generated, it transmits through the control signal or data common shared bus to be transmitted.

At this time, when there are two or more main boards or each input / output interface module to use the common shared bus, it operates in a manner that gives permission to use the common shared bus in the order of high priority.

However, since the input / output interface module includes the same arbitration logic, the conventional technology causes a price increase due to duplication of the same components, and the inconvenience of having to transmit the same control signal or data multiple times. there was.

According to the present invention, the main board module needs to have a processor bus and arbitration on the back board in order to perform internal process control (IPC) with each input / output interface module in the ATM LAN SWITCH system. The purpose is to provide an internal process control arbitration logic circuit that facilitates IPC using net control arbitration logic.

In order to achieve the above object, the technical means of the present invention is to perform internal process control with a main board or respective input / output interface modules in an ATM LAN SWITCH system.

The main board module and the input and output interface modules are each an Ethernet controller for controlling data or control signal information to be transmitted and received in an Ethernet packet through an Ethernet bus,

Local arbitration logic section for arbitrating the local bus to transmit data or control signal information received through the Ethernet controller to the local CPU, and local for interpreting data or control signal information arbitrated from the local arbitration logic section. It is configured to include the CPU.

1 is a configuration diagram of a conventional ATM LAN switch (ATM LAN SWITCH) system.

FIG. 2 is a block diagram of FIG. 1.

3 is a block diagram of an internal process control arbitration logic circuit block according to the present invention;

* Description of the symbols for the main parts of the drawings *

100: mainboard module

200,300,400,500: I / O interface module

111,121,131,141,151: Ethernet Controller

112,122,132,142,152: Local arbitration logic section

113,123,133,143,153: Local central processing unit (CPU)

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 shows a block diagram of an internal process control arbitration logic circuit according to the present invention.

As shown in FIG. 3, in the ATM LAN SWITCH system, the main board or each input / output interface module and the internal process control, the main board module 100 and the input / output interface module 200, 300, 400, 500 are each an Ethernet bus ( Ethernet controller (111,121,131,141,151) for controlling data or control signal information to be transmitted and received through Ethernet) and local CPU (113,123,133,143,153) for data or control signal information received through the Ethernet controller (111,121,131,141,151). And a local arbitration logic section 112, 122, 132, 142, 152 for arbitrating the local bus for transmission to the local bus, and a local CPU 113, 123, 133, 143, 153 for interpreting data or control signal information arbitrated from the local arbitration logic section 112, 122, 132, 142, 152.

In addition, the motherboard 100 and the input and output interface module (200, 300, 400, 500) is assigned a slot ID (ID) to recognize the slot (slot).

Referring to the operation and effect of the present invention configured as described above are as follows.

The present invention is to accurately transmit information using an Ethernet data packet without using a shared bus to perform internal processing control with the main board module 100 and the input / output interface modules 200, 300, 400, and 500 in an ATM LAN SWITCH system. .

First, when the main board module 100 wants to control the input / output interface modules 200, 300, 400, and 500, the local arbitration logic unit provides information for the local CPU 113 in the main board module 100 to inform the status of the input / output interface module. In step 112, data is transmitted to the Ethernet controller 111.

When the data is transmitted in this way, the Ethernet control 111 detects the presence of an Ethernet packet on the Ethernet bus.

In this case, when there is no carrier, Ethernet packet is transmitted at 10Mbps.

At this time, the Ethernet controllers 121, 131, 141, and 151 in the input / output interface modules 200, 300, 400, and 500 detect the Ethernet packet and receive the Ethernet packet that comes to them and receive the arbitration of the local arbitration logic unit 122 to receive the local CPU 123. Send data to

The local CPU 123 interprets the data and recognizes the information to inform its status. The local CPU 123 receives data of the current situation of the input / output interface module through the mediation of the local arbitration logic unit 122 and transmits the data to the Ethernet controller 121. When transmitting the Ethernet controller 121 detects the carrier whether there is an Ethernet packet on the Ethernet bus (Ethernet).

As described above, the Ethernet packet is transmitted at a speed of 10 Mbps with and without a carrier.

The Ethernet controller in the main board module 100 detects the Ethernet packet, receives the Ethernet packet, and transmits data to the local CPU 123 through the arbitration of the local arbitration logic unit 122.

The local CPU 123 interprets the data and stores the data in a table managing the state of the input / output interface module 200.

By repeating the above operation periodically to manage the information of the system.

As described above, the present invention can reduce the loss of the same logic of each input and output interface module, thereby reducing the cost and improving performance by reducing the retransmission of the same control signal or data. It can be effective.

Claims (2)

In the ATM LAN SWITCH system, the internal process control with the main board or each input / output interface module, The main board module and the input and output interface modules are each an Ethernet controller for controlling data or control signal information to be transmitted and received in an Ethernet packet through an Ethernet bus, A local arbitration logic unit for arbitrating a local bus to transmit data or control signal information received through the Ethernet controller to a local CPU; And a local CPU for interpreting the data or control signal information arbitrated by the local arbitration logic unit. The method of claim 1, Internal process control mediation logic circuit using the Ethernet (Ethernet) characterized in that the slot ID is assigned to recognize the slot in the main board and the input, output interface module.