KR100275528B1 - Adsl subscriber terminal interface apparatus for atm - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an asymmetric digital subscriber line subscriber station matching device.

2. Technical problem to be solved by the invention

An object of the present invention is to provide an asynchronous transfer mode terminal matching device in the form of an interprocessor communication interface bus card.

To provide.

3. Summary of the Solution of the Invention

The present invention provides an asymmetric digital subscriber line subscriber station matching device comprising: asynchronous delivery mode splitting assembly layer processing means for communicating with a host and sending control signals to peripheral devices; Memory storage means for storing data; Asynchronous delivery mode physical layer processing means for communicating with a host and processing input cells; Asymmetric digital subscriber line processing means for converting data to and from each other, exchanging commands and status information, and performing asymmetric digital subscriber line processing and matching with terminals; And command and state storage means for storing instructions from the host and state content of the asymmetric digital subscriber line processing means.

4. Important uses of the invention

The present invention is used to configure a subscriber station for asynchronous delivery mode.

Description

Asymmetric Digital Subscriber Line Subscriber Terminal Matching Device for Asynchronous Transfer Mode {ADSL SUBSCRIBER TERMINAL INTERFACE APPARATUS FOR ATM}

The present invention relates to an asymmetric digital subscriber line subscriber station matching device in an asynchronous delivery mode terminal device.

In general, an asymmetric digital subscriber line between a host and a line in constructing a terminal device for serving various multimedia applications to a subscriber in asynchronous transfer mode (hereinafter referred to as "ATM") in a long distance. (Hereinafter referred to as "ADSL") was connected to the subscriber station using a processing device and a device for converting ATM data into Ethernet data.

1 is an exemplary configuration of a subscriber station for asynchronous delivery mode according to the related art.

As shown in the figure, the conventional ATM subscriber terminal device to the host unit 110, Ethernet matching unit 120, ADSL terminal 130, remote control matching unit 140, audio image processing unit 150 Consists of.

The host unit 110 includes a host memory 111, a processor control interface (hereinafter, referred to as a “PCI”) controller 112, and a central controller 113. The ADSL terminal unit 130 is an ATM. / Ethernet data converter 131, ADSL processor 132.

The host unit 110 may be a personal computer or a workstation. The host memory 111 having a 64M byte capacity of a 32-bit word stores user data or various application programs, and the host memory 111 and the PCI bus. PCI bus controller 112 is connected to control the use of the PCI bus.

The central controller 113 connected to the PCI bus controller 112 includes a processor to control the host and the PCI bus peripherals.

The Ethernet matching unit 120 connected to the PCI bus handles the physical layer function of the Ethernet data transmitted and received with the ATM / Ethernet data converter 131.

The ATM / Ethernet data converter 131 connected to the Ethernet matching unit 120 in the ADSL terminal unit 130 converts the data of the Ethernet frame form output from the Ethernet into the data of the ATM cell form at the time of transmission and the ADSL processor 132. When receiving, the ATM cell data output from the ADSL processor 132 is converted into Ethernet frame data and output to the Ethernet matching unit 120.

The ADSL processor 132 converts the ATM cell data output from the ATM / Ethernet data converter 131 into ADSL frame data at the time of transmission, and outputs the ADSL frame data to the ADSL line, and receives the ADSL frame data input from the ADSL line at the time of reception. The data is converted to data and sent to the ATM / Ethernet data converter 131.

The remote control matching unit 140 connected to the PCI bus is connected to the central controller of the host to remotely control a program running on the host instead of the keyboard or the mouse.

The audio image processing unit 150 connected to the PCI bus processes the audio signal or the video signal of the application program executed in the host and outputs it to the monitor screen.

That is, the conventional ATM subscriber station device is complicated because the configuration of the Ethernet matching unit 120, ATM / Ethernet data converter 131 and ADSL processor 132 between the host and the line is complicated, Since it is separated from each other, it is difficult for the host of the subscriber station to control or manage the peripheral devices.

The present invention has been made to solve the above-described problems, to service a variety of multimedia applications having a high data rate to a remote ATM subscriber that is directly connected to the ADSL subscriber processing unit of the ATM switch. An object of the present invention is to provide an ATM terminal matching device in the form of a PCI bus card.

1 is an exemplary configuration of a subscriber station for asynchronous delivery mode according to the related art.

2 is an exemplary configuration of a subscriber station for asynchronous delivery mode to which the present invention is applied.

3 is an exemplary configuration diagram of an asymmetric digital subscriber line subscriber station matching device according to the present invention;

The present invention for achieving the above object, in the asymmetric digital subscriber line subscriber terminal matching device for the asynchronous delivery mode, asynchronous transfer mode (ATM) split assembly layer processing for communicating with the host and sending a control signal to the peripheral devices Way; Memory storage means for storing various data under the control of the asynchronous transfer mode divisional assembly layer processing means; Asynchronous delivery mode physical layer processing means for communicating with a host and processing an input cell and delivering the received cell to the asynchronous delivery mode divisional assembly layer processing means; An asymmetric digital subscriber line processing means connected to the asynchronous delivery mode physical layer processing means to mutually convert data and match with a terminal; And a command and state storage means connected to the asynchronous delivery mode divisional assembly layer processing means and the asynchronous delivery mode physical layer processing means to store contents of instructions from a host, and to store state contents of the asymmetric digital subscriber line processing means. It includes.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.

2 is an exemplary configuration of a subscriber station for an asynchronous delivery mode to which the present invention is applied, and includes a host unit 210, an ADSL subscriber station matching unit 220, an audio image processing unit 230, and a remote control matching unit 240. Consists of.

The host unit 210 may be a personal computer or a workstation. The host unit 210 may include a host memory 211, a PCI bus controller 212, and a central controller 213.

The host memory 211 has a 64M byte capacity of a 32-bit word and is connected to a PCI bus controller to store user data or various application programs.

The PCI bus controller 212 connected to the host memory 211 is connected to the PCI bus and controls the usage rights of the PCI bus, and the central controller 213 is connected to the PCI bus controller 212 and includes a host and a processor. Controls PCI bus peripherals and connects to terminals.

The ADSL subscriber station matching unit 220 is connected to the PCI bus to communicate with the host, and is connected to the ADSL line to convert data transmission and signal levels through the line, and is connected to the debugging terminal through an independent RS-232C port.

The audio image processing unit 230 is connected to the PCI bus and processes the audio signal or the video signal of the application program executed in the host and outputs it to the monitor screen.

The remote control matching unit 240 is connected to the central controller 213 of the host unit 210 to remotely control a program running on the host instead of a keyboard or a mouse.

3 is an exemplary configuration diagram of an asymmetric digital subscriber line subscriber station matching device according to the present invention, which is connected to a host through a PCI bus and connected to an ADSL line through a subscriber line.

Referring to the drawings will be described the configuration of the present invention.

As shown in the figure, the ADSL subscriber station matching device includes an ATM partitioned assembly layer processor 301, a memory storage unit 302, an ATM physical layer processor 303, a command and state storage unit 304, and an ADSL processor 305. Consists of

The ATM splitting layer processor 301 is connected to the PCI bus to communicate with the host and sends control signals to the peripheral devices.

The memory storage unit 302 is connected to the ATM partition layer processor 301 via a memory bus and a data bus, and is divided into packets to be received from a host under the control of the ATM partition layer processor 301. Or stores ATM cells to be assembled and various user data received from the ATM physical layer processing unit.

The ATM physical layer processing unit 303 is a universal test and operation PHY interface for ATM (hereinafter referred to as "UTOPIA") bus and utility bus that is the ATM splitting layer processing unit 301 and the ATM physical layer standard bus. ATM cell inputted from ADSL processing unit 305 is processed according to ATM physical layer standard and transferred to ATM division assembly layer processing unit 301 through UTOPIA bus, or the reverse function, ATM partition assembly The host communicates with the host through a utility bus connected with the layer processor 301.

The command and state storage unit 304 is connected to the ATM splitting layer processing unit 301 and the ATM physical layer processing unit 303 to store command contents from a host, and stores the state contents of the ADSL processing unit 305. Save it.

The ADSL processing unit 305 is connected to the ATM physical layer processing unit 303, converts TTL level ATM cell serial transmission / reception data into ADSL frame data, and is connected to the command and state storage unit 304 to command and state It sends and receives information and has RS-232C matching with the terminal for debugging.

Referring to the drawings, the operation of each part in the present invention will be described in detail as follows.

The ATM subassembly layer processing unit 301 communicates with the host through the PCI bus with the 32-bit address combined data signals AD31 to AD0 and various control signals.

The control signal includes a bus command signal (C / BE3 to C / BE0) indicating the command of the PCI bus, a parity signal (PAR) indicating the even parity of the address data signal and the bus command signal, and a cycle frame indicating the start and duration of the access. Signal FRAME *, target ready signal TRDY * indicating that the target is ready, sender ready signal IRDY * indicating that the initiator is ready, and receiver requesting the sender to stop the current transaction. Stop signal STOP *, device selection signal DEVSEL * indicating the target device address area, initialization device signal IDSEL * indicating device initialization, parity error signal PERR * indicating parity error of the data signal, device system System error signal (SERR *) indicating an error in the system, bus request signal (REQ *) requiring the use of the PCI bus, and bus permission allowing the use of the PCI bus. A signal (GNT *), an interrupt signal to the host to request an interrupt (INT *), the clock signal (CLK) representing the clock of the PCI bus, and the reset signal indicating the reset of the PCI bus system (RST *).

In addition, various control signals are sent to the devices connected to the ATM split layer processing unit.

The memory storage unit 302 includes the ATM partition layer processing unit 301, a 17-bit memory address signal SA16 to SA0, a 32-bit memory data signal SD31 to SD0, and a memory data write signal for writing data to the memory. (RWE *), memory data read signal (ROE *) to read data from memory, memory select signal (RCS *) to select memory, and store packet data, ATM cell data and various user data in memory Alternatively, the data may be stored in a 32-bit word unit in which the data in the memory is sent to the ATM partition layer processor 301.

The ATM physical layer processing unit 303 is connected to the ATM splitting layer processing unit 301 through a UTOPIA bus and a utility bus, and is connected with various control signals to communicate with each other.

The control signal includes a transmission data signal (TxD7 to TxD0) indicating the data to be transmitted, a transmission cell start signal (TxSOC *) indicating the start of a transmitting cell, a transmission possible signal (TxEN *) indicating that data can be transmitted, A transmission fill signal TxFULL * indicating that the transmission data is full in the buffer, a transmission data clock signal TxCLK indicating the clock of the transmission data, and a transmission parity signal TxPAR indicating the parity of the transmission data, Receive cell start signal RxSOC * to indicate the start of the receiving cell, which is the receive data signals RxD7 to RxD0 and the receive control signals, receiveable signal RxEN * to indicate that data can be received, and receive data is empty in the buffer. Received empty signal (TxEMPTY *), which represents the signal, and the receive data clock signal (RxCLK) that represents the clock of the received data. AD7 ~ UAD0, control signals such as data read signal (URD *), data write signal (UWR *), address latch signal (UALE *), and chip select signal (UCS1 * ~ UCS0 *).

The command and state storage unit 304 is connected to the ATM subassembly processing unit 301 through the address combined data signals UAD7 to UAD0 and the data write signal UWR * and the data read signal URD * of the utility bus. The command from the host is stored, and the state from the ADSL processing unit 305 is read. Reads the contents of the state stored in connection with the ADSL processing unit or writes the contents of the commands through the external data signals D7 to D0, the external data read signal RD *, and the external data write signal WR *. .

The ADSL processor 305 is connected to the ATM physical layer processor 303 by a serial transmission data signal TDAT, a serial transmission data clock signal TCLK, a serial reception data signal RDAT, and a serial reception data clock signal RCLK. , Transmits and receives ATM cell data, and connects to the command and the state by the external 8-bit data signal (D7 ~ D0), external data read signal (RD *), and external data write signal (WR *). It receives and transmits status, and is connected with ADSL line as ADSL frame signal to perform ADSL processing for ADSL framing and deframe, ADSL coding and decoding of TTL level data. Has RS-232C matching.

The overall operation of the present invention will be described in detail with reference to the drawings.

At the time of transmission, the packet type data received from the host unit 210 through the PCI bus is accumulated in the memory storage unit for each virtual path connection by the ATM partition assembly layer processing unit 301, divided into ATM cells, and divided by the ATM cell unit to the ATM physical layer through the UTOPIA bus. Transfer to the processing unit 303.

The ATM physical layer processing unit 303 performs the ATM physical layer transmission processing on the received ATM cell and transmits the serial ATM data to the ADSL processing unit 305 as serial data.

The ADSL processing unit 305 performs ADSL processing for converting TTL level data into ADSL framing and ADSL, and outputs the ADSL line.

At this time, the command and state storage unit 304 stores a command from the host through the ATM splitting layer processing unit 301, reads the contents of the state stored in the ADSL processing unit 305, or writes the contents of the command. Put it in.

At the time of reception, the data received from the ADSL line is ADSL decoded and ADSL deframed by the ADSL processor 305, converted into TTL level data, and sent to the ATM physical layer processor 303.

The ATM physical layer processing unit 303 performs the ATM physical layer reception process on the serial data received from the ADSL processing unit 305, and transmits the serial data in the ATM cell unit to the ATM partition assembly layer processing unit 301.

The ATM splitting layer processing unit 301 accumulates data received in the ATM cell unit from the ATM physical layer processing unit 303 through the UTOPIA bus in a memory storage unit for each virtual path, and assembles it in a packet form to host the unit 210 through the PCI bus. Pass it on.

The ADSL subscriber station matching device configured as described above is connected to an ATM switch as a subscriber of the ADSL line, and provides subscribers of a high speed ATM multimedia service by providing data of various speeds.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

According to the present invention as described above, by implementing the existing Ethernet card, ATM / Ethernet data conversion device and ADSL processing device as an ATM terminal matching device in the form of one PCI bus card, so that the ADSL line can be connected directly. In addition, the structure of the terminal device can be simplified, and the host of the subscriber station device can control and manage peripheral devices to serve various multimedia applications having a high data transfer speed to a remote ATM subscriber.

Claims (5)

An asymmetric digital subscriber line subscriber station matching device for asynchronous delivery mode, An asynchronous delivery mode (ATM) split granulation layer processing means for communicating with a host and sending control signals to peripheral devices; Memory storage means for storing various data under the control of the asynchronous transfer mode divisional assembly layer processing means; Asynchronous delivery mode physical layer processing means for communicating with a host and processing an input cell and delivering the received cell to the asynchronous delivery mode divisional assembly layer processing means; An asymmetric digital subscriber line processing means connected to the asynchronous delivery mode physical layer processing means to mutually convert data and match with a terminal; And Command and state storage means connected to said asynchronous delivery mode divisional assembly layer processing means and said asynchronous delivery mode physical layer processing means to store contents of instructions from a host and to store state contents of said asymmetric digital subscriber line processing means; Asymmetric digital subscriber line subscriber station matching device for asynchronous delivery mode comprising a. The method of claim 1, The asynchronous transfer mode (ATM) split granulation layer processing means, An asymmetric digital subscriber line subscriber station matching device for an asynchronous delivery mode having an address data signal and various control signals, and connected to and communicating with a host through a processor control interface (PCI) bus. The method of claim 1, The memory storage means, A packet is received from the host under the control of the asynchronous delivery mode division assembly layer processing unit by being connected to the asynchronous delivery mode (ATM) division assembly layer processing unit through a memory dedicated address bus and a data bus, and the asynchronous delivery mode physical layer. An asymmetric digital subscriber line subscriber station matching device for the asynchronous delivery mode, characterized in that for storing the asynchronous delivery mode cell and various user data received from the processing unit. The method of claim 1, The asynchronous delivery mode (ATM) physical layer processing means, It is connected to the asynchronous delivery mode splitting assembly processing unit and the universal test operation physical layer asynchronous delivery mode matching bus and utility bus, and communicates with the host through the utility bus, the asynchronous delivery input from the asymmetric digital subscriber line (ADSL) processing unit Asynchronous delivery, characterized in that the mode cell is processed according to the asynchronous delivery mode physical layer standard specification and delivered to the asynchronous delivery mode divisional assembly layer processing unit through the universal test operation physical layer asynchronous delivery mode matching bus, or the reverse function. Asymmetric digital subscriber line subscriber station matching device for mode. The method of claim 1, The command and state storage means, It is connected to the asynchronous transfer mode (ATM) partition assembly processor through the address bus data signal, the data write signal, and the data read signal of the utility bus, and stores an instruction from the host, an external data signal, an external data read signal, and For the asynchronous delivery mode, the contents of the state stored in the asymmetric digital subscriber line processing unit and the contents of the command stored in the asymmetric digital subscriber line processing unit are connected to the asymmetric digital subscriber line processing unit through an external data write signal. Asymmetric digital subscriber line subscriber station matching device.