KR960006332A - Method of generating data for reception function test of user (U) -matching digital circuit - Google Patents

Abstract

The present invention has a purpose to provide a test data generation method for the reception function test required in the design procedure of the U-matching digital chip of the integrated information communication network, the initial value is given to the various variables associated with the first input data A first step of receiving information according to whether to use random or periodic data, a path direction, and a test generation data amount; and after performing the first step, generating analog data for each of attenuation, echo, near-end noise, and noise. A second step of synthesizing data for each noise generated in the first step; a fourth step of generating PDM data from the data synthesized in the third step through a sigma-delta analog-to-digital converter (ADC) A fifth step of generating the PDM data generated in the fourth step until a desired data amount is transmitted and transmitting the same to the target circuit to be tested.

Description

Method of generating data for receiving function test of user (U) -matching digital circuit

As this is a public information case, the full text was not included.

2 is a block diagram of a hardware device to which the present invention is applied.

3 is a flowchart of the overall processing of the test data generation method according to the present invention.

Claims (4)

Attenuated noise data generating means for generating data with mixed attenuation noise, echo noise data generating means for generating data with mixed echo noise, and white Gaussian noise to generate near-end crosstalk path transfer function to generate data with mixed near-end crosstalk noise A central processing unit (CPU) 1, a memory unit 2, an input / output unit 3 for interfacing input and output of data, the central processing unit 1, and a memory unit (2) and the input / output unit 3, a data bus 4, an address bus 5, a control bus 6, and a pulse delta modulation (PDM) for transmitting and receiving data, address and control signals to and from each other. A method for generating data for a reception function test of a U-matching digital circuit for an integrated information communication network applied to a device having an external bus (7) for transmitting data to an external destination circuit, comprising: Given the value and whether the halgeot whether the first input data in a random or periodic data, route direction, a first step of receiving the information in accordance with the generated test data amount; A second step of generating analog data for each of attenuation, echo, and near-end crosstalk noise after performing the first step; A third step of synthesizing each noise data generated in the second step; A fourth step of generating PDM data from the data synthesized in the third step through a sigma-delta analog / digital converter (ADC); And a fifth step of generating the PDM data generated in the fourth step until the desired data amount is transmitted, and then transmitting the PDM data to the target circuit to be tested. How to generate data. The method of claim 1, wherein the attenuation noise analog data generation in the third step comprises: a sixth step of determining whether the first input data is random or periodic data; A seventh step of generating random binary data if the random data is performed and performing periodic binary data if the periodic data is performed after the sixth step; An eighth step of determining a path direction when the input data is generated in the seventh step; In the eighth step, if the direction from the line termination device LT in the path direction to the communication network termination device NT (hereinafter, referred to as the up direction) is applied, the up direction scramble is applied and the communication network is processed. A ninth step of applying a down scramble process if it is a direction from the end device NT side to the rotation end device LT (hereinafter, referred to as a DOWN direction); And a tenth step of encoding the data processed in the ninth step into a 2BIQ code, multiplexing by frame, filtering through a transmission filter, and convolution with an attenuation path impulse transfer function. Method of generating data for receiving function test of digital communication circuit for U-matching information network. The method of claim 1, wherein the generation of the echo noise analog data in the third step comprises: a sixth step of determining whether the first input data is random or periodic data; A seventh step of generating random binary data if random data and periodic binary data if periodic data after the sixth step; An eighth step of determining a path direction when the input data is generated in the seventh step; A ninth step of applying and processing the up direction scramble if the path direction is the up direction, and applying and processing the down direction scramble if the path direction is the down direction; And a tenth step of encoding the data processed in the ninth step into a 2BIQ code, multiplexing on a frame basis, filtering through a transmission filter, and then convolving with the echo path impulse transfer function. Data generation method for receiving function test of digital communication circuit for U-matching information network. 2. The method of claim 1, wherein generating near-end crosstalk noise analog data in the third step comprises: generating a white Gaussian noise; And a seventh step of convolving the white Gaussian noise and the near-end cross-talk path impulse transfer function generated in the sixth step. . ※ Note: The disclosure is based on the initial application.