Method and system for testing LPC signal, equipment and medium

Abstract

The invention discloses a method and a system for testing an LPC signal, equipment and a storage medium. The method comprises the following steps: carrying out spot measurement on signals at two ends of a PCH and a communication object at the same time, and storing the obtained signals as waveforms; determining a part in which read-write signals exist at the same time according to the waveforms, and determining a receiving end of a test signal according to a rising edge and a falling edge in the part; testing a time sequence of a signal corresponding to the receiving end, and judging whether the time sequence meets requirements or not; and determining that the LPC signals of the PCH and the communication object are complete in response to the condition that the time sequence meets the requirements. According to the invention, the receiving end of the test signal is determined according to change conditions of the signal at the rising edge and the falling edge, so that the time and manpower for testing the LPC signals can be greatly reduced, and the test efficiency is improved.

Description

technical field [0001] The present invention relates to the testing field, and more specifically refers to a method, system, computer equipment and readable medium for testing LPC signals. Background technique [0002] In today's era, as the clock frequency increases day by day, the signal integrity problem becomes more and more serious, and the time used by designers to solve the signal integrity problem and design new products is also shortened day by day. Product designers have only one chance to bring a product to market, so the product has to work right the first time. In order to ensure the smooth operation of the server and the perfect use of the interfaces and components of the server, it is particularly important to measure the signals of the server. LPC bus, formerly known as Low pin count Bus (low pin count bus), is used in IBM (International Business Machines) PC (Personal Computer, personal computer) compatible machines to connect low-bandwidth devices and low-...

AI Technical Summary

Problems solved by technology

[0003] At present, the signal integrity test and judgment for LPC (low pin count) signal is a relatively cumbersome process

On the server, the LPC signal is usually used for communication between PCH and BMC (Baseboard Management Controller, baseboard management controller) and PCH and CPLD (Complex Programmable Logic Device, complex programmable logic device), and each has four bidirectional DATA (data) When measuring signals, it is necessary to test the signal receiving end. It is difficult to judge the receiving and sending ends of two-way signals. location, more difficult

In addition, the traditional test method needs to use three probes at the same time for spot testing. It is difficult for one person to operate and it is easy to short-circuit the motherboard.

In addition, when measuring timing, it is necessary to manually find the corresponding read and write waveforms and determine the position of the receiving end, which is a waste of manpower and time

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