Testing method for memory voltage of Loongson server motherboard

A test method and server technology, applied in the computer field, can solve problems such as immature and accurate test methods, and achieve the effects of ensuring reliable operation, improving performance and quality, and ensuring accuracy and reliability

Inactive Publication Date: 2013-01-16
DAWNING INFORMATION IND BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The VR solutions adopted by each server motherboard are also very different. The test of the memory voltage is only limited to the size of the voltage and the size of the ripple, and the test method is not mature and accurate.

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  • Testing method for memory voltage of Loongson server motherboard
  • Testing method for memory voltage of Loongson server motherboard
  • Testing method for memory voltage of Loongson server motherboard

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Embodiment Construction

[0048] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0049] DDR3 memory includes two types of 1.5V voltage memory and 1.35V low voltage memory. Regardless of the type of memory, two voltages must be tested: VDDQ and VTT (VDDQ / 2). According to the JEDEC organization's specification requirements for memory operating voltage, the (AC+DC) voltage operating range is as follows:

[0050] memory type VDDQ_Max VDDQ_Min VTT_Max VTT_Min DDR3(1.5V) 1.5+5% 1.5-5% VDDQ*0.51+27mV VDDQ*0.49-27mV DDR3(1.35V) 1.35+7.5% 1.35-5% VDDQ*0.51+27mV VDDQ*0.49-27mV

[0051] The current Loongson server motherboards all use LoongSon3B CPU, which is an 8-core 64-bit processor, 8DIMM slots, and supports a maximum of 64GB DDR3 SDRAM memory.

[0052] A single DIMM slot on the Loongson server motherboard supports 8GB DDR3 SDRAM. According to the power ...

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Abstract

The invention provides a testing method for memory voltage of a Loongson server motherboard, which is as follows: memory power supply adapters are inserted into the Loongson server motherboard, if more than two memory power supply adapters are adopted, the two neighboring memory power supply adapters are connected through an adapter interconnecting wire, probes of oscilloscopes are connected with the memory power supply adapters, and electronic loading devices are connected with the memory power supply adapters through load lines. The invention adopts the electronic loading devices and the oscilloscopes for static and mobile multi-direction memory voltage testing. The testing method can ensure the reliable operation of the memory and improve the performance and quality of the server. Under the actual environment, the testing method utilizes the memory connecting plate to simulate the actual working state of the memory, adopts the electronic loading devices to comprehensively test the working voltage of the memory from different directions in static and movable ways, and can actually and effectively reflect the quality and index of the voltage circuit design of the memory, so as to obtain the accurate testing data.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method for testing the memory voltage of a Loongson server motherboard. Background technique [0002] With the rapid growth of the global server market, Loongson servers with independent intellectual property rights have also developed rapidly. How to ensure the performance, stability and high reliability of the server has become a difficult point in the development and testing process. The latest Loongson server motherboards support memory of different specifications that comply with the DDR3 specification. The current tests for memory are mainly focused on signal quality and simple voltage and ripple tests. Therefore, the maximum power demand of memory cannot be simulated, and real and effective test data and results cannot be obtained. [0003] At present, most memory power supply circuits of server motherboards use DC / DC power supply, and the required current varies according to ...

Claims

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Application Information

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IPC IPC(8): G06F11/22
Inventor 邓建廷刘小亮李华
Owner DAWNING INFORMATION IND BEIJING
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