A display component, motherboard and server of a cpld version

Abstract

The invention relates to a display component, a main board and a server of a CPLD version, wherein the display component comprises: a CPLD, the CPLD is configured to enable pin multiplexing of JTAG pins based on a JTAG mode and output a version display signal through the JTAG pins; JTAG connector, the JTAG connector is connected with the JTAG mode enable pin and the JTAG pin; the power supply circuit, the first end of the power supply circuit is connected with the motherboard power supply, the second end of the power supply circuit is connected with the JTAG connector, and the third end of the power supply circuit connected with the power input pin of the signal CPLD; and a pluggable display module, the display module includes: a plurality of LEDs, the plurality of LEDs can be connected to the JTAG pins of the CPLD through a JTAG connector; a super capacitor, the The supercapacitor can be connected to the second end of the power supply circuit through a JTAG connector. Using this display component, testing or production personnel can obtain information about the CPLD version of the fan board in a timely and fast manner, saving additional time for connecting to the motherboard and building the test environment, and can efficiently and correctly control the CPLD version of the fan board.

Description

technical field [0001] The present invention relates to the technical field of servers. The present invention further relates to a display assembly, a main board and a server of a CPLD version. Background technique [0002] In servers, in order to control the temperature within a certain range, fans are usually used for cooling, and the fans are controlled in a targeted manner. Conventional fan board design often uses CPLD (Complex Programmable Logic Device, complex programmable logic device) to replace fan signal control IC. The main reason is that in addition to the pins used for fan control and error signal LED lighting, CPLD has other pins that can be programmed to produce different functions, so it is more flexible and diverse in use. Because of this, the differences of CPLD versions need to be specially controlled, so as to avoid the situation of mismatching with the hardware design caused by the application of different versions. [0003] In the existing method, a ...

AI Technical Summary

Problems solved by technology

The former may cause an inconsistency between the actual version and the displayed version due to the secondary burning during the test process that changed the CPLD version; the latter requires a motherboard and an entire test environment, and the process of confirming the version is more complicated and costly

That is to say, neither of the above two methods in the prior art can confirm the CPLD version in time and quickly, and the correctness of the control of the fan board CPLD version and the efficiency of test production cannot be effectively improved.

[0004] Therefore, it is necessary to propose an optimized CPLD version display solution to solve the problems in the prior art that the display is not timely enough, accurate and the confirmation process is complicated

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