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Method and system for realizing multi-serial port switching based on CPLD, and board card

A multi-serial port and board card technology, applied in the field of multi-serial port switching based on CPLD, can solve the problems of inflexible port switching, low switching efficiency, large board space, etc., to avoid manual manual switching, save board space, reduce Effects of PCB Board Density and Material Cost

Active Publication Date: 2019-10-22
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a method, system and board for switching between multiple serial ports based on CPLD, so as to solve the problems in the prior art that the port switching is not flexible enough, the switching efficiency is low, and the serial port switching occupies a large space on the board.

Method used

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  • Method and system for realizing multi-serial port switching based on CPLD, and board card
  • Method and system for realizing multi-serial port switching based on CPLD, and board card
  • Method and system for realizing multi-serial port switching based on CPLD, and board card

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Embodiment 1

[0049] see figure 2 , figure 2 It is a schematic flow chart of a method for realizing multi-serial port switching based on CPLD provided by the embodiment of the present application. Depend on figure 2 As can be seen, the method for realizing multi-serial port switching based on CPLD in the present embodiment mainly includes the following processes:

[0050] S1: Obtain the control enable signal and multiple sets of UART signals from the UART module in the BMC of the control terminal.

[0051] Wherein, the UART module in the BMC chip includes a SYS UART module and a BMC UART module, and the SYS UART module sends a SYS UART signal, and the BMC UART module sends a BMC UART signal. The SYS UART module is the system debugging mode, and the BMCUART module is the BMC debugging mode.

[0052] The schematic diagram of the principle of multi-serial port switching based on CPLD in this embodiment can be found in image 3 , image 3 The middle MB is the server motherboard, BMC UA...

Embodiment 2

[0084] exist figure 2 , image 3 and Figure 4 On the basis of the illustrated embodiment see Figure 5 , Figure 5 It is a schematic structural diagram of a system for realizing multi-serial port switching based on CPLD provided by the embodiment of the present application. Depend on Figure 5 It can be seen that the system for realizing multi-serial port switching based on CPLD in this embodiment includes: a signal acquisition module, a signal to be output determination module and an external connector. The signal acquisition module and the output signal determination module can be realized by a CPLD, the input terminal of the external connector is connected with the output terminal of the CPLD, and the output terminal of the external connector is connected with the debug terminal.

[0085] Wherein, the signal acquisition module is used to acquire the control enable signal and multiple sets of UART signals from the UART module in the BMC of the control terminal. The U...

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Abstract

The invention discloses a method and a system for realizing multi-serial port switching based on a CPLD, and a board card. The method comprises the following steps: acquiring a control enable signal and a plurality of groups of UART signals from a UART module in a control end BMC; determining a UART signal to be output from the plurality of groups of UART signals by using a CPLD according to the control enable signal; and outputting the UART signal to be output by using an external connector. The system comprises a signal acquisition module, a to-be-output signal determination module and an external connector. The board card comprises a BMC and a system for achieving multi-serial-port switching based on a CPLD. Through the method and the system, flexible switching of the serial ports can be achieved, the accuracy and switching efficiency of serial port switching can be improved, and the board space and the material cost can be effectively saved.

Description

technical field [0001] The present application relates to the technical field of server board design, in particular to a method, system and board for realizing multi-serial port switching based on CPLD (Complex Programmable Logic Device). Background technique [0002] The serial port is an important part of the server board. Usually, the serial port in the server board is mainly used to transmit the signal directly connected to the UART module in the BMC (Baseboard Management Controller, Baseboard Management Controller) chip at the control end, and through this signal to connect to the external header. With the continuous enhancement of the functions and performances of servers and other electronic products, there are usually multiple serial ports in the server board, and it is often necessary to perform serial port switching among the multiple serial ports of the same server board. [0003] For the current method of serial port switching, see figure 1 ,Depend on figure 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42G06F13/40
CPCG06F13/4282G06F13/4022G06F2213/0002
Inventor 刘纪斌赵伟涛
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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