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Efficient full-duplex BMC and CPLD interconnection communication method

An interconnected communication, full-duplex technology, applied in the field of communication, can solve the problems of limited data transmission, slow transmission speed, and inability to synchronize BMC and CPLD information.

Inactive Publication Date: 2018-05-18
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current method of transmission between BMC and CPLD through I2C and GPIO has slow transmission speed, limited transmission data information, and cannot realize the synchronization of BMC and CPLD information.
The communication method is one-way, and full-duplex communication cannot be realized
A lot of information collected by CPLD cannot be transmitted to BMC in real time, and more pins of BMC and CPLD are occupied

Method used

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  • Efficient full-duplex BMC and CPLD interconnection communication method
  • Efficient full-duplex BMC and CPLD interconnection communication method

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Embodiment Construction

[0020] The content of the present invention is described in more detail below:

[0021] The present invention provides a high-efficiency full-duplex BMC and CPLD interconnection communication method, which uses the Scan chain transmission bus to connect the BMC and CPLD. The BMC chip AST2500 has SGPIO pins, which have the same definition as the Scan chain pins, and can realize the Scan chain. Function. Scan chain is a low-speed signal transmission protocol that converts parallel data into serial data. It is evolved from the SPI bus and consists of four signal lines: CLK, Load, Data in, and Data out. The working principle is as follows: figure 1 .

[0022] like figure 2 As shown, the BMC is the core of the remote detection technology. First, a Scan Chain register is set in the BMC, and the signal represented by each bit of 8 bits in a byte is defined, and then it can be serially transmitted between the BMC and the CPLD. BMC wants to obtain UID_LED status, POWER BUTTON, RST ...

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Abstract

The invention provides an efficient full-duplex BMC and CPLD interconnection communication method, and relates to the technical field of communication. According to the efficient full-duplex BMC and CPLD interconnection communication method provided by the invention, interconnection communication is performed between a BMC and a CPLD through a Scan chain, and fault, ERROR, Thermal trip, throttle,button status and LED stats signals collected by the CPLD can be directly transmitted to the BMC, the BMC collects card board information, temperature, voltage and other information through I2C and transmits the information to the CPLD, and some control fan rate, LED status and power-on and power-off signals are transmitted to the CPLD. The number of pins used by the BMC is reduced, and fast information exchange between the BMC and the CPLD is achieved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an efficient full-duplex BMC and CPLD interconnection communication method. Background technique [0002] With the rapid development of computer and Internet technology, more and more information is stored in the server, and the stability of the server is becoming more and more important. Network monitoring technology is an important technology to ensure the stable operation of the server. It mainly monitors whether the chassis, fan, memory, processor, system information, temperature, voltage or third-party hardware of the server are running normally through BMC. Users can log in through ordinary clients If there is an alarm message on the BMC (Baseboard Management Controller) system of any server in use on the network, the server can be started, shut down or reset directly through the network, which greatly facilitates management and maintenance. [0003] The related chas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/14H04L12/40G06F13/40
CPCG06F13/4009H04L5/1438H04L12/4013
Inventor 王培培
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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