Signal processing circuit

Abstract

The present invention relates to a signal processing circuit, which is arranged on the motherboard in the machine case of an electronic system. An identification module is arranged on the motherboard. The signal processing circuit comprises a plurality of signal providing units which are used for providing power signals, a plurality of signal receiving units which are electrically connected with the signal providing units through a plurality of signal transmitting units, and at least one switching unit which is electrically connected with at least one signal transmitting unit and is used for switching to correspondingly convert the power signals, so that the identification module (electrically connected with the signal receiving unit) can perform the identification program of the identification signals of the main system information according to the correlative relationship between the predefined identification signals of the main system information and the information of the first category of the system, in order to acquire the information of the first category of the electronic system. Therefore, the present invention prevents the defect that the electronic system without a backboard can not identify the identification signals of the main system.

Description

technical field [0001] The present invention relates to a signal processing circuit, in particular to a signal processing circuit which is applied to the main board in the case of an electronic system and is switched to provide the electronic system with system identification (System ID) signal identification. Background technique [0002] The motherboard of a general computer or server system is usually provided with more than one expansion interface port, so as to flexibly select various external interface devices with different functions (for example: power supply, printer, scanner or floppy hard disk) according to the needs of users. and other equipment), and integrate the main board and its external interface devices into a case (case), which is convenient for users to disassemble and carry. Therefore, in order to simplify the setting and manufacturing process, different system identification (System ID) signals are defined for commonly used system type and size informa...

AI Technical Summary

Problems solved by technology

[0004] However, since the above-mentioned existing system identification digital codes are all set on the backplane, the BIOS or BMC system needs to be directly electrically connected to the backplane circuit to obtain all identification system configuration information. Therefore, once the system does not configure the backplane, That is, it is impossible to identify the number of CPUs and the configuration information of the main system such as the chassis type. If the pull down resistor is used, it will still cause troubles in production, and the operability is also poor.

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