Single-board computer based on loongson 2F central processing unit (CPU) as well as reset management and using method of single-board computer

Abstract

The invention discloses a single-board computer based on a loongson 2F central processing unit (CPU) as well as a reset management and using method of the single-board computer. The single-board computer comprises the loongson 2F CPU, a double data rate 2 (DDR2) memory module, a VersaModule Eurocard (VME) bus interface module, a gigabit network module, a mini peripheral component interconnect (MINI PCI) slot, a reset management circuit, a system clock source, a PCI clock source, a power module, a firmware FLASH circuit, a real-time clock, a watchdog circuit, an 8-position double in-line package (DIP) switch, an inter-integrated circuit (I2C) bus interface circuit, a serial port and peripherals, wherein the loongson 2F CPU is connected with the gigabit network module, the MINI PCI slot and the VME bus interface module through a PCI bus and is coupled with a VME bus connector; and the real-time clock, the watchdog circuit, the 8-position DIP switch, the I2C bus interface circuit, the serial port and the peripherals are connected with the loongson 2F CPU through a LOCAL_IO interface. Due to the design, the single-board computer solves the problem about large-scale industrialization of the loongson 2F CPU and has the advantages of high performance, low cost and low power consumption.

Description

technical field [0001] The invention relates to a single-board computer, in particular to a single-board computer based on the Loongson 2F CPU and its reset management and use methods. Background technique [0002] At present, in the control system and data acquisition system of high-energy physics experiments, single-board computers with VME (VersaModule Eurocard) bus interface are widely used as the front-end nodes of the system. Generally speaking, these front-end nodes are deployed in the experimental site and work in a relatively harsh environment, which requires the single-board computer to have the characteristics of high stability and long life. At the same time, due to the limitation of the environment on power consumption, these single-board computers are required to have a high performance-to-power ratio. Due to the large number of uses, there are also more restrictions on the cost of front-end nodes. The single-board computers currently used in high-energy phys...

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Problems solved by technology

These single-board computers generally have disadvanta

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