Ruggedized computer core board based on Loongson 3A4000 processor

Abstract

The utility model belongs to the technical field of computer mainboards, and particularly relates to a ruggedized computer core board based on a Loongson 3A4000 processor. Comprising a front design processor, a bridge chip, a memory, an SPI flash chip, a video memory and a temperature sensor, and a back design MXM reinforced connector and a voltage sensor. The processor is a Loongson 3A4000, and the bridge sheet is a Loongson 7A1000; the model of the memory particles is SM41J256M16M of national microelectronics; comprising four paths of USB2.0 interfaces, two paths of RGMII interfaces, one path of LPC interface, two paths of SATA2.0 interfaces, two paths of UART serial ports, one path of SPI interface, four paths of GPIO interfaces, one path of VGA interface, one path of DVO interface and two paths of PCIE X4 interfaces, and interface pins are led out through an MXM reinforced connector. The problems that an existing domestic Loongson processor core board is single in interface and poor in adaptability are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of computer mainboards, and in particular relates to a reinforced computer core board based on a Loongson 3A4000 processor. Background Art

[0002] In recent years, computers based on domestic processor platforms such as Loongson are developing and applying rapidly, and the requirements for the localization rate are gradually increasing. The problems that come with it are high computer development costs, severe customization, and weak interface expansion capabilities. In response to the above problems, a core board module based on the Loongson 3A4000 processor and the 7A1000 bridge chip architecture was invented to achieve a fully domesticated design, provide a rich interface, and have strong scalability. At the same time, the core board design form of the MXM reinforced connector is selected, which greatly enhances the universality of the processor of this architecture and has a high economic value. It can better and more flexibly meet the needs of military and commercial use. Utility Model Content

[0003] The utility model aims to provide a reinforced computer core board based on the Loongson 3A4000 processor.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the front of the computer core board is provided with a processor, a bridge chip, a memory, a SPI flash; a chip, a video memory, and a temperature sensor, and the back is provided with an MXM reinforced connector and a voltage sensor; the processor is Loongson 3A4000, the bridge chip is Loongson 7A1000; the memory particle model is SMIC SM41J256M16M.

[0005] The processor includes 2 UART serial ports, 4 GPIOs, and 1 SPI interface; the bridge chip includes 4 USB2.0 interfaces, 2 RGMII interfaces, 1 LPC interface, 2 SATA2.0 interfaces, 1 DVO interface, and 2 PCIE X4 interfaces, among which 1 DVO interface is converted into 1 VGA interface through a conversion chip, and the other interface pins are brought out through an MXM reinforced connector.

[0006] Furthermore, A1, A2, B1, B2 are 2-way UART serial port pins; C1-C4, D1-D4 are LPC interface pins, and are also compatible with audio signal definitions; A11-A16, B11-B16, C11-C16, D11-D16 are 1-way DVO signal pins; A5-A8, B5-B7 are 1-way VGA signal pins; A17-A24, B17-B24, C17-C24, D17-D24 are 2-way RGMII interface pins; A25-A30, B25-B30 are 2-way SATA2.0 interface pins; C25-C30, D25-D30 are 4-way USB2.0 interface pins; A31-A43, B31-B43, C31-C43, D31-D43 are 2-way PCIE X4 interface pins; A49, A50, B49, B50, C49, C50, D49, D50 are power pins.

[0007] Furthermore, the SPI flash chip loads PMON and boots the operating system, and burns the PMON into the SPI flash. The SPI flash chip communicates with the processor SPI interface via the SPI bus to achieve the loading of the PMON firmware after power-on.

[0008] Furthermore, the MXM reinforced connector is the 158 factory inter-board reinforced connector series CTOLC / CSOLC, with a plug-in height of 10 mm.

[0009] Furthermore, the temperature sensor is LC75 of China Electronics 47 Institute, and the voltage sensor is HWD7417 of Chengdu Huawei; the temperature sensor and the voltage sensor communicate with the I2C bus interface of 7A1000 through the I2C bus respectively, so that the temperature and voltage values ​​are read and reported through the I2C bus.

[0010] Furthermore, the extended SATA interface of the MXM reinforced connector is connected to a hard disk, in which operating system files are placed. After the core board is powered on, the operating system in the hard disk communicates and is loaded with the processor through the SATA interface.

[0011] Furthermore, the core board has a size of 125 mm x 90 mm, and the core board integrates 10 screw holes with a diameter of 2.7 mm, and the screw holes are grounded.

[0012] Compared with the prior art, the beneficial effects of the present invention are: (1) the present invention is a fully domestically designed product, providing a rich interface expansion capability; (2) the size of the core board of the present invention is 125mm x 95mm, which is flexible to adapt and can be used with carrier boards of different interfaces to achieve customization of computers with different interfaces; (3) the reinforced connector design of the present invention has better impact resistance and environmental adaptability; (4) the custom interface form and signal definition of the present invention have better expansibility and practicality.

[0013] In order to more clearly illustrate the functional characteristics and structural parameters of the utility model, further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 This is the overall design block diagram of the core board of this utility model;

[0016] Figure 2 This is the device layout diagram on the front of the core board of the utility model;

[0017] Figure 3 This is the device layout diagram on the back of the core board of the utility model;

[0018] Figure 4 This is the pin distribution diagram of the MXM reinforced connector of the core board of the utility model.

[0019] The reference numerals in the figure are: 1. processor; 2. bridge chip; 3. memory; 4. SPI flash chip; 5. screw hole; 6. cooling fan power supply interface; 7. video memory; 8. MXM reinforced connector; 9. voltage sensor; 10. temperature sensor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Combination Figure 1 , Figure 2 , Figure 3The computer core board of the utility model is provided with a processor (1), a bridge chip (2), a SPI flash chip (4), a memory (3), a video memory (7), a temperature sensor (10), a voltage sensor (9), an MXM reinforced connector (8), a power supply system, a clock system and a PCB.

[0022] The processor is 3A4000 from Loongson, with a main frequency of 1.2GHz; the bridge chip is 7A1000 from Loongson, with 8GB DDR3 memory; the SPI flash chip is GD25QS0 from GigaDevice, and the memory and video memory particles are SM41J256M16M from SMIC, with a memory size of 8GB and a video memory of 512MB. The processor is connected to the bridge chip via the HT3.0 bus, to the SPI flash chip via the SPI bus, and to the memory particles via the DDR3 interface.

[0023] The bridge chip (2) expands a VGA interface through the GM7123 video conversion chip of Chengdu Zhenxin Company, expands the video memory through the DDR3 interface, expands the voltage sensor (9) and the temperature sensor (10) through the I2C bus interface, and collects voltage and temperature information. The remaining SATA interfaces, USB interfaces, PCIE interfaces, LPC interfaces, RGMII interfaces, GPIO interfaces, and DVO interfaces are directly connected to the MXM reinforced connector (8). The SATA interface is used to expand the hard disk, the RGMII interface is used to expand the Ethernet, and the PCIE interface can be configured in the form of 2-way X4 or 1-way X4 and 4-way X1.

[0024] The MXM reinforced connector (8) is a 200-pin connector of the AVIC Optronics CSOLC series with a plug-in height of 10 mm. The connector PCB pinout is as follows: Figure 4 The signal arrangement in the MXM reinforced connector (8) is customized, wherein A1, A2, B1, B2 are UART serial port pins; C1-C4, D1-D4 are LPC interface pins, and are compatible with audio signal definitions; A11-A16, B11-B16, C11-C16, D11-D16 are DVO signal pins; A5-A8, B5-B7 are VGA signal pins; A17-A24, B17-B24, C17-C24, D17-D24 are GMAC interface pins; A25-A30, B25-B30 are two-way SATA interface pins; C25-C30, D25-D30 are four-way USB2.0 interface pins; A31-A43, B31-B43, C31-C43, D31-D43 are two-way PCIE X4 interface pins; A49, A50, B49, B50, C49, C50, D49, D50 are power pins.

[0025] The SPI flash chip (4) loads PMON and boots the operating system, and burns the PMON into the SPI flash chip (4). The SPI flash chip (4) communicates with the processor SPI interface via the SPI bus to achieve the loading of the PMON firmware after power-on.

[0026] Furthermore, the MXM reinforced connector (8) is a 158 factory inter-board reinforced connector series CTOLC / CSOLC, with a plug-in height of 10 mm.

[0027] Furthermore, the temperature sensor (9) is LC75 of China Electronics 47 Institute, and the voltage sensor (10) is HWD7417 of Chengdu Huawei; the temperature sensor (9) and the voltage sensor (10) communicate with the 12C bus interface of 7A1000 through the 12C bus respectively, so that the temperature and voltage values ​​are read and reported through the 12C bus.

[0028] Furthermore, the extended SATA interface of the MXM reinforced connector (8) is connected to a hard disk, in which operating system files are placed. After the core board is powered on, the operating system in the hard disk communicates with and is loaded into the processor via the SATA interface.

[0029] Furthermore, the core board has a size of 125 mm x 90 mm, and the core board integrates 10 screw holes with a diameter of 2.7 mm, and the screw holes are grounded.

[0030] Combination Figure 2 , Figure 3 The screw holes (5) are used to fix the core board, all of which are metallized and connected to the chassis ground. The diameter of the screw holes is 2.7 mm, and there are 10 of them in total. The memory (3) adopts a double-sided paste layout with an ECC design, and uses 20 memory chips in total.

[0031] A cooling fan power supply interface (6) is placed on the front of the core board, which can provide a fan power supply interface for devices such as the CPU that need heat dissipation; the MXM reinforced connector (8) on the back of the core board is placed close to the bottom of the core board, which is more convenient for plugging and unplugging the core board and PCB wiring.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reinforced computer core board based on the Loongson 3A4000 processor, characterized in that: The front of the computer core board is provided with a processor (1), a bridge chip (2), a memory (3), a SPI flash chip (4), a video memory (7), and a temperature sensor (9), and the back is provided with an MXM reinforced connector (8) and a voltage sensor (10); The processor (1) is Loongson 3A4000, the bridge chip (2) is Loongson 7A1000; the memory (3) particle model is SMIC SM41J256M16M.

2. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 1, characterized in that: The processor (1) includes 2 UART serial ports, 4 GPIOs, and 1 SPI interface; the bridge chip (2) includes 4 USB2.0 interfaces, 2 RGMII interfaces, 1 LPC interface, 2 SATA2.0 interfaces, 1 DVO interface, and 2 PCIE X4 interfaces, wherein the 1 DVO interface is converted into a 1 VGA interface through a conversion chip, and the other interface pins are led out through an MXM reinforced connector (8).

3. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 2, characterized in that: A1, A2, B1, B2 are 2-way UART serial port pins; C1-C4, D1-D4 are 1-way LPC interface pins, and are also compatible with audio signal definitions; A11-A16, B11-B16, C11-C16, D11-D16 are 1-way DVO signal pins; A5-A8, B5-B7 are 1-way VGA signal pins; A17-A24, B17-B24, C17-C24, D17-D24 are 2-way RGMII interface pins; A25-A30, B25-B30 are 2-way SATA2.0 interface pins; C25-C30, D25-D30 are 4-way USB2.0 interface pins; A31-A43, B31-B43, C31-C43, D31-D43 are 2-way PCIE X4 interface pins; A49, A50, B49, B50, C49, C50, D49, D50 are power pins.

4. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 3, characterized in that: The SPI flash chip (4) loads PMON and boots the operating system, and burns the PMON into the SPI flash chip (4). The SPI flash chip (4) communicates with the processor SPI interface via the SPI bus to achieve the loading of the PMON firmware after power-on.

5. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 4, characterized in that: The MXM reinforced connector (8) is a 158 factory inter-board reinforced connector series CTOLC / CSOLC, with a plug-in height of 10 mm.

6. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 5, characterized in that: The temperature sensor (9) is LC75 from China Electronics 47 Institute, and the voltage sensor (10) is HWD7417 from Chengdu Huawei. The temperature sensor (9) and the voltage sensor (10) communicate with the I2C bus interface of 7A1000 via the I2C bus, respectively, so that the temperature and voltage values ​​can be read and reported via the I2C bus.

7. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 6, characterized in that: The extended SATA interface of the MXM reinforced connector (8) is connected to a hard disk, in which operating system files are placed. After the core board is powered on, the operating system in the hard disk communicates with and is loaded by the processor through the SATA interface.

8. The reinforced computer core board based on the Loongson 3A4000 processor according to claim 7, characterized in that: The core board has a size of 125 mm x 90 mm, and the core board integrates 10 screw holes with a diameter of 2.7 mm, and the screw holes are grounded.

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