Circuit structure of PXIe board card and PXI system
By using PCIe to USB chips on PXIe boards to convert PCIe signals into USB signals, the problem of high costs caused by complex design of existing PXIe boards is solved, and a low-cost and low-complexity circuit structure is achieved.
Patent Information
- Application Number
- CN202421863853.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The complex design of existing PXIe boards leads to high costs.
The PCIe to USB chip is used to convert the PCIe signal into a USB signal, reducing the requirements for the controller, and communicating with the device through a simple application program interface.
It reduces the overall cost and design difficulty of the system, and realizes a low-cost and low-complexity PXIe board circuit structure.
Smart Images
Figure CN223051710U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuits, and particularly relates to a circuit structure of a PXIe board and a PXI system. Background Art
[0002] In the existing design of PXIe boards, most of them adopt high-end FPGA chips to support PCIe high-speed communication, such as NI PXIe-5160 and PXIe-4139. This solution requires the selection of FPGA chips that support the PCIe interface. Generally, the price of FPGA chips that support PCIe is relatively high and the circuit is relatively complex, and dedicated driver programs are required. For manufacturers with weak development capabilities, stability is a major problem. Another mainstream design uses the PCIe-to-PCI solution for design to reduce the requirements for FPGA chips, such as the NI PXIe-8370 remote card. This solution requires the use of PCIe-to-PCI chips and FPGA chips, resulting in a large board area occupation. The design cost is lower than the first solution, but in some simple application scenarios, the overall structure and price of the device are still relatively high. In summary, the existing design of PXIe boards is complex, resulting in high costs. Content of the Utility Model
[0003] In view of this, it is necessary to provide a circuit structure of a PXIe board and a PXI system to solve the technical problem that the existing design of PXIe boards is complex and results in high costs.
[0004] To solve the above problems, on the one hand, the utility model provides a circuit structure of a PXIe board, including:
[0005] An application circuit;
[0006] A controller for receiving USB signals;
[0007] A PXIe connector for receiving input PCIe signals;
[0008] A PCIe-to-USB chip, electrically connected to the application circuit through the controller and electrically connected to the PXIe connector, for obtaining PCIe signals through the PXIe connector, converting the PCIe signals into USB signals, and outputting the USB signals to the application circuit through the controller.
[0009] In a possible implementation, the application circuit, the controller, the PCIe-to-USB chip, and the PXIe connector are all arranged on the same PXIe board.
[0010] In a possible implementation, the PXIe connector is arranged at the edge of the PXIe board.
[0011] In a possible implementation, the number of layers of the PXIe board does not exceed 2 layers.
[0012] In a possible implementation, the controller is an MCU chip.
[0013] In a possible implementation, the USB signal is a signal supporting the USB2.0 standard interface.
[0014] In a possible implementation, the USB signal is a signal supporting the USB3.0 standard interface.
[0015] In a possible implementation, the controller is an FPGA chip.
[0016] In a possible implementation, the circuit structure of the PXIe board further includes: a power interface, and the power interface is electrically connected to the application circuit, the controller, and the PXIe connector respectively.
[0017] On the other hand, the present utility model also provides a PXI system, including the circuit structure described in any one of the above.
[0018] The beneficial effects of adopting the above implementation are as follows: For the circuit structure of the PXIe board and the PXI system provided by the present utility model, a PCIe-to-USB chip is used to convert the PCIe signal into a USB signal, thereby reducing the requirements for the controller. Generally, the price of PCIe-to-USB chips on the market is relatively low, about 20 yuan per chip, and the cost of the entire set of controllers can be controlled within 50 yuan. There is no need to develop PC-side driver code, and communication with the device can be achieved through a simple application program interface, greatly reducing the development difficulty. The existing PCIe-to-USB chips are small in size and have simple wiring. In summary, the present utility model converts the PCIe signal into a USB signal through a PCIe-to-USB chip to reduce the requirements for the controller, reduce the overall cost and design difficulty of the system, and solve the technical problem that the existing PXIe board design is complex and results in high costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0020] Figure 1 It is a schematic diagram of the circuit structure of the PXIe board provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.
[0022] In the description of the embodiments of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.
[0023] In the embodiments of the present utility model, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment that includes a series of steps or modules does not necessarily have to be limited to those clearly listed steps or modules, but may include other steps or modules that are not clearly listed or are inherent to these processes, methods, products or equipment.
[0024] In the embodiments of the present utility model, the naming or numbering of steps does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The named or numbered process steps can be changed in the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.
[0025] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0026] The present utility model provides a circuit structure of a PXIe board and a PXI system, which will be described separately below.
[0027] As Figure 1 shown, the present utility model provides a circuit structure of a PXIe board, which includes:
[0028] An application circuit 101;
[0029] A controller 102 for receiving USB signals;
[0030] A PXIe connector 103 for receiving input PCIe signals;
[0031] The PCIe-to-USB chip 104 is electrically connected to the application circuit 101 through the controller 102 and is also electrically connected to the PXIe connector 103. It is used to obtain PCIe signals through the PXIe connector 103, convert the PCIe signals into USB signals, and output the USB signals to the application circuit 101 through the controller 102.
[0032] It can be understood that the PXIe board can also be called a PXIe signal processing platform, which is an electronic measuring instrument used in the field of electronic and communication technologies. PCIe is a high-speed serial computer expansion bus standard, USB is a universal serial bus, PXI is a PCI extension for instrument systems, and PCI is a standard for defining local buses.
[0033] As Figure 1 shown, the PCIe-to-USB chip 104 converts PCIe signals into USB signals, is recognized as a USB host by the upper computer, mounts the controller 102 required by the PXIe system under the PCIe-to-USB chip 104 through USB, and enumerates the USB devices to be displayed. This controller 102 only needs to support the USB slave (an MCU or a low-end FPGA (Field Programmable Gate Array) chip can be selected). The PC side communicates with the controller 102 through the enumerated USB devices, reducing the device development difficulty and circuit complexity.
[0034] Compared with the traditional solution using high-end FPGA chips and the PCIe-to-PCI+FPGA solution, the circuit structure provided by the present utility model has lower costs and lower design difficulties. The overall price of high-end FPGA chips supporting PCIe is above 200 yuan per chip. In addition, DDR, Flash, and power supply chips, etc. need to be supported, and the overall price is not less than 500 yuan per set. Moreover, the chips are basically BGA packaged, and an 8-layer or more board is required for smooth PCB layout, correspondingly increasing the PCB manufacturing cost. The PCIe-to-PCI+FPGA chip solution generally has a price higher than 200 yuan per set, and there are relatively more PCI bus lines, occupying a larger board area. A 4-layer or more board is required for smooth PCB layout.
[0035] For the circuit structure provided by the present utility model, for scenarios with relatively low communication speed requirements, an MCU controller 102 + USB2.0 can be selected; for high-speed requirements, USB3.0 can be selected. Generally, the price of a PCIe to USB chip 104 on the market is about 20 yuan per piece, and the cost of the entire set of controller 102 can be controlled within 50 yuan. Moreover, for the software part, a driverless solution such as WinUSB can be directly used, without the need to develop PC-side driver code, and communication with the device can be achieved through a simple application programming interface, greatly reducing the development difficulty. The existing PCIe to USB chip 104 has a small area and simple wiring, and the circuit structure provided by the present utility model can be laid out using a two-layer board.
[0036] There are also solutions such as converting PCIe to parallel port and converting PCIe to serial port to achieve the same technical solution. However, the communication rates of the above two solutions are generally low, and custom device display cannot be achieved in the device manager.
[0037] The key point of the present utility model is to convert the PCIe interface into other communication interfaces in the PXI system to reduce the requirements for the controller 102, and reduce the overall system cost and design difficulty.
[0038] In some embodiments, the application circuit 101, the controller 102, the PCIe to USB chip 104, and the PXIe connector 103 are all arranged on the same PXIe board.
[0039] The PXIe connector 103 is arranged at the edge of the PXIe connector 103.
[0040] It can be understood that the application circuit 101 and the PXIe connector 103 are located on both sides of the PCIe to USB chip 104 and the controller 102.
[0041] In some embodiments, the number of layers of the PXIe board does not exceed two layers.
[0042] It can be understood that the existing PCIe to USB chip 104 has a small area and simple wiring, and the circuit structure provided by the present utility model can be laid out using a two-layer board.
[0043] In some embodiments, the controller 102 is an MCU chip.
[0044] In some embodiments, the USB signal is a signal supporting the USB2.0 standard interface.
[0045] It can be understood that for some scenarios with relatively low communication speed requirements, a combined solution of MCU controller 102 + USB2.0 can be selected.
[0046] In some embodiments, the USB signal is a signal that supports the USB3.0 standard interface.
[0047] It can be understood that for those with high requirements for communication rate, the combination scheme of MCU controller 102 + USB3.0 can be selected.
[0048] In some embodiments, the controller 102 is an FPGA chip.
[0049] In some embodiments, the circuit structure of the PXIe board further includes: a power interface, and the power interface is electrically connected to the application circuit 101, the controller 102, and the PXIe connector 103 respectively.
[0050] It can be understood that the power interface can supply power to the application circuit 101, the controller 102, and the PXIe connector 103 after the power is turned on.
[0051] In summary, the circuit structure of the PXIe board provided by the present utility model includes: an application circuit 101 provided on the PXIe board; a controller 102 for receiving USB signals; a PXIe connector 103 for receiving input PCIe signals; a PCIe to USB chip 104, which is electrically connected to the application circuit 101 through the controller 102 and is electrically connected to the PXIe connector 103, and is used to obtain PCIe signals through the PXIe connector 103, convert the PCIe signals into USB signals, and output the USB signals to the application circuit 101 through the controller 102.
[0052] The circuit structure provided by the present utility model uses a PCIe to USB chip 104 to convert PCIe signals into USB signals, thereby reducing the requirements for the controller 102. Generally, the price of the PCIe to USB chip 104 on the market is relatively low, about 20 yuan per piece, and the cost of the entire set of controller 102 can be controlled within 50 yuan. There is no need to develop PC-side driver code, and communication with the device can be achieved through a simple application program interface, which greatly reduces the development difficulty. The existing PCIe to USB chip 104 has a small area and simple wiring. In summary, the PCIe to USB chip 104 of the present utility model converts PCIe signals into USB signals to reduce the requirements for the controller 102, reduce the overall cost and design difficulty of the system, and solve the technical problem that the existing PXIe board design is complex and results in high costs.
[0053] The present utility model also provides a PXI system, which includes the circuit structure described in any one of the above.
[0054] The above has introduced in detail the circuit structure of the PXIe board and the PXI system provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those skilled in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.
Claims
1. A circuit structure of a PXIe board, characterized in that: Included on PXIe boards: Application circuit; A controller, used for receiving USB signals; PXIe connector, used to receive input PCIe signals; The PCIe to USB chip is electrically connected to the application circuit through the controller and to the PXIe connector, and is used to obtain PCIe signals through the PXIe connector, convert the PCIe signals into USB signals, and output the USB signals to the application circuit through the controller.
2. The circuit structure of the PXIe board according to claim 1, characterized in that: The application circuit, the controller, the PCIe to USB chip and the PXIe connector are all arranged on the same PXIe board.
3. The circuit structure of the PXIe board according to claim 2, characterized in that: The PXIe connector is disposed at an edge of the PXIe connector.
4. The circuit structure of the PXIe board according to claim 2, characterized in that: The number of layers of the PXIe board does not exceed 2.
5. The circuit structure of the PXIe board according to claim 1, characterized in that: The controller is an MCU chip.
6. The circuit structure of the PXIe board according to claim 5, characterized in that: The USB signal is a signal that supports the USB 2.0 standard interface.
7. The circuit structure of the PXIe board according to claim 5, characterized in that: The USB signal is a signal that supports the USB 3.0 standard interface.
8. The circuit structure of the PXIe board according to claim 1, characterized in that: The controller is a FPGA chip.
9. The circuit structure of the PXIe board according to any one of claims 1 to 8, characterized in that: Also includes: A power interface is electrically connected to the application circuit, the controller and the PXIe connector respectively.
10. A PXI system, characterized in that: The invention comprises the circuit structure as described in any one of claims 1 to 9.