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CN-122027586-A - Data transmission interface structure and equipment for portable acquisition equipment

CN122027586ACN 122027586 ACN122027586 ACN 122027586ACN-122027586-A

Abstract

The invention relates to a data transmission interface structure for portable acquisition equipment, which comprises a bridge chip, wherein one side of the bridge chip is a PCIe interface, the other side of the bridge chip is a USB4 interface, the bridge chip is connected with an FPGA (field programmable gate array) through the PCIe interface, the bridge chip is connected with a Type C interface through the USB4 interface, the bridge chip converts the PCIe interface of the FPGA into the USB4 interface, and the USB4 interface is connected with external equipment provided with the USB4 interface. The data transmission interface structure and the device for the portable acquisition device have the advantages of high transmission bandwidth and portability. The USB4 IF provides that the maximum transmission bandwidth of the USB4 is 40Gbps, the computer communicates with the FPGA through a USB4 interface, the theoretical transmission rate is 3.9GB/S, the problems of cable, signal integrity and the like are solved, the actually measured transmission rate is 2.5GB/S, and the transmission bandwidth of 2.5GB/S can meet the transmission bandwidth of most portable acquisition equipment.

Inventors

  • LI JINGYU
  • LI GUANGXING

Assignees

  • 创远信科(上海)技术股份有限公司

Dates

Publication Date
20260512
Application Date
20251216

Claims (8)

  1. 1. The data transmission interface structure for the portable acquisition equipment is characterized by comprising a bridge chip, wherein one side of the bridge chip is a PCIe interface, the other side of the bridge chip is a USB4 interface, the bridge chip is connected with an FPGA (field programmable gate array) through the PCIe interface and is connected with a Type C interface through the USB4 interface, and the bridge chip converts PCIe protocol data of the FPGA into USB4 protocol data and is connected with external equipment provided with the USB4 interface through the USB4 interface.
  2. 2. The data transmission interface structure for portable acquisition equipment according to claim 1, wherein the bridge chip is connected with the FPGA through a PCB trace, and the bridge chip is connected with the USB4 interface through a PCB trace.
  3. 3. The data transmission interface structure for a portable acquisition device according to claim 1, wherein the bridge chip uses an ASM2464PD chip, the PCIe interface is a PCIe 3.0 x4 interface, and the bridge chip converts the PCIe 3.0 x4 interface of the FPGA into a USB4 interface.
  4. 4. The data transmission interface structure for portable acquisition equipment according to claim 1, wherein the structure is connected with the radio frequency acquisition equipment by means of a golden finger plug-in card and is connected with a PC end by means of a Type C interface.
  5. 5. The data transmission interface structure for portable acquisition devices of claim 1, wherein the bridge chip supports hot plug detection and power management functions for automatically adjusting the operating state when an external device is connected or disconnected.
  6. 6. The data transmission interface structure for a portable acquisition device according to claim 1, further comprising a signal enhancement circuit disposed between the bridge chip and the Type C interface for optimizing transmission quality of USB4 high-speed signals.
  7. 7. The data transmission interface structure for portable acquisition equipment according to claim 1, wherein the FPGA is an FPGA chip integrating PCIe 3.0, the FPGA directly transmits data based on PCIe protocol through between the bridge chip and the computer, and the external equipment is a computer or a host with USB4 interface.
  8. 8. A portable acquisition device, characterized in that the device comprises a data transmission interface structure for a portable acquisition device according to any one of claims 1 to 7, and the device is connected with a computer through the Type C interface to realize high-speed data acquisition and transmission.

Description

Data transmission interface structure and equipment for portable acquisition equipment Technical Field The invention relates to the field of communication, in particular to the field of communication interfaces of an FPGA and a computer, and particularly relates to a data transmission interface structure and device for portable acquisition equipment. Background Currently, the main communication modes of the FPGA and the computer are UART, TCP/IP, PCIe, USB, 3.0 and other communication modes. The UART communication mode has low data transmission rate, the TCP/IP and USB3.0 communication modes belong to an external cable connection mode, are influenced by communication protocols and physical interfaces, have no PCIe transmission rate, have the maximum transmission bandwidth of 20Gbps according to the specification of a USB IF association, are only 2.5G Ethernet networks, have no PCIe transmission bandwidth, and are usually inserted into a main board PCIe slot in the form of a plug-in card to be used as a part of a host, so that the UART communication mode is unfavorable for carrying. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide the data transmission interface structure and the device for the portable acquisition device, which have the advantages of simple structure, high transmission rate and wider application range. In order to achieve the above object, the data transmission interface structure and device for a portable acquisition device of the present invention are as follows: The data transmission interface structure for the portable acquisition equipment is mainly characterized by comprising a bridge chip, wherein one side of the bridge chip is a PCIe interface, the other side of the bridge chip is a USB4 interface, the bridge chip is connected with an FPGA (field programmable gate array) through the PCIe interface and is connected with a Type C interface through the USB4 interface, the bridge chip converts the PCIe interface of the FPGA into the USB4 interface, and the bridge chip is connected with external equipment provided with the USB4 interface through the USB4 interface. Preferably, the bridge chip is connected with the FPGA through a PCB wire, and the bridge chip is connected with the USB4 interface through the PCB wire. Preferably, the bridge chip adopts an ASM2464PD chip, the PCIe interface is a PCIe 3.0x4 interface, and the bridge chip converts the PCIe 3.0x4 interface of the FPGA into a USB4 interface. Preferably, the structure is connected with the radio frequency acquisition equipment in a golden finger card inserting mode and is connected with the PC end through a Type C interface. Preferably, the bridge chip supports hot plug detection and power management functions, and is used for automatically adjusting the working state when external equipment is connected or disconnected. Preferably, the interface structure further includes a signal enhancing circuit, and the circuit is disposed between the bridge chip and the Type C interface, for optimizing transmission quality of the USB4 high-speed signal. Preferably, the FPGA is an FPGA chip integrated with PCIe 3.0, the FPGA directly transmits data based on PCIe protocol through between the bridge chip and the computer, and the external device is a computer or a host with USB4 interface. The portable acquisition equipment is mainly characterized by comprising the data transmission interface structure for the portable acquisition equipment, wherein the equipment is connected with a computer through the Type C interface to realize high-speed data acquisition and transmission. The data transmission interface structure and the device for the portable acquisition device have the advantages of high transmission bandwidth and portability. The USB4 IF provides that the maximum transmission bandwidth of the USB4 is 40Gbps, the computer communicates with the FPGA through a USB4 interface, the theoretical transmission rate is 3.9GB/S, the problems of cable, signal integrity and the like are solved, the actually measured transmission rate is 2.5GB/S, and the transmission bandwidth of 2.5GB/S can meet the transmission bandwidth of most portable acquisition equipment. Drawings Fig. 1 is a schematic view of the external connection of a portable acquisition device according to the present invention. Fig. 2 is a schematic diagram of an interface working principle of the data transmission interface structure for the portable acquisition device according to the present invention. Fig. 3 is a schematic block diagram of interface hardware of the data transmission interface structure for the portable acquisition device according to the present invention. Fig. 4 is a schematic diagram of the overall architecture of the data transmission interface structure for a portable acquisition device of the present invention when applied to a radio frequency acquisition device. Detailed Description In order to more clearly desc