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Processor internal and external data exchange system of embedded signal processing platform

A signal processing and data exchange technology, applied in the direction of electrical digital data processing, instruments, etc., can solve problems such as data exchange, and achieve the effect of simple data flow, flexibility, and reduction of timing overhead.

Inactive Publication Date: 2011-01-05
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to develop a fast data sending and receiving system for the embedded processor of the embedded signal processing platform, which solves the problem of internal and external data exchange of the embedded signal processing platform processor

Method used

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  • Processor internal and external data exchange system of embedded signal processing platform
  • Processor internal and external data exchange system of embedded signal processing platform
  • Processor internal and external data exchange system of embedded signal processing platform

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Embodiment Construction

[0022] An example of the present invention is as follows:

[0023] It is implemented on an embedded infrared signal processing platform. The main hardware environment is: FPGA device adopts XC5VFX70T-FF1136-1 programmable logic device of XILINX Company, and embedded processor adopts hard core PowerPC440 processor inside the device. The system reference clock is 100MHZ, the processor clock is 300MHZ (up to 400MHZ), and the bus clock is 125MHZ. On-chip Memory64KB, system memory DDR2_SDRAM256MB. System bus PLB_v4.6 version. The external data source adopts infrared large area array digital simulation video stream, its format is area array 512×512, and the frame frequency can be customized. The test results show that when the DMA transfer is enabled, the first bus cycle is overhead by the system, and then one data operation can be completed in each bus cycle. In the experiment, the line width of the bus is 32 bits, and the maximum on-chip rate of data transmitted by the bus with ...

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Abstract

The invention discloses a processor internal and external data exchange system of an embedded signal processing platform, which is mainly applied to the internal and external data exchange of the embedded signal processing platform based on programmable logic. The technical scheme adopted by the invention comprises a hardware part and a software part. The hardware part mainly comprises a data receiving and transmitting module which is self-developed according to an external data format, and the hardware part is hung on a bus to be used as one of peripheral equipment. The software part mainly comprises interrupt processing and DMA (Direct Memory Access) transmission. The invention has the advantages that the exchange of processor memory and external data is realized by utilizing the data receiving and transmitting module self-developed in an FPGA (Field Programmable Logic Array) and through the interconnection with an embedded system bus, thereby effectively simplifying the steps of inputting and outputting the external data to the memory, saving resources, markedly improving the data exchange rate and satisfying the requirements of large high-frame-frequency and multiband infrared image data quantity.

Description

technical field [0001] The present invention relates to a processor internal and external data exchange system, specifically a processor internal and external data exchange system of an embedded signal processing platform, which is mainly used for the internal and external data exchange of directly interconnected processors in the embedded infrared signal processing platform . Background technique [0002] Along with the trend of miniaturization and low power consumption in design, more and more people hope to realize as many functions as possible on a single chip. As a special embedded processor system, SOPC (System on Programmable Chip) combines the advantages of embedded systems and FPGA (Programmable Logic Gate Array), has a more flexible design method, and has software and hardware in-system programmable Ability. Moreover, the rapid development of semiconductor technology has made the frame rate of infrared detectors faster and faster, the area arrays are larger and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 赵佳张涌汤心溢李丹孔军
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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