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Optional waveform generator based on PCI bus

A PCI bus and arbitrary waveform technology, applied in the field of arbitrary waveform generators, can solve the problems of not being able to generate fast, effective, continuous and easy-to-customize signal waveforms, and achieve the effects of superior programmable performance, reduced research accuracy, and high performance

Inactive Publication Date: 2009-05-06
成都飞机工业(集团)电子科技有限公司
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Problems solved by technology

However, the disadvantage of the above-mentioned prior art arbitrary waveform generator is that it cannot produce various high-quality, complex signal waveforms that are fast, effective, continuous and easy to customize.

Method used

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  • Optional waveform generator based on PCI bus
  • Optional waveform generator based on PCI bus
  • Optional waveform generator based on PCI bus

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Embodiment Construction

[0027] refer to figure 1 . Arbitrary waveform generator mainly includes, D / A conversion circuit, CPU chip, PCI bus, PCI controller, bridge circuit, programmable logic device CPLD, application layer buffer; Said D / A conversion circuit is used for digital signal and analog Signal conversion; the CPU chip contains application layer software and driver software for signal simulation, and puts the simulation data into the application layer buffer; the PCI bus is a primary bus inserted between the CPU and the original system bus , from a structural point of view, a bridge circuit is used to realize the management of this layer, which is used to realize the interface between the upper and lower to coordinate the transmission of data; the PCI controller has a multi-level buffer, which is used to manage the PCI slot, so The peripherals connected to the PCI slot can work in parallel with the CPU; the bridge circuit is used to convert between two different signal environments and provid...

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Abstract

The invention relates to an arbitrary waveform generator based on a PCI bus, which comprises the PCI bus being a local bus not attached to some a concrete processor. Structurally, the PCI is a primary bus which is inserted between a CPU and an original system bus, management on the layer is concretely realized by a bridge circuit, and an interface between top and bottom is realized to coordinate data transportation. An application layer buffer zone can continuously exchange data. The process of the data transportation is sponsored by an application layer program, but is executed by a chip PLX9054 of a PCI bridge interface, application layer software can carry out data generation and allocation in the process, and the whole transportation process is completed by direct memory access (DMA) and interruption. By utilizing the buffer zone to fast exchange the data, the arbitrary waveform generator can fast carry out data exchange, efficiently ensures the continuity of space signals and the fast switch of multiple signals, and has the advantages in multiple aspects such as flexibility, rapidness, changeability, controllability, high accuracy, and the like.

Description

technical field [0001] The invention relates to an arbitrary waveform generator, especially an arbitrary waveform generator based on PCI bus, which can meet various waveform signal applications in the fields of communication, video and television, telecommunication, radar, ultrasonic and aviation detection equipment. Background technique [0002] Arbitrary waveform generator is an indispensable instrument in the field of signal processing. Arbitrary waveform generators are widely used in communication systems, test systems, etc. Many arbitrary waveform generators in the prior art cannot generate fast, effective, continuous and easy-to-customize signal waveforms. The existing arbitrary waveform generators are mainly designed based on CPLD technology. The waveform is generated through the software setting of the host computer, and then the waveform data is downloaded to the AWG. Arbitrary Waveform Generator. The working process of the AWG arbitrary waveform generator is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 任晓飞
Owner 成都飞机工业(集团)电子科技有限公司
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