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Two-channel DSPEED-DAC_D1G board

A dual-channel, board-card technology, used in instruments, electrical and digital data processing, etc., can solve problems such as limited transmission capacity and data processing capacity, achieve powerful digital signal processing capacity and storage capacity, strong scalability, analog signal high bandwidth effect

Inactive Publication Date: 2010-06-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for most DAC chips, the conversion rate of 1GHz is rarely achieved; at the same time, most DAC chips are controlled by DSP and perform data preprocessing, and the transmission and data processing capabilities are limited.

Method used

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  • Two-channel DSPEED-DAC_D1G board
  • Two-channel DSPEED-DAC_D1G board
  • Two-channel DSPEED-DAC_D1G board

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0015] as attached figure 1 , attached figure 2 As shown, the dual-channel DSPEED-DAC_D1G board includes two DAC chips (TS86101G2B), sharing a 1GHz input clock. The DAC chip has a MUX (4:1) function, so it can convert four low-speed data signals input at the same time in a certain order. Therefore, the rate of the input data signal can be reduced to a quarter of the slew rate. The DAC chip simultaneously outputs a pair of LVDS differential clocks DSP_CK_T / P, which are divided by 4 of the input clock and maintain a fixed phase relationship with the conversion clock. After they are driven by the clock driver chip, they will be used as the clock of FPGA to ensure the correct timing.

[0016] The DAC chip also has a latch clock interface D_CK_T / P for input data, which comes from the clock of the FPGA and undergoes the same drive and delay as th...

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Abstract

The present invention provides a twin channel DSPEED-DAC_D1G board card, which consists of two DAC chips, one DSP chip, two FPGA, four FIFO chips, and one joint interconnection processing chip set. The communication protocol mainly comprises a PCI and StarFabric; the board model is the CPCI 6U standard board model, the work platform is industrial computer platform. The DAC of the present inventionhas a data transformation rate which can reach 1.2 GHz, the analog signals bandwidth is high, the digital signals processing capability and storing capability are strong; the present invention has amultiple external data interface, and the expansibility is strong. The present invention is mainly applied to the occasions which need a high data transformation rate and a high requirement of the analog signals bandwidth, for example, the radar signals simulating, electron disturb, etc.

Description

technical field [0001] The invention relates to a dual-channel synchronous DAC board and its hardware structure for high-speed real-time signal processing. Used in deceptive radar jamming systems and broadband signal simulators. Background technique [0002] The dual-channel DSPEED-DAC_D1G board is mainly used in occasions with high data conversion rate and high analog signal bandwidth requirements, such as radar signal simulation, electronic interference and so on. In these applications, it is required that the DAC has a higher conversion rate, and the data processing capability before the DAC also has a higher requirement. However, for most DAC chips, the conversion rate of 1GHz is rarely achieved; at the same time, most DAC chips are controlled by DSP and perform data preprocessing, and the transmission and data processing capabilities are limited. Contents of the invention [0003] The invention provides a dual-channel DSPEED-DAC_D1G board. In the present invention,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38G06F13/40
Inventor 刘国满李云杰娄样高梅国傅雄军刘畅
Owner BEIJING INSTITUTE OF TECHNOLOGYGY