Time digital converter based on RPGA and its conversion method
A time-to-digital conversion and time-to-digital technology, which is applied in the direction of electrical unknown time interval measurement, devices and instruments for measuring time interval, etc., can solve the problems of inability to design and manufacture TDC chips to meet the needs, high cost, high cost performance, flexible interface, Flexible channel count effects
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[0031] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0032] like figure 1 As shown, the time-to-digital converter of the present invention includes a fine time measurement unit, a coding unit, a coarse time measurement unit and a data buffer unit, and the above units are all implemented in FPGA.
[0033] The fine time measurement unit uses multi-bit adders or addition and carry primitives to cascade the dedicated carry lines in the FPGA to form a time delay line. Here, it is necessary to set the corresponding compilation and synthesis options in the design software of the FPGA supplier, such as in Xilinx In the company's ISE integration software, set the Optimization Goal option under the Synthesize-XST attribute to Area, etc. Field programmable logic device FPGA is more and more widely used in modern electronic design, its performance is improving day by day, and its price is also gradually falling. It is widely used ...
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