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Hi-Speed ??USB BER testing and research

Author: ChenZhiYuan
Tutor: LaiJinMei；YangXuHua
School: Fudan University
Course: IC Engineering
Keywords: USB FPGA Shake Bit Error Rate Tester
CLC: TP334.7
Type: Master's thesis
Year: 2009
Downloads: 64
Quote: 1
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Abstract


USB has become the standard in the PC expansion interface, and are widely used in the computer with an external device connection and communication . USB2.0 can support a maximum data transfer rate of 480Mbps . This paper mainly discusses the high-speed USB bit error rate (BER) testing . This paper first studied the work of the Hi-Speed ??USB topology and structure of the transceiver , and high-speed USB is used to reduce the bit error NRZI with bit stuffing combination of encoding , elastic buffers are designed to achieve , at the same time , Hi-Speed ??USB signal quality tests are also analyzed . The jitter on the time and the amplitude of the noise is mainly due to errors in the communication system . In this paper, first proposed the prediction error rate jitter test methods . The main the oscilloscope test signal eye diagram , jitter and eye diagram analysis , separated by the method of probability statistics deterministic jitter , random jitter , inter-symbol interference and duty cycle distortion and periodic jitter . The application probability distribution function (PDF) the cumulative distribution function ( CDF ) curve, the prediction error rate of the communication system and analyze the impact of various noise BER error rate . In order to verify the correctness of the bit error rate prediction , designed a special USB bit error rate tester to the actual test error rate . The tester uses a combination of architecture of PC control with FPGA test . In this system , FPGA will be simultaneously connected to the data transmitting end and the receiving end of data , to form a loop . Than the statistical error rate of data sent and received data . The test results showed that both results are very consistent .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > External device > Interface devices,plug-in
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