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University of Connecticut

University of Connecticut. Virtual Lab Carl DiFederico , Shane Tobey, Kasim Ward Graduate Student Advisor: Qihang Shi Senior Faculty Advisor: Mohammed Tehranipoor Electrical & Computer Engineering. Hardware Design Moving Forward.

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University of Connecticut

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  1. University of Connecticut Virtual Lab Carl DiFederico, Shane Tobey, Kasim Ward Graduate Student Advisor: Qihang Shi Senior Faculty Advisor: Mohammed Tehranipoor Electrical & Computer Engineering

  2. Hardware Design Moving Forward • This coming week we wish to begin ordering parts for benchmarking • We wish to burn-age an acceptable percentage of chips • We must decide on the temperature we wish to run • Can we obtain more chips of the same lot #? • Moving forward with the relay hub model • A quick comparison has been provided

  3. Scan-Chain Option • Problem • Leakage and transient current are analog signals, and will damp over long distance, causing DUT farther away to be damped more than DUT closer to probe in a daisy-chain connection • One set of instruments for each DUT infeasible

  4. Tree Signal Path • Tree-like connection for analog signal path, and signal amplification on each board for incoming signal • Each layer of boards is exposed to more noise

  5. Analog Signal Path • Use an extra board (Hub) as an expandable control interface from FPGA and Oscilloscope to DUT boards • This equalizes noise, removes the need for amplification and removes the need to relay the probe • Allows for expandibility

  6. Moving Forward • We must research the running speed and noise in relays, however the concept is sound • We are finding there are occasionally communication issues with the COM ports and the hardware, these should be handled if not resolved • In addition, the programmer board was not functioning properly although this may also be a COM port issue

  7. Upcoming Deadlines and Goals • Oct. 7thOral Proposal Presentation • Ordering of parts for test this week • Finding 8051s of matching lot #

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