Posted on January 4th, 2011 by Lu�s Cruz
Posted on Jun 21st, 2011 by Lu�s Cruz
- Thesis writing Done
- Web Page Updated to include Thesis Report
Posted on Jun 21st, 2011 by Lu�s Cruz
- Thesis writing ongoing
- Simulations performed to extract waveforms for thesis document
Posted on Jun 5nd, 2011 by Lu�s Cruz
- Software obtained results were cross-checked with lab ones
- Software support diagrams were created
- Thesis document creation is now the priority
- On going
Posted on May 22nd, 2011 by Lu�s Cruz
- Signal analysis classes created
- Eye diagram generation class created
- Analog parameters extraction class created
- Channel/Equalizer frequency response class created
- Added Signal analysis report creation inside signal analysis classes
- Added Data generation with possibility to add jitter
- Added support for data generation with pre-emphasis
- Created top level script to generate reports from raw data stored on .csv files
- The intent is to characterize interfaces where clock and data are transmitted from
TX macro to RX macro
- The frequency relation between data clock and line clock is equal to 10
- Created class to perform the convolution between analog signals and frequency responses
- Created top level script for channel characterization
- Clock Recovery Unit
- Cable Modeling
- Equalizer Modeling
- Jitter Modeling
- Data Pattern Generation
- Jitter Analysis
- Eye diagram creation
- Analog parameters extraction
- Added support statistical eye diagram generation
Posted on May 1st, 2011 by Lu�s Cruz
- Python Classes creation to analyze analog signals (crossing point and period extraction)
- Python Class creation to over sample analog signals
- Python Class creation to under sample analog signals
- Python Class creation to perform Clock Recovery from analog signals
- Included jitter addition tasks on analog signals processing Python Classes
- Python Class to perform cable equalization
- On going
- Python Class creation to perform the convolution between analog
signal and reference equalizer
- Python Class creation to perform Eye diagram measurements
- Necessary to improve the algorithm responsible for the frequency extrapolation
Posted on April 19th, 2011 by Lu�s Cruz
- Python Class creation to include the frequency to time domain functions
- Impulse Response generation from band limited S-parameters
- Impulse Response generation from a defined H(jw) function
- Spice cable simulation to extract S-parameters
- Spice impulse response generation for pre-defined LOW-PASS circuits
Posted on April 5th, 2011 by Lu�s Cruz
- Fourier Transform study
- FFT and iFFT python tutorial study
- Frequency domain signals study
- Difficulties
- Frequency domain to impulse response conversion.
- Causality Enforcement on frequency domain signals
Posted on March 20th, 2011 by Lu�s Cruz
- Jitter software Documentation draft creation ends
- Updated jitter software tool to ensure coherence with documentation
- Difficulties
- It's being difficult to conciliate job and family time with thesis time
- PC issues (solved)
Posted on March 8th, 2011 by Lu�s Cruz
- Jitter software Documentation creation started
- Documentation figures creation
Posted on March 8th, 2011 by Lu�s Cruz
- Jitter software decomposition tool uploaded to
Resources page
- The jitter tool was developed using python
- Multi-thread was added to the tool, decreasing the overall processing time (on multi core CPUs)
- Difficulties
- The conversion from python to an executable windows file
(special python commands were needed to ensure correct support of multi-thread)
- The jitter histograms acquire on lab have a big time step resulting on a less accurate
jitter decomposition values
Posted on March 8th, 2011 by Lu�s Cruz
- Lab Reports analysis
- Silicon raw data was acquired to be used on the development process
- Jitter histograms were stored on .csv files
- One of the difficulties of using post processed data is
the lack of information about the signal behavior
- Jitter histograms have a bigger time step
Posted on February 20th, 2011 by Lu�s Cruz
- Meeting with the advisor
- MIPI, HDMI and USB standards study
- Specification of the principal measures done by the software tool
- Eye diagram generation
- Jitter decomposition
- Intra-Pair skew measurement
- Inter-Pair skew measurement
- Rise and Fall times measurement
- Minimum and Maximum values of the analog signal for each digital representation
- Draft specification of the software engine
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