Dissertation
Gasping for harmony: communication between arbitrary clock domains with multiple voltage domains using a locally-clocked, linear dual-clock FIFO scheme
Washington State University
Doctor of Philosophy (PhD), Washington State University
05/2009
DOI:
https://doi.org/10.7273/000005580
Abstract
CMOS scaling has resulted in miniaturized high speed and high density system on a chip (SoC) designs. The desired high performance systems introduce a number of design challenges including increasing power dissipation, longer delays in transmitting signals between communicating Intellectual Property (IP) blocks and difficulties in synchronizing the IPs block with a single clock source. Consequently, these IP blocks may operate from independent clocks, creating multiple clock domains in a SoC, further complicating synchronization. Advanced power management systems dynamically change the supply voltages for these SoCs to reduce power consumption, changing device characteristics and further exacerbating communication challenges. In this dissertation, a communication scheme is presented that addresses some of these challenges and is compared to an existing scheme. The proposed FIFO scheme uses locally-generated clock signals to control data propagation along a communication channel, providing independence from a global clock while significantly improving throughput. The control logic enables the proposed scheme to perform synchronization between two arbitrary clocks using one or more stages. The proposed scheme operates up to 9.5 giga-samples per second per channel, synchronizes at sub-threshold levels, and when compared to a reference scheme dissipates 82% less power and has a speed-up of 58%.
Metrics
3 File views/ downloads
11 Record Views
Details
- Title
- Gasping for harmony
- Creators
- Ray Robert Rydberg
- Contributors
- Jabulani Nyathi (Chair)Jose G Delgado-Frias (Committee Member) - Washington State University, School of Electrical Engineering and Computer SciencePartha Pratim Pande (Committee Member) - Washington State University, School of Electrical Engineering and Computer ScienceJudith McDonald (Committee Member) - Washington State University, Graduate School
- Awarding Institution
- Washington State University
- Academic Unit
- School of Electrical Engineering and Computer Science
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 140
- Identifiers
- 99901054533901842
- Language
- English
- Resource Type
- Dissertation