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Based on the simulation and design of high-speed PCB signal integrity analysis

Author: ZengAiFeng
Tutor: ChenDongYi
School: University of Electronic Science and Technology
Course: Pattern Recognition and Intelligent Systems
Keywords: Signal Integrity High-speed PCB Simulation DDR2 timing Power Integrity
CLC: TN41
Type: Master's thesis
Year: 2011
Downloads: 214
Quote: 0
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Abstract


With the increasing frequency signal edge rates and system PCB traces and laminated characteristics of the electrical properties of the system more and more significant. Therefore, to the high-speed PCB design brings new challenges - signal integrity problems, mainly including reflection and crosstalk, signal-to-noise problem, the bus timing problems and power distribution systems, noise problems, these problems are likely to cause unstable electronic systems can not even work properly. In this paper, the above problem on the motherboard PCB I designed the high-speed signal noise, the noise of the high-speed memory timing and power distribution systems analysis and design; software simulation method to analyze the problem, draw a design solution, and the simulation results into PCB layout design constraint rules to guide design, final design through physical testing. The paper mainly work are summarized below: (1) the basic noise of the high-speed signal for simulation and PCB noise suppression wiring design. Motherboard's high-speed signal of MENLOW reflection reflection problem, simulation analysis, derived signal line impedance matching strategy; crosstalk problems through software simulation method to analyze the impact of various factors on the crosstalk; final MENLOW PCB the suppression of reflection and crosstalk noise wiring design. (2) on the the S5PC100 motherboard memory modules (DDR2 onboard chip form) and MENLOW motherboard memory modules (DDR2 SODIMM connector form) timing simulation and calculated the complete assurance timing constraint relationships defined constraint rules to guide the PCB memory traces bus wiring design, timing simulation and wiring. (3) analysis of the power distribution system design goals of its design, detailed design, and then on the power distribution system of the the S5PC100 motherboard PCB Power Integrity software simulation. (4) VX800 motherboard PCB design, for example, to discuss a complete high-speed PCB board-level simulation and design implementation process, including laminated design and impedance calculation, the device pre-layout simulation analysis and constraint rules defined, specific layout design and wiring and simulation; the last motherboard physical tests to verify the feasibility of the simulation method. This article is from the theoretical analysis, using hierarchical simulation analysis method, the theory is applied to engineering design. Signal integrity throughout the entire PCB design process design thinking, the successful completion of a variety of high-speed micro motherboard PCB design.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Microelectronics, integrated circuit (IC) > Printed circuit
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