| With the growing demands of data transmission bandwidth and rate in circuit and electronic systems, the high-speed serial interface technology become the mainstream of high-speed data transmission for its speed advantage. The lOGbit/s high-speed serial interface has been widely used in data communication, and the transmission performance of lOGbit/s high-speed serial channel has become an important factor which may degrade the system function. Because of such a high transmission rate, it will inevitably cause a series of Signal Integrity and Power Integrity problems. Therefore, it is necessary to simulate and analyze signal and power integrity of lOGbit/s high speed serial channel.In this paper, the Stratix V GX series development board has been regarded as research object, then the S parameters of the SFP+ differential transmission line has been extracted with Sigrity and ANSYS simulation tool. The simulation results have been compared with standard requirements to verify the feasibility of simulation. Comparing actual test waveform with simulation results, it proves that the results of simulation are consistent with the measurement results. It also provides reference for the simulation of serial channel. In this paper, compare is made about the accuracy、the time-consuming and operation difficulty degree of two kinds of software to provide some reference basis for the simulation analysis.In this paper, simulation is also made for power integrity of board power supply system of SFP+chip. By making simulation about the DC voltage Drop of power supply system, it is verified that the actual voltage drop meet the voltage threshold requirements. And the SSN (Simultaneous Switching Noise) simulation circuit has been created in Designer to analyze the power noise before and after optimization of impedance of the power supply. The results prove that the design of the board is reasonable. |
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