SIWAVE教学5

piaozi2008

Quick-Eye Analysis for Differential Pair

Design flow如下：(以一个由Mentor Graphics PADS2005 Layout的四层板为例)
1.
PCB预处理：Layout检查、层面清理
2.
PCB Export：转图设定以及Export data (.asc file)
3.
SIwave Import .asc and save as .anf
4.
Validation check and clear error messages
5.
Set layout Stack and layer materials
6.
Clip the area where the differential pairs trace on
7.
Place "Port" for simulation
8.
Set global settings and simulate
9.
Export the simulation result as touchstone file (S-parameter)
10.
Using Designer/Nexxim to plot eye diagram
-- Add Nport Model
-- Add Differential Eye Source and Probe
-- Set QuickEyeAnalysis
-- Run Simulation
-- Plot Eye Report
11.
眼图分析讨论
-- 电压源与电流源的差异
-- 模拟IC的driving不同的影响
-- 仿真系统Jitter noise的影响
-- 模拟PCB layout的影响--时域
-- 模拟PCB layout的影响--频域

piaozi2008

PCB预处理：Layout检查、层面清理 Disable没有用的层面：Setup \ Layer Definition

piaozi2008

未完待续~~~~~~~~

lb22233

学习中，

yhzyhz

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