Intel® Advanced Link Analyzer: User Guide

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ID 683448
Date 4/01/2024
Public
Document Table of Contents
Document Table of Contents x
1. Intel® Advanced Link Analyzer Overview 2. Functional Description 3. Tutorial: PCI Express* 8GT 4. Document Revision History for Intel® Advanced Link Analyzer User Guide
1. Intel® Advanced Link Analyzer Overview x
1.1. System Requirements 1.2. Installation 1.3. Program and File Types 1.4. Accessing the User Guide
2. Functional Description x
2.1. Intel® Advanced Link Analyzer Control Module 2.2. Intel® Advanced Link Analyzer Data Viewer Module 2.3. Intel® Advanced Link Analyzer Channel Viewer Module 2.4. Intel® Advanced Link Analyzer Batch Simulation Controller 2.5. Intel® Advanced Link Analyzer Channel Designer
2.1. Intel® Advanced Link Analyzer Control Module x
2.1.1. Constructing Communication Links in the Link Designer Module 2.1.2. Link and Simulation Setting 2.1.3. Transmitter Setting 2.1.4. Receiver Setting 2.1.5. IBIS-AMI Wrapper 2.1.6. Channel Setting 2.1.7. Batch Channel Simulation Configuration 2.1.8. Crosstalk Aggressor Transmitter Setting 2.1.9. Repeater and Retimer Configurations 2.1.10. Noise Source Link Component 2.1.11. System Options 2.1.12. Project Management Functions 2.1.13. Archiving and Unarchiving Projects 2.1.14. Device Model Importer 2.1.15. Analysis Functions and Pre-Simulation and Pre-Analysis Checklists 2.1.16. COM Analysis 2.1.17. Link Builder
2.1.3. Transmitter Setting x
2.1.3.1. Jitter/Noise Component 2.1.3.2. Transmitter Options 2.1.3.3. Characterization Data Access 2.1.3.4. IBIS-AMI Transmitter Configuration 2.1.3.5. Pulse Fitting Analysis 2.1.3.6. SNDR Analysis 2.1.3.7. Jnu/Jrms/EOJ Analysis 2.1.3.8. Clock Path Custom Transmitter
2.1.4. Receiver Setting x
2.1.4.1. Jitter/Noise Setting 2.1.4.2. Characterization Data Access 2.1.4.3. Receiver Options 2.1.4.4. IBIS-AMI Receiver Configuration 2.1.4.5. Custom Receiver With Input Clock
2.1.9. Repeater and Retimer Configurations x
2.1.9.1. Repeater/Retimer RX Configuration 2.1.9.2. Repeater/Retimer TX Configuration
2.3. Intel® Advanced Link Analyzer Channel Viewer Module x
2.3.1. Channel Plot Panel 2.3.2. Channel List Panel 2.3.3. Plot Option Panel
2.3.3. Plot Option Panel x
2.3.3.1. S-parameter Mode Panel 2.3.3.2. Plot Configuration Panel 2.3.3.3. Options
3. Tutorial: PCI Express* 8GT x
3.1. Methodology 3.2. Setup and Initialization 3.3. Analysis
3.2. Setup and Initialization x
3.2.1. Setting Up the Control Module 3.2.2. Constructing the Channel 3.2.3. Completing the System
1. Intel® Advanced Link Analyzer Overview
2. Functional Description
3. Tutorial: PCI Express* 8GT
4. Document Revision History for Intel® Advanced Link Analyzer User Guide

2.1.16. COM Analysis

Intel® Advanced Link Analyzer can perform Channel Operating Margin (COM) analysis on the link or channel currently configured in the Link Designer as described below.
Figure 107. COM Analysis User Interface
Figure 108. COM Analysis Result Example
  1. Set up or configure a link in the Link Designer.
  2. Click COM Configuration.
  3. Select your COM configuration from the COM Configuration menu.
  4. Click COM Analysis, or select Analysis > COM Analysis to perform a COM computation.

As COM is a standards driven analysis, the parameters are specified and fixed for each COM configuration. To perform a custom COM analysis, follow the process below.

Figure 109. Custom COM Analysis User Interface
  1. Set up or configure a link in the Link Designer.
  2. Click COM Configuration.
  3. Select COM Analysis from the COM Configuration menu.
  4. Select a COM configuration using the Analysis Template menu that is closest to the your target link configuration

    Example: If you want to compute COM for an OIF CEI 4.0 long reach link at 50 Gbps (PAM4), choose COM OIF-CEI-56G-LR, and then use it as a starting point for your customization.

  5. Edit COM parameters to suit your link configuration.

    Example: Click on the fb parameter, and enter 25 for 50 Gbps OIF-CEI 4.0 long reach COM analysis. Click on the CTLE_Auto_Scale parameter, and enter 1 for automatic CTLE model scaling.

  6. Click the COM Analysis or select COM Analysis in the Analysis menu to perform a COM computation.

Use Save or Save as to save your customized COM configuration for future use. To load a previously saved custom COM configuration, select COM Configuration > Load from file.

The COM Analysis function shares the same COM computation engine within the Intel® Advanced Link Analyzer’s Channel View (see Intel® Advanced Link Analyzer Channel Viewer Module). The main difference is that the COM Analysis function reads channel configurations from the Link Designer and then performs channel manipulations, for example, channel model generation and channel cascading, for the COM computation. In the Channel Viewer, you have to pre-process the channels before adding them to the Channel Viewer and computing the COM.

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