Advanced Link Analyzer: User Guide

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ID 683448
Date 4/27/2022
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Document Table of Contents
Document Table of Contents x
1. System Requirements and Installation Guide 2. Functional Description 3. Tutorial: PCI Express* 8GT 4. Document Revision History for Advanced Link Analyzer User Guide
1. System Requirements and Installation Guide 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. Advanced Link Analyzer Control Module 2.2. Advanced Link Analyzer Data Viewer Module 2.3. Advanced Link Analyzer Channel Viewer Module 2.4. Advanced Link Analyzer Batch Simulation Controller 2.5. Advanced Link Analyzer Channel Designer
2.1. 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
2.1.3. 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
2.1.4. 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
2.1.9. Repeater and Retimer Configurations x
2.1.9.1. Repeater/Retimer RX Configuration 2.1.9.2. Repeater/Retimer TX Configuration
2.3. 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. System Requirements and Installation Guide
2. Functional Description
3. Tutorial: PCI Express* 8GT
4. Document Revision History for Advanced Link Analyzer User Guide

2.1.8. Crosstalk Aggressor Transmitter Setting

Aggressor transmitter configurations allow you to configure crosstalk aggressors individually with different transmitter types, pre-emphasis settings, amplitudes, data rates, and so forth. The following figure shows a 2-aggressor link with three different aggressor transmitters.

Figure 75. Aggressor Transmitter with Two Individual Aggressor Transmitters

Follow the steps described in the previous section to set up a link with crosstalk channels. In the Channel Wizard window, in the Signal Source menu of the Crosstalk Aggressor panel, select the Inline, Transmitter, or one of the eight available Aggressor types.

Figure 76. Setting Up the Crosstalk Aggressor for a Crosstalk Channel

Advanced Link Analyzer supports up to eight individual crosstalk aggressor transmitters. However, a crosstalk aggressor transmitter can be shared among crosstalk channels. By combining the aggressor relative amplitude, frequency offset, and delay setting, Advanced Link Analyzer can generate a variety of crosstalk aggressor signal sources.

After completing the configuration in the Channel Wizard, go to the Advanced Link Analyzer GUI and select the Aggressor Transmitter tab.

Figure 77. Aggressor Transmitter Tab

Within the Aggressor Transmitter tab, there are eight aggressor types associated with the aggressor types in the Channel Wizard’s Signal Source menu. Each aggressor can be configured as follows:

  • Data Rate—Data rate of the selected aggressor transmitter in Gbps.
  • Test Pattern—Aggressor transmitter’s test pattern. Advanced Link Analyzer supports the following test patterns:
    • Same as victim TX
    • PRBS-7, PRBS-9, PRBS-11, PRBS-15, PRBS-23, PRBS-31
  • VOD—Differential output voltage of the aggressor transmitter in volts.
  • Transmitter Type—Aggressor transmitter can be one of the following transmitter types:
    • Same as victim TX
    • Stratix® V GX
    • Arria® V GZ
    • Stratix® V GT
    • Custom
  • Pre-emphasis / FIR—Pre-emphasis or FIR setting of the aggressor transmitter. You can set it to be the same as the victim TX or you can type in the setting.
    Note:
    • In manual pre-emphasis/FIR input mode, the pre-emphasis/FIR setting must be in the same format as used in the Transmitter tab. This does not mean that the aggressor transmitter must be the same type as the victim transmitter, but that the pre-emphasis setting format must be in the format as if it is a victim transmitter. For example, if the aggressor transmitter type is Intel Stratix® V GX, the pre-emphasis/FIR setting is in a list of TX-FIR levels such as -1, 0, 20, 3, where -1 is the pre-tap 1 value, 20 is the post-tap 1 value, and 3 is the post-tap 2 value. The main tap can be any value, because Advanced Link Analyzer determines the main tap's value based on the values of other FIR taps.
    • If you input TX pre-emphasis /FIR, which is invalid for the selected transmitter type, then pre-emphasis/FIR is disabled.

If the transmitter type is Custom, the following parameters are also used:

  • Edge Rate—Advanced Link Analyzer generates a transmitter output waveform with the specified edge rate. Edge rate is in the format of ps/Volt.
  • TX-FIR Length—Length of TX-FIR for custom aggressor transmitter.
  • Main-Tap Location—Location of main tap of aggressor transmitter.

The example shown in Aggressor Transmitter Tab indicates an aggressor transmitter, which is a custom transmitter type, running at 6.5 Gbps with the PRBS-23 test pattern and a VOD of 1.2 V. The TX FIR coefficients are [-0.1, 0.8, -0.1] with a TX-FIR length of 3 and the main tap is at 2nd tap. According to the link configuration shown in Aggressor Transmitter with Two Individual Aggressor Transmitters, this aggressor transmitter is associated with Crosstalk (FEXT) channel ID = 2.

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