Teledyne Lecroy PCI Express Gen 4x8 OCuLink User Manual

PCI Express® Gen4 x8 OCuLink Interposer
User Manual and Quick Start Guide

Before Starting

Use this document for quick installation and setup. If you experience problems or
need more information, see the product manuals available at the Teledyne LeCroy
web site or in the Documents folder in the PCIe Protocol Suite installation DVD.

1

Introduction

Teledyne LeCroy's PCI Express Gen4 x8 OCuLink Cable Interposer for the Summit™ PCI Express Protocol Analyzer product line provides
individual dedicated probes, making it easy to capture and analyze data traffic between a host and device that are connected using a
PCIe® OCuLink type cable based on the PCI Express OCuLink Cable specification. The PCI Express Gen4 x8 OCuLink Interposer taps
into the OCuLink point to point connection to allow an analyzer to capture and decode data traffic between two systems. It supports data
rates of 2.5 GT/s, 5.0 GT/s, 8.0 GT/s and 16.0 GT/s. The interposer assures reliable data transmission while providing 100% capture of
all data traffic flowing through the PCIe interface. Connecting the interposer to a Teledyne LeCroy analyzer allows analyzer to decode and
display data in both directions and across all lanes.

One PCIe OCuLink Cable can support PCIe link widths from x1 to x4. Larger links can be achieved by adding additional cables, e.g. a x8
link uses two PCIe OCuLink cables. The PCI Express OCuLink Specification allows in addition to in-band PCIe signaling the passage of
sideband signals such as PERST#, WAKE#, CLKREQ# and SMBus by passing them electrically through the link. The sideband signaling
(PERST#, WAKE#, CLKREQ#, SMBus and other functionality) can be monitored by the protocol analyzer through the interposer, where
protocol issues and performance metrics can be analyzed and debugged. RefClk signals external to the cable are also available on the
PCIe OCuLink Cable Interposer for use with the protocol analyzer.

The PCI Express Gen3 x8 OCuLink Interposer works with the PCIe OCuLink cable (or set of cables) up to 0.6 meter in length as defined
in the PCI Express OCuLink Cable specification.

PCI Express Gen4 x8 OCuLink Interposer

2

Components

The interposer package includes the following components:

• PCI Express Gen4 x8 OCulink Interposer

• PCIe OCuLink Internal Cables (Two PE017UCA-X cables 60cm each)

• DC Power Adapter (12 volts @ 5A)

• User Manual and Quick Start Guide (this document)
Inspect the received shipping container for any damage. Unpack the container and account for each of the system components listed on
the accompanying packing list. Visually inspect each component for absence of damage.

In the event of damage, notify the shipper and Teledyne LeCroy. Retain all shipping materials for shipper’s inspection.

3

PCI Express Gen4 x8 OCuLink Interposer Interconnection Overview

12V DC from

adapter
supplied

Summit PCIe Gen 4

capable Analyzer

Switches Settings

for Clock inputs

(see Table 1 on

page iii below)

AB

OCuLink Device side

(use internal or external cables)

OCuLink Root side

(use internal cables)

+5V to
Device

(End-Point)

(see Ta bl e 3

on page iii)

Active

Width

Selection

Switch

(see

Table 2 on

page iii)

iPass Cable: Interposer to Analyzer

T416: PE016UCA-X

J11: Sideband
Signals Test Points
(see Table 4 on

page iv and Ta bl e 5
on page iv)

Upstream

Downstream

Calibration

connector

Connections

Perform to the following steps to connect the Interposer (see the image below):

1. Connect the supplied Teledyne LeCroy PCIe OCuLink Internal cable (PE017UCA-X) between the CH[0:3] port on the Root side of the interposer and
Port-0 of the OCuLink root. If x8 configuration is required, connect both Teledyne LeCroy PCIe OCuLink internal cables between the Root side ports
of the interposer and Port-0 and Port-1 of the OCuLink root.

2. If working in x4 configuration with an internal device, connect the second Teledyne LeCroy PCIe OCuLink Internal cable (PE017UCA-X) between the
CH[0:3] port on the Device side of the interposer and Port-0 of the OCuLink device. If x8 configuration is required use two off-the-shelf cables to con­nect the End Point side ports from the interposer to Port-0 and Port-1 of the OCuLink device. If working with external devices you will need an off the
shelf 0.6m external cable.

3. Connect the Summit PCIe Gen 4 capable analyzer to the interposer as indicated in the diagram below.

4. Install the PCIe Protocol Analysis Software on the host machine. This application is needed to control the protocol analyzer.

5. Connect the analyzer to a host machine (where the PCIe Protocol Analysis Software application will be running) using the USB or Ethernet port on
the back panel of the Summit analyzer (or other compatible Teledyne LeCroy analyzer.

6. Connect 12V DC using the AC adapter supplied with the interposer. Make sure that the AC adapter is turned on.

7. Power on the analyzer.

8. Power on the host/root complex system.

9. Use the Teledyne LeCroy software application to monitor, record and view PCI Express traffic in the PCIe expansion card DUT system. Use Internal
Clock in the recording options tab of the application. In order to improve lock time for analyzer provide reference clocks for upstream and down­stream and use External Clock option.

Note: Steps 6, 7, and 8 are needed in this order for power on traces.