[Anritsu Showcase 2022] PCIe 5.0/6.0 Electrical TRx Test Solution

Tektronix


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[Anritsu Showcase 20220920]Tektronix PCIe 5.0 6.0 Electrical TRx Test Solution
PCIe 5.0/6.0 TRX Test Solution
Anritsu VIP Showcase Tektronix Session-AE/Jacky Huang

PCI Express 5.0 Specification Status
2

Technology brief
· The Design & Compliance problem
 Physical size of SoCs remain approximately constant, bandwidth increases are primarily achieved by increasing the speed (data rate) of data per pin. Issues related to higher speeds ­ such as loss, cross talk and reflections ­ all become more pronounced as data rates increase
 For system designers, significant signal integrity experience is required to support the latest networking protocols like 400GbE.
21 SEPTEMBER 2022 3

PCIe 4.0 to 6.0 Base Specification Updates

Parameters
Data Rate Add-in Card Loss Rx Test (Channel Loss)

PCIe 4.0
16 GT/s 8dB @ 8Ghz - (27 to 30) dB @ 8GHz

PCIe 5.0
32 GT/s 9.5dB @ 16GHz - (34 to 37) dB @ 16GHz

PCIe 6.0
64 GT/s (PAM4) ~ 8.5dB @ 16GHz - (30 to 33) dB @ 16GHz

Reference CTLE
Reference DFE Eye Width (Rx Test) Eye Height (Rx Test)
Lane Margining Refclk Jitter Limits

2 Poles; 1 Zero; DC Gain Range (-6 to -12) dB

4 Poles; 2 Zero; DC Gain Range (-5 to -15) dB

2-Taps

3-Taps

18.75 ps

9.375 ps

15 mV

15 mV

Required timing only

Required timing/voltage

<= 500 fs

<= 150 fs

Increase in complexity of PCIe specifications

6 Poles; 3 Zero; DC Gain Range (-5 to -15) dB
16-Taps 3.125 ps (top eye)
6 mV (top eye) Required timing/voltage
<=100 fs

21 SEPTEMBER 2022

4

PCIe 5.0 Channel Solution Space
5

PCIe 5.0 Specification Snapshot
· PCIe 5.0 Base Specification ­ Rev 1.0 Released (Q2 2019)
· Describes chip-level behavior on all levels of the stack
· PCIe 5.0 CEM Specification ­ Rev 1.0 Released (Q2 2021)
· Card electro-mechanical (CEM) defines system and Add-in Card level
· PCIe 5.0 PHY Test Specification ­ Rev 1.0 Released (Q1 2022)
· Describes electrical compliance tests for Tx, Rx LEQ, Refclk & PLL Bandwidth
· PCIe 4.0 ­ All Specifications at Rev 1.0
· Integrators List testing began August 2019
6

PCI Express 5.0 CEM Tx
7

PCIe Gen 5 TX CEM
DUAL PORT TESTING REMOVAL

CEM workgroup voted in March 2020 to remove the Dual Port Requirement for 5.0 System Tx requirement
Workgroup exploring a new 5.0 System refclk jitter compliance test
Systems at 32 GT/s will be tested with the same CDR & reference Rx EQ algorithms as 32 GT/s Add-in Cards
Only 2 scope channels needed!

21 SEPTEMBER 2022

8

PCI Express CEM Tx Eye Mask

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9

Tektronix Gen5 Tx Solution Status
· PCI Express 5.0 Base Tx ­ Released Q1 2020 · PCI Express 5.0 CEM Tx ­ Released Q1 2021
· Currently Gen5 CEM compliance fixtures available from PCI-SIG
10

PCIe Gen5 Solution Landscape
Transmitter

Debug
DPOJET Plugin for Debug

Base

CEM

Ref CLK

SigTest Phoenix
TekExpress PCE5

Receiver

BASE

CEM

TP3-TP2

TP3-TP2

JTOL

JTOL

Rx/Tx LEQ

Seasim & SigTest Phoenix
Tektronix Rx automation

SDLA
Complete PCIe Gen5
Portfolio offering Tx +
Rx 21 SEPTEMBER 2022
11

Tektronix PCIe Gen5 Solution Offering

SUMMARY

Transmitter

Item

BW 33GHz DX/SX Scope

HW Arbitrary Function Generator1

Gen5 CEM Test Fixtures 2

TekExpress Gen5 Tx

TekExpress Gen4 Tx

SW TekExpress Gen1/2/3 Tx

DPOJET

SDLA

Status
Available Available Available Available Available Available Available Available

Receiver
Item
20Gbps BERT3
HW Dual Stack 50GHz Sx Scope Gen5 CEM Test Fixtures 2
Tektronix PCI Express Receiver Test Suite SW DPOJET
SDLA

1Optional automated DUT Tx pattern toggling. 2 PCI-SIG Fixture - Available from PCI-SIG 3BERT from Anritsu, link: https://www.anritsu.com/en-US/test-measurement/products/mp1900a 3Error Detector and Clock Recovery requires for the USB3.2 Receiver testing

Status
Available Available Available Available
Available Available

12

Gen 5 Test Fixtures

· Official Gen5 CEM Compliance Fixtures
· Built by Intel & sold through PCI-SIG · Available to SEG members June 2021 and
available to full PCI-SIG members now · RF Connectors ­ MMPX (Huber Suhner) · PCB ­ Meg6

· Tektronix Fixtures
· Gen5 CEM NON-OFFICIAL Fixture available for purchase December 2020 · Insertion Loss Spec & Return Loss Mask met · Successfully closed Gen5 CEM Rx Calibration & tested with Gen5 System & AIC · Variable ISI Board
· Step sizes of 0.5dB & 16GHz · Rx Calibration ­ Used to dial in 34dB to 37dB channel · Tx Signal Quality ­ Used to dial in loss of link partner (9.5dB AIC or 26.5dB
System) · PCI-SIG may decide to use embedding instead of physical ISI

21 SEPTEMBER 2022

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Transmitter Test Software
TEKEXPRESS
· Compliance of PCIe Gen1/2/3/4/5 based on PCIe Base and CEM specs
· Automated acquisition & waveform management
· Automated DUT control · De-embed channel, test fixtures, and
cables · User-selectable test selection. · Integrated waveform validation & SigTest
(Phoenix) analysis · Comprehensive test reporting
14

Transmitter Software Features
· Compliance and advanced analysis modes
· User-selectable SigTest version for each PCIe data rate
· Reduced & full swing voltage tests · Jitter, voltage, preset, and eye diagram
tests via SigTest (Phoenix) · Analysis and debug tools if failures
encountered · Comprehensive programmatic
interface for automation of tests
15

PCI Express 5.0 32GT/s Rx PG Calibration & Test
16

32GT/s Rx Calibration

PCI-SIG Developers Conference 2019

15mV / 0.3UI @ E-12 BER

Copyright © 2019 PCI-SIG® - All Rights Reserved

17

Rx Calibration Evolution

8GT/s Rx Calibration
· Fixed Channel Loss (package embedded with SigTest) · Knobs ­ Rj/DMI (often results in unrealistic Rj values ­ no bounds) · Only CEM fixtures for sale through PCI-SIG · Seasim (Base) & SigTest (CEM)

16GT/s Rx Calibration

· Variable ISI (27 to 30dB) ­ improved test equipment correlation · Knobs ­ Amplitude/Sj/DMI (with allowable ranges defined) · Limit BASE fixtures for sale through PCI-SIG & implementation note in
BASE Spec · Seasim/SigTest (Base) & SigTest (CEM)

32GT/s Rx Calibration

· Variable ISI (34 to 37dB)

· Knobs ­ Same as 16GT/s

· Base Rev2 fixtures under development (MMPX coaxial connector)

· Seasim (Base) ­& SigTest EH Extrapolation under investigation & noise impact

PCI-SIG Developers Conference 2019

Copyright © 2019 PCI-SIG® - All Rights Reserved

18

PCI Express 5.0 Tx/Rx setup details
Configuration details Setup Details

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Tektronix Solution Configuration
PCIE GEN5 BASE TX

Description

Tek P/N QTY Manufacturer Req/Opt

Comments

Dual Stack 50GHz Sx Scope Attenuator Kit

DPS75004SX 1 DPO7RFK2 2

Connector Savers (1.85mm)

103047400 2

TekExpress Gen5 Tx

PCE5

1

TekExpress Gen4 Tx

PCE4

1

Require for B6:I6PPG output & Scope input

PCE3

1

DPOJET Advanced option

DJA

1

Serial Data Link Analysis Software

SDLA64

1

Cable; 2.92-to-2.92mm, Straight, 1.5ps phase-matched, 40GHz

PMCABLE1M 2 pairs

Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix
Swiftbridge

Required 50G or better * Required Attenuator kit + DC Blocks Required 1.85mm scope channel input connection Required TekExpress Gen5 Tx Required TekExpress Gen4 Tx Required TekExpress Gen1/2/3 Tx Required DPOJET advanced option Required Serial Data Link Analysis Software
Required DUT to replica & replica to scope **

* If ATI channels will be used for refclk measurements they will need Option Key 4 (50XL) ** Additional adaptors may be needed if eval & replica boards are not 2.92mm compatible

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Tektronix Solution Configuration
TEST SYSTEM VIEW PCIE GEN5 BASE TX

21 SEPTEMBER 2022

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Tektronix Solution Configuration

PCIE GEN5 CEM TX

Description

Tek P/N QTY Manufacturer Req/Opt

Comments

Dual Stack 50GHz Sx Scope

DPS75004SX

Attenuator Kit

DPO7RFK2

Connector Savers (1.85mm)

103047400

TekExpress Gen5 Tx

PCE5

TekExpress Gen4 Tx

PCE4

TekExpress Gen1/2/3 Tx

PCE3

DPOJET Advanced option

DJA

Serial Data Link Analysis Software

SDLA64

Arbitrary Function Generator

AFG31252

BNC to SMA Adaptor

015-0572-00

USB 2.0 Cable - Type A to Type B Male; 6ft

174-6053-01

Cable; SMA - SMP cable pair

174-6659-01

Cable; 2.92-to-2.92mm, Straight, 1.5ps phasematched, 40GHz Cable; SMP-to-SMP, Right Angle, 2.5ps phasematched
SMP 50 Ohm Terminator

PMCABLE1M 174-6658-xx 131-9399-xx

ATX Power Supply for System Board Power ATX Power Supply

1 2 2 1 1 1 1 1 1 1 1 1 pair
1 pair
1 pair
** 1

Gen 5 CEM Test Fixtures (with MMPX cables) *** TF-PCIE5-CEM-X16 1

Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix Tektronix
Swiftbridge
Tektronix
Tektronix Corsair
Tektronix or PCI-SIG

* If ATI channels will be used for refclk measurements they will need Option Key 4 (50XL) ** Quantity depends upon the link width to be tested: x1 = Qty 0, x4 = Qty 6, x8 = Qty 14, x16 = Qty 30 *** Gen5 CEM Test Fixtures are expected to be backwards compatible for Gen1/2/3/4 Tx, if not then Gen4 fixtures may be required **** It is assumed MMPX cables and MMPX to SMA adaptor cables for test fixture connections are included with the fixture kit

Required Required Required Required Required Required Required Required Optional Optional Optional Optional
Required
Required
Required Required
Required

50G or better * Attenuator kit + DC Blocks 1.85mm scope channel input connection TekExpress Gen5 Tx TekExpress Gen4 Tx TekExpress Gen1/2/3 Tx DPOJET advanced option Serial Data Link Analysis Software For automated DUT Tx pattern toggling For automated DUT Tx pattern toggling Required when using AFG31252 for preset toggling For AFG connection to DUT Rx Lane 0 (toggling)
DUT Tx to Scope
For Manual DUT Preset Toggling ** Required for System DUT power Tektronix fixtures are not officially approved by PCI-SIG ****

21 SEPTEMBER 2022

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Tektronix Solution Configuration
TEST SYSTEM VIEW PCIE GEN5 CEM TX

21 SEPTEMBER 2022

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Tektronix Solution Configuration PCIE GEN5 BASE RX

Description

Tek P/N QTY Manufacturer Req/Opt

Comments

Dual Stack 50GHz Sx Scope Attenuator Kit Connector Savers (1.85mm) Bit Error Rate Tester (BERT) * Tektronix PCIe Gen5 Rx CEM and BASE Automation SW DPOJET Advanced option Serial Data Link Analysis Software Cable; SMA - SMP cable pair (1000mm)

DPS75004SX DPO7RFK2 103047400
** RXSW-xxx-
PCIE5 DJA
SDLA64 174-6659-01

1 2 2 1 1 1 1 1 pair

Tektronix Tektronix Tektronix 3rd Party Tektronix Tektronix Tektronix Tektronix

Required Required Required Required Required Required Required Required

50G or better Attenuator kit + DC Blocks 1.85mm scope channel input connection Configuration provided by 3rd Party ** Available under CAA until 30th Jan 2021 DPOJET advanced option Serial Data Link Analysis Software Refclk connection between DUT & BERT

Cable; 2.92-to-2.92mm, Straight, 1.5ps phase-

matched, 40GHz (1000 mm)

PMCABLE1M 2 pairs

Gen 5 Base Rev3 Test Fixtures ***

TBD

1

Swiftbridge PCI-SIG

Required Required

Equipment connections to relica channel & DUT Rev3 is Meg6 material with MMPX connectors ****

* Cables required for connection between BERT modules shall be included for the 3rd party vendor ** Configuration for BERT provided by 3rd party vendor *** Gen5 BaseTest Fixtures are not backwards compatible for Gen3 & Gen4 Base Rx **** It is assumed MMPX cables and MMPX to SMA adaptor cables for test fixture connections are included with the fixture kit

21 SEPTEMBER 2022

24

Tektronix Solution Configuration
TEST SYSTEM VIEW GEN5 BASE RX CAL + TEST SETUP

TP1 Calibration setup

TP2 Calibration setup
SYS/AIC

BER Tests

Tektronix Receiver Solution

21 SEPTEMBER 2022

25

Tektronix Solution Configuration
PCIE GEN5 CEM RX

Description

Tek P/N QTY Manufacturer

Dual Stack 50GHz Sx Scope

DPS75004SX

1

Attenuator Kit

DPO7RFK2

2

Connector Savers (1.85mm)

103047400

2

Bit Error Rate Testor (BERT) *

**

1

Tektronix PCIe Gen5 Rx CEM and BASE Automation SW

RXSW-xxx-PCIE5

1

DPOJET Advanced option

DJA

1

Serial Data Link Analysis Software

SDLA64

1

Cable; 2.92-to-2.92mm, Straight, 1.5ps phase-matched,

40GHz (1000 mm)

PMCABLE1M

2 pr

Cable; 2.92-to-2.92mm, Straight, 1.5ps phase-matched,

500mm, 40GHz (500 mm)

174-6663-01

1 pr

Cable; SMA-to-SMA, Right Angle-Right Angle, (500mm)

174-6666-01

2 pr

Cable; SMA - SMP cable pair (1000 mm)

174-6659-01

1 pr

Power Divider

MPR40M

2

Right Angle Male-Female 2.92mm adapter

C7035

4

2.92mm Male to 2.92mm Male Adaptor

C7049

3

Active Gen5 Redriver (back channel equalization) ***

1

Power USB Power Strip

PowerUSB - Basic

1

Gen 5 CEM Test Fixtures ****

TF-PCIE5-CEM-X16

1

Tektronix Tektronix Tektronix 3rd Party Tektronix Tektronix Tektronix
Tektronix
Tektronix Tektronix Tektronix Fairview Microwave CentricRF CentricRF Texas Instrument PowerUSB Tektronix or PCI-SIG

* Cables required for connection between BERT modules shall be included for the 3rd party vendor ** Configuration for BERT provided by 3rd party vendor *** Another matched pair of cables (e.g. 174-6663-xx) will be required if the Active redriver is used for Rx or Tx LEQ **** Gen5 BaseTest Fixtures are not backwards compatible for Gen3 & Gen4 Base Rx ***** It is assumed MMPX cables and MMPX to SMA adaptor cables for test fixture connections are included with the fixture kit

Req/Opt

Comments

Required Required Required Required Required Required Required

50G or better Attenuator kit + DC Blocks 1.85mm scope channel input connection Configuration provided by 3rd Party ** Available under CAA until 30th Jan 2021 DPOJET advanced option Serial Data Link Analysis Software

Required

Equipment connection to fixtures and DUT

Required Required Required Required Optional Required Optional Optional Required

Signal Connection between scope and BERT for Tx LEQ Signal Connection between scope and BERT for Tx LEQ & Trigger Refclk connection between DUT & BERT Split signal from DUT Tx to the scope and Error Detector Cable management Power divider output to scope input High loss back channels (DUT Tx to Error Detector) may need EQ Automate DUT power cycle Tektronix fixtures are not officialy approved by PCI-SIG *****

21 SEPTEMBER 2022

26

Tektronix Solution Configuration
TEST SYSTEM VIEW GEN5 CEM RX CALIBRATION

TP1 Calibration

TP2 AIC Calibration

TP2 SYS Calibration

Tektronix Receiver Solution

21 SEPTEMBER 2022

27

Tektronix Solution Configuration

TEST SYSTEM VIEW GEN5 CEM RX TEST

RX LEQ AIC Tests

RX LEQ SYS Tests

Tektronix Receiver Solution

21 SEPTEMBER 2022

28

PCI Express 5.0 Refclk Jitter Measurements
29

Reference Clock Phase Jitter Test
Ref CLK requirements for PCIe 5.0 have become more stringent and testing methodologies have changed
30

Tektronix ­ PCI Express 5.0 Refclk Solution
· Fully Automated Solution ­ TekExpress with Skyworks Clock Jitter Tool
· Targeted Support · High Frequency Jitter Measurements (Gen1 to Gen5) · Optional scope Noise removal algorithm · Refclk DC Specifications and AC Requirements · Data Rate Independent Refclk Parameters
· Real Time Scopes (>=5G BW to meet CEM Spec.) · DPO70K Scope · MSO64 or MSO64B
31

PCI Express 6.0 Specification Status
32

PCIe 6.0 Specification Snapshot (Q3 2022)
· PCIe 6.0 Base Specification ­ Rev 1.0 Released
· Describes chip-level behavior on all levels of the stack
· PCIe 6.0 CEM Specification ­ Rev 0.5 under development
· Card electro-mechanical (CEM) defines system and Add-in Card level
· PCIe 6.0 PHY Test Specification ­ Rev 0.5 under development
· Describes electrical compliance tests for Tx, Rx LEQ, Refclk & PLL Bandwidth
33

Tektronix PCIe Gen6 Solution Landscape

PAMJET (PAM4 Analysis)

Transmitter

Receiver

SDLA

Base

CEM

Ref CLK

PAMJET + DPOJET + SDLA
TekExpress Automation

Base

CEM

Calibration

JTOL

Tektronix Rx Automation

DPOJET Plugin for Debug

Tektronix Innovative Gen6
DSP Tools
21 SEPTEMBER 2022

Released

34

Upcoming / to be announced

Early Gen6 Rx Customer Engagements

Active PCI-SIG & industry participation

Customer engagement

PCI- SIG Developer Conference 2022 · First physical DevCon since 2019 and
added live stream of presentations. · Joint demonstration with Anritsu, Synopsys
& Tektronix on Gen6 Rx! · Electrical Deep session led by Tektronix! :
850 attendees
21 SEPTEMBER 2022

First PCIe 6.0 Rx order from Intel (Folsom)!! · Fastest time to close calibration ~ ½ day · Intel has accepted Anritsu/Tektronix
calibration
36

New Technology Support
· PCIe Gen 6 (32GBd PAM4) · IEEE802.3ck (53GBd PAM4) · USB Gen4 v2 (80Gbps, PAM3)

21 SEPTEMBER 2022

37

Questions
38



References

適用於 Microsoft 365 的 Microsoft PowerPoint