PCIe Gen4 correlation report

SSD platform

10th Jan, 2018

2

Sl.No Signal Name SpeedSimulation

conditionDetails

1

PCIE GEN4:

RX0

PCIE Gen4

-

16Gbps

Eye Analysis

Timing Analysis: Simulated eye is withn the eye mask

specification as provided in PCI Express Base specification

REV4, ver1 specification.

Correlation Analysis: Tool simulation matches with the real time

measurement data.

2

PCIE GEN4:

TX0

PCIE Gen4

-

16Gbps

Eye Analysis

Timing Analysis: Simulated eye is withn the eye mask

specification as provided in PCI Express Base specification

REV4, ver1 specification.

Correlation Analysis: Tool simulation differes from the real time

measurement data.

Result Summary

2018 Copyright Mobiveil Inc.2/22/2019

Model assignments

32018 Copyright Mobiveil Inc.2/22/2019

Device Manufacturer Part number File type Version Remarks

Xilinx_UltraScal

ePlus_GTY_IBI

S_AMI_model

Xilinx XCZU19EG-

2FFVC1760I

IBIS-AMI modelAMI modelsTX model:

xilinx_ultrascaleplus_gty_ami_tx.amiRX

model:xilinx_ultrascaleplus_gty_ami_rx.amiIBI

S modelsTX model:

xilinx_ultrascaleplus_gty_ami_tx.ibsRX model:

xilinx_ultrascaleplus_gty_ami_rx.ibsdll filesTX

model:xilinx_ultrascaleplus_gty_ami_tx.dllRX

model:xilinx_ultrascaleplus_gty_ami_rx.dllPack

age modelsTX model:

Xilinx_ultrascaleplus_gty_tx_Package.s4pRX

model:

Xilinx_ultrascaleplus_gty_Rx_Package.s4p

6.0

We have used Tx

and Rx model as

xilinx_ultrascaleplus_gt

y_ami models in both

ends since the RX end

model is unknown.

PCIe edge

connectorMolex 87715-013 SP-87715-013_RevA.s20p revA

Same connector

models is used for

PCIE host since the

unavailability of Host

connector model.

Straddle mount

connectorAmphenol

10146027-

A40010LF

PCIe Gen4 Straddle Mount

iTRL_pass_r_verB.s24pREV1 -

4

PCIE Gen4 Eye Specification

2018 Copyright Mobiveil Inc.2/22/2019

PCIE Gen4 eye specifications

Eye specification: Eye spec is taken from PCIE-SIG standard (PCI Expess base Specification Ver4.0).

5

EYE ANALYSIS PCIe GEN4

2018 Copyright Mobiveil Inc.2/22/2019

2/22/2019 2018 Copyright Mobiveil Inc. 6

Simulation Topology

2/22/2019

TX CHANNEL Topology

RX CHANNEL Topology

2/22/2019 2018 Copyright Mobiveil Inc. 7

Best case IBIS AMI settings

TX setting: RX settings:

2/22/2019 2018 Copyright Mobiveil Inc. 8

EYE: PCIE GEN4: RX0 (Default)

Waveform comment: Simulated Eye met the eye mask spec of PCI express base specification.

Operating Speed : 16Gbps

Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Simulated value @ BER floor 10-12:Eye Height: 136mV (68mVpp)

Eye width: 0.5UI

2/22/2019 2018 Copyright Mobiveil Inc. 9

EYE: PCIE GEN4: RX0 (Optimized)

Waveform comment: Simulated Eye met the eye mask spec of PCI express base specification.

Operating Speed : 16Gbps

Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Simulated value @ BER floor 10-12:Eye Height: 216mV (108mVpp)

Eye width: 0.45UI

2/22/2019 2018 Copyright Mobiveil Inc. 10

EYE: PCIE GEN4: TX0 (Default)

Waveform comment: Simulated Eye met the eye mask spec of PCI express base specification.

Operating Speed : 16Gbps

Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Simulated value @ BER floor 10-12:Eye Height: 125mV (62.5mVpp)

Eye width: 0.45UI

2/22/2019 2018 Copyright Mobiveil Inc. 11

EYE: PCIE GEN4: TX0 (Optimized)

Waveform comment: Simulated Eye met the eye mask spec of PCI express base specification.

Operating Speed : 16Gbps

Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Simulated value @ BER floor 10-12:Eye Height: 209mV (104.5mVpp)

Eye width: 0.42UI

2/22/2019 2018 Copyright Mobiveil Inc. 12

Measurement setup

2/22/2019

Probing is done at BGA vias for both TX and RX channels

Complete measurement setup:

DSO setup

PCB connection setup

2/22/2019 2018 Copyright Mobiveil Inc. 13

Measurement setup (Zoomed View)

2/22/2019

Probing was done at BGA vias for both TX and RX channels

DSO setup

PCB connection setup

Front View

Side View

2/22/2019 2018 Copyright Mobiveil Inc. 14

EYE: PCIE GEN4: RX0

Waveform comment: Measured Eye met the eye mask spec of PCI express base specification.

Operating Speed : 16Gbps

Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Measured value: Eye Height: 248mV

Eye width: 37.3380ps (0.59UI)

2/22/2019 2018 Copyright Mobiveil Inc. 15

EYE: PCIE GEN4: TX0

Waveform comment: Measured Eye met the eye mask spec of PCI express base specification.

Operating Speed : 16Gbps

Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Measured value: Eye Height: 108.4 mV

Eye width: 29.621ps (0.47UI)

16

Measurement Correlation PCIe GEN4

2018 Copyright Mobiveil Inc.2/22/2019

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EYE: PCIE GEN4: RX0

Waveform comment: Simulated Eye & Measured Eye met the eye mask spec of PCI express base

specification.

Operating Speed : 16Gbps Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Measured value: Eye Height: 248mVpp

Eye width: 37.3380ps (0.59UI)

Simulated value @ BER floor 10-12:Eye Height: 216mV (108mVpp)

Eye width: 0.45UI

2/22/2019 2018 Copyright Mobiveil Inc. 18

EYE: PCIE GEN4: TX0

Waveform comment: Simulated Eye & Measured Eye met the eye mask spec of PCI express base

specification.

Operating Speed : 16Gbps Specification:Eye Height: 15mVpp

Eye width: 0.3UI

Measured value: Eye Height: 108.4 mVpp

Eye width: 29.621ps (0.47UI)

Simulated value @ BER floor 10-12:Eye Height: 209mV (104.5mVpp)

Eye width: 0.42UI