Post on 02-Oct-2020
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