Cross-layer analysis

Interoperability issues can lead to finger-pointing exercises that cost money and time-to-market. Teledyne LeCroy CrossSync PHY software and interposers seamlessly merge the functions of your Teledyne LeCroy protocol analyzer and oscilloscope – giving insight into link behavior that no other instrument can provide.

 
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The CrossSync PHY concept

CrossSync PHY enables waveforms from Teledyne LeCroy oscilloscopes to be viewed alongside protocol analyzer traces, with complete time-correlation of electrical and protocol information for easy and powerful validation and root-cause analysis.

A growing range of CrossSync PHY capable interposers eliminates the complexity of cross-probing the same interface for capture by both the protocol analyzer and oscilloscope.

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Validate and debug active link operation

  • CrossSync PHY capable interposers enable observation of both electrical and protocol behavior without disturbing the link
  • Sideband signals, reference clock and power rails are all easily accessible to oscilloscope probes
  • Optional high-bandwidth oscilloscope probing points for PCI Express data lanes

Quickly resolve interoperability issues by capturing the entire protocol stack

  • Trigger protocol analyzer and oscilloscope captures on the same high-level event
  • Easily measure timing relationships between protocol and electrical domains
  • Faster root-cause analysis means fewer costly finger-pointing exercises

Analyze link training with integrated physical and protocol views

  • Observe electrical-level results of protocol-level commands
  • Combined navigation means always knowing which protocol and electrical behaviors happen at the same time
  • No single instrument can deliver this level of cross-layer insight into link training

More visibility

CrossSync PHY gives deeper insight and more visibility into the most complex behaviors in a PCI Express link. Link training, power-on operations, and power management transitions all involve interactions between protocol and electrical layers.

Dynamic Link Behavior

  • Characterize entire boot sequence with visibility into sideband signals, reference clock, data lanes and power rails.
  • Observe speed changes in both electrical and protocol domains.
  • Trigger on problematic link training behaviors and analyze their consequences through the entire protocol stack.

Quickly resolve interoperability issues

  • Trigger protocol analyzer and oscilloscope captures on the same high-level event
  • Easily measure timing relationships between protocol and electrical domains
  • Faster root-cause analysis means fewer costly finger-pointing exercises

Analyze link training

  • Observe electrical-level results of protocol-level commands
  • Combined navigation means always knowing which protocol and electrical behaviors happen at the same time
  • No single instrument can deliver this level of cross-layer insight into link training behavior

CrossSync PHY cross-analysis software

The CrossSync PHY software option for your Teledyne LeCroy oscilloscope enables precise, intuitive navigation between time-correlated protocol analyzer and oscillscope traces.

  • 1CrossSync PHY navigation bar makes clear the timing relationship between linked protocol analyzer and oscilloscope captures.
  • 2One or many oscilloscope acquisition segments are represented in the navigation bar.
  • 3Protocol analyzer trace represented in the navigation bar.
  • 4Common trigger point ensures precise timing alignment between protocol trace, oscilloscope acquisitions, and navigation bar view.
  • 5Oscilloscope timebase and protocol analyzer acquisition window remain synchronized while navigating through the combined acquisition, for total confidence in timing behavior.
  • 6Selecting a packet on the protocol trace enables zoom traces on the oscilloscope to the same time window, enabling sub-packet-level measurement precision

CrossSync PHY interposers

CrossSync PHY capability enhances Teledyne LeCroy’s industry-leading set of protocol analysis interposers by adding high-fidelity oscilloscope probing points with simple and convenient signal access.

  • 1Transparent signal path between host and endpoint, with convenient connections to both protocol analyzer and oscilloscope.
  • 2Simple, low-loading direct connection for Teledyne LeCroy DH series oscilloscope probes up to 30 GHz bandwidth – no soldering required.
  • 3Easy access to all sideband signals.
  • 4High-bandwidth voltage and current connections for monitoring dynamic power rail behavior.
  • 5High-fidelity buffered reference clock connection for observing clock behavior during power-up and low-power states.
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Compatible Protocol Analysis products

Summit T54 Protocol Analyzer

  • Protocol Analyzer for PCI Express 5.0 and CXL (Compute Express Link)
  • Supports x1, x2 and x4 Links at data rates of 2.5GT/s, 5GT/s, 8GT/s, 16GT/s and 32GT/s
  • Trace buffer up to 64GB
  • Can be cascaded to support x8 Link Widths with up to 128GB of trace buffer
  • Support for Storage Protocol Decodes for NVMe, NVMe-MI, SATA Express and SCSI Express (SOP-PQI)
  • Support for sideband signals SMBus, CLKREQ#, WAKE#, PERST#
  • Uses CATC Trace software including Spreadsheet view, LTSSM State View and BitTracer
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PCI Express 4.0 x4 M.2 M-Key Interposer

  • Supports PCI Express M.2 M-Key connectors up to x4 Link Width
  • Supports Data Rates up to 16GT/s
  • CrossSync PHY capable allowing direct connection of High Speed and Sideband signals to Oscilloscope
  • Power rail probe points allowing Voltage and Current measurements on Oscilloscope
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Compatible Oscilloscope products

LabMaster 10 Zi-A

  • Up to 65 GHz real-time bandwidth
  • Supports PCI Express measurements to PCIe 5.0 and beyond
  • Powerful server-class PC with 20 processor cores and up to 192 GB system RAM for fast processing of long waveforms
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WaveMaster 8 Zi-B

  • Up to 33 GHz real-time bandwidth
  • Supports PCI Express measurements to PCIe 4.0
  • Flexible inputs support 1 Mohm passive and current probes with no adapters necessary
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RP4030 Active Voltage Rail Probe

  • Connect directly to CrossSync PHY interposers with no soldering required
  • Up to 30 GHz bandwidth, low noise, low loading
  • Other tips available: solder-in (standard and high-sensitivity), high-temperature solder-in, handheld browser, QuickLink adapter
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DH Series high-bandwidth differential probes

  • Connects directly to CrossSync PHY interposers with no soldering required
  • 4 GHz bandwidth with low noise and ±30V Offset Capability
  • 50 kΩ DC Input Impedance for low loading
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QualiPHY PCIe test automation software

  • Automates LabMaster and WaveMaster oscilloscopes and Anritsu MP1900A BERT to perform PCI Express compliance and characterization testing
  • Available for PCI Express 3.0, 4.0 and 5.0
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PCI Express decode

  • Decode PCI Express signals up to data link layer directly in the oscilloscope user interface
  • Covers all rates up to PCIe 5.032 GT/s
  • Decode information is annotated on the voltage waveform
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