Xgig 4K4 Xgig4K-PCIe4-X4 4-Lane PCI Express 4.0 Protocol Analyzer Platform

4-lane, 16GTps PCIe 4.0 protocol analyzer chassis that decodes PCIe and NVMe traffic at all layers of the stack, with 32GB capture memory.

Data rate: 16GTps, PCIe 4.0
Compatible data rates: 2.5, 5.0 and 8.0GTps
Link width: up to 4-lanes
Sideband signal triggers: PERST#, PEDET#, PEWAKE#, and CLKREQ#

Datasheet

Overview

The VIAVI Xgig 4K4 Protocol Analyzer provides protocol analysis for PCI Express 4th generation traffic at all layers of the stack. It supports link widths up to 4 lanes and link speeds up to 16GTps, and remains compatible with the lower PCIe data rates of 2.5, 5.0 and 8.0GTps. It belongs to the VIAVI Xgig family of protocol analysis products for NVMe, U.2, M.2 and other storage applications.

The chassis has 32GB of capture memory, with 16GB for upstream and 16GB for downstream traffic. PCIe and NVMe level trigger and search capabilities are intended to shorten debug and problem resolution time. Interposer autotuning restores signal integrity by reducing insertion loss in both directions, which reduces set-up time.

Analysis reports protocol errors at every layer of the PCIe stack, including state and substate level errors in the LTSSM viewer. Additional functions include a configuration space viewer, PCIe link performance measurements, trace view packet compression, and sideband signal triggers for PERST#, PEDET#, PEWAKE# and CLKREQ#. SMBus status can be shown alongside PCIe or NVMe packets in a time-synchronized trace view.

Connectivity and multi-analyzer operation

The Xgig 4K4 attaches to common PCIe and NVMe connector interfaces through a range of Interposers and probes, including CEM adapters, U.2, M.2, OCulink, SFF-8674, EDSFF and solder-down Flying-Lead probes. Tap ports allow multi-analyzer configurations using a single Interposer in the channel, and up to four Xgig time-correlated trace captures can be cascaded. The analyzer also operates with other VIAVI protocol analyzers for Ethernet, SAS and FC, providing time-correlated multi-protocol views. It is controlled from a host PC running the Xgig tool suite, including Trace Control, Expert and Serialytics. When ordering the platform, analyzer licenses and Interposers are selected separately according to the application.

Key Features

16GTps PCIe 4.0 data rate operation, compatible with 2.5, 5.0 and 8.0GTps
Link widths up to 4 lanes
32GB memory (16GB upstream and 16GB downstream)
Memory segmentation for capture of multiple traces
Host-Client connection for remote debugging over Ethernet or local debugging over USB
SMB capture and trigger for NVMe Management Interface (NVMe-MI) observability
Decodes all PCIe and NVMe traffic at all layers of the stack, including TLP, DLLP and PHY layer blocks
Trigger and search events include training sequences, ordered sets, queue pairs, PRPs, Scatter/Gather Lists (SGL) and SMB
Full support of LTSSM for PCI Express
Interposer autotuning to reduce insertion loss in both directions
Tap ports enable multi-analyzer configurations using a single Interposer in the channel
Cascade up to four Xgig time-correlated trace captures
Sideband signal triggers for PERST#, PEDET#, PEWAKE# and CLKREQ#
Configuration space viewer and PCIe link performance measurements
Multicolored front-panel LEDs indicate link speed, lane width and performance
Field replaceable modular fan and power supply assemblies
Works with Interposers for CEM slots, Flying-Lead probes, U.2 (SFF-8639), M.2, SFF-8674, OCulink, EDSFF and others
Supported by the Xgig tool suite including Trace Control, Expert and Serialytics