Xgig 8-lane CEM-slot Interposer Xgig4K-PCIe4-X8-AI for PCI Express 4.0
8-lane PCIe CEM-slot interposer that taps host-to-endpoint traffic at up to 16GTps for the VIAVI Xgig PCIe 4.0 Analyzer/Jammer.
- Maximum data rate
- 16GTps, PCIe 4.0
- Downward-compatible data rates
- 2.5, 5.0 and 8.0GTps
- Link width
- Up to and including 8-lanes (bi-directional)
- Top edge connector
- 16-lane CEM slot connector
Overview
The VIAVI Xgig 8-lane CEM-slot Interposer (Xgig4K-PCIe4-X8-AI) connects the VIAVI PCIe 4.0 Analyzer/Jammer chassis to a system under test. It is used to debug and verify new ICs, new system hardware designs and FPGA firmware, to validate system BIOS and software, and to support manufacturing test.
The interposer is installed in an 8- or 16-lane PCIe CEM slot, a slot type found in many servers, workstations and desktop PCs. An endpoint card is then inserted into the interposer's top-edge 16-lane slot connector, which creates the test data path. Four SFF-8674-equivalent custom cables connect the interposer to the Analyzer/Jammer chassis. The interposer runs at up to 16GTps (PCIe 4.0) across 8 lanes in both directions. It also supports the PCIe data rates of 2.5, 5.0 and 8.0GTps. The interposer needs an open chassis while it is in use.
Signal path
High-speed linear signal redrivers buffer the system data signals between the PCIe slot and the PCB fingers. This delivers a clean signal to both the Analyzer and the DUT for protocol capture. In Analyzer mode, DUT data is tapped from the upstream and downstream paths. In Jammer mode or Analyzer/Jammer mode, the data path is switched so that traffic is routed into and out of the Analyzer. This allows error injection.
Software
The interposer works with the Xgig tool suite, including Trace Control, Expert and Serialytics.
Key Features
- Supports link widths up to and including 8 lanes
- Operates up to 16GTps, PCIe 4.0 data rates
- Downward compatible with PCIe data rates of 2.5, 5.0 and 8.0GTps
- Top edge 16-lane CEM slot connector accepts all endpoint DUT adapter cards
- Bottom edge 8-lane PCB finger connector installs into the host test system's PCIe slot
- Supplied with four SFF-8674 equivalent custom cables for Analyzer attachment
- Data path uses high-speed linear redrivers for signal capture with minimal tuning
- Supports Analyzer sideband signal triggering and capture via custom cable
- Supports clock and trigger I/O
- Interposer power is independent of the host system
- Power supply included: 120/220 input, 12V/3A output
- Custom, exchangeable brackets for secure chassis and endpoint card installations
- LEDs indicate power and operation
- Design based on the PCIe Card Electro-Mechanical (CEM) specification
- Supports error injection for system analysis and debug
- Consistent, repeatable capture of link training, equalization negotiation and other in-band and side-band data
- Supported by Xgig tool suite including Trace Control, Expert and Serialytics
Specifications
| Maximum data rate | 16GTps, PCIe 4.0 |
|---|---|
| Downward-compatible data rates | 2.5, 5.0 and 8.0GTps |
| Link width |
Up to and including 8-lanes (bi-directional)
The web page overview states 4-lanes (bi-directional); datasheet states 8-lanes
|
| Top edge connector |
16-lane CEM slot connector
Accepts all endpoint DUT adapter cards
|
| Bottom edge connector |
8-lane PCB finger connector
Installs into the host system's 8- or 16-lane PCIe slot (datasheet p.2); web page also lists 4-lane slots
|
| Analyzer cable connectors | Four SFF-8674 cable connectors |
| Auxiliary I/O | Side-band signal connector; clock and trigger I/O |
| Compatible analyzer | VIAVI Xgig4K-PCIe4-X16 Analyzer/Jammer chassis |
| Format | Design based on the PCIe Card Electro-Mechanical (CEM) specification |
|---|---|
| Size | 168mm deep x 176mm tall x 15mm thick |
| Power supply |
120/220 input, 12V/3A output
Interposer power is independent of host system
|
| Indicators | LEDs for power and operation |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- IC development, debug and validation
- New system hardware design verification
- FPGA firmware debug
- System BIOS and software validation
- Subsystem and system-level testing
- Firmware and driver development and validation
- Performance analysis
- Manufacturing test
Included
- PCIe 4.0 8-lane CEM Interposer card (1)
- High-performance SFF-8674 custom cables (4)
- Sideband cable (1)
- MCX coax cables for optional clock (2)
- Power supply, 120/220 input, 12V/3A output (1)
- Replaceable bracket kit (1)
Options & Accessories
| Option | Description |
|---|---|
| Xgig4K-PCIe-X8-AI-H1 | 1-year extended hardware warranty |
Documents & Resources
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