Xgig SFF-8674 4-lane Interposer Module Xgig4K-PCIe4-X4-8674 for PCI Express 4.0
Active 4-lane SFF-8674 interposer that taps PCIe 4.0 traffic at up to 16GTps for protocol analysis on VIAVI Xgig 4K analyzers.
- Connector
- SFF-8674 (mini-SAS HD)
- Link width
- up to 4-lanes
- Maximum data rate
- 16GTps
- Backward-compatible data rates
- 2.5, 5.0 and 8.0GTps
Overview
The VIAVI Xgig SFF-8674 4-lane Interposer for PCI Express 4.0 (Xgig4K-PCIe4-X4-8674) is an active interposer that taps PCIe data signals at an SFF-8674 (mini-SAS HD) connector and feeds them to a VIAVI Xgig 4K PCIe 4.0 Analyzer. It enables protocol analysis of communication between an SFF-8674 attached host chassis port and an endpoint chassis or device.
Bidirectional PCIe 4.0 protocol data on each of the four lanes is captured at up to 16GTps, with downward compatibility to PCIe gen-1, gen-2 and gen-3 rates. Custom low-loss SFF-8674 cables connect the interposer to the analyzer, and multiple units can be operated in parallel to cover links up to 16 lanes.
The data path uses high-speed linear redrivers that buffer the system signals so that a clean signal reaches both the analyzer and the devices under test. The interposer is powered independently of the host system by an external power supply, has no fan, and provides LEDs for power and status indication, a side-band signal connector, and optional REFCLK in/out MCX connectors.
Applications and operating modes
Together with the VIAVI PCIe 4.0 Analyzer/Jammer platform, the interposer supports debug and validation of peripheral devices, host systems, firmware and drivers, as well as system BIOS and software, PCIe chassis-to-chassis (server-to-JBOD/F) communications and manufacturing test. In Analyzer mode the DUT data is tapped from both upstream and downstream paths; in Jammer or Analyzer/Jammer mode the data is redirected through the analyzer chassis, enabling error injection. Captured traffic is analyzed with the Xgig tool suite, including Trace Control, Expert and Serialytics.
Several versions of the interposer are available, differing in the side-band signal definitions at the interface: a PCIe standard pinout version and a custom pinout version.
Key Features
- Operates up to 16GTps, PCIe gen-4 data rates
- Downward compatible with PCIe gen-1, gen-2 and gen-3 data rates of 2.5, 5.0 and 8.0GTps
- SFF-8674 host and target connections support PCIe links of up to 4 lanes
- Multiple interposers can be used with links to 16 lanes
- Supplied with two SFF-8674 equivalent custom cables for the analyzer plus two cables for DUT attachment
- Data path uses high-speed linear redrivers for good signal capture with minimal tuning
- Supports analyzer side-band signal capture and triggering in multiple formats
- Two coax cables supplied for optional clocking sources
- Interposer power is independent of the host system
- 120/220 AC in, 12V/3A DC output converter included
- LEDs give quick indication of power and status
- No fan design
- Works together with VIAVI Xgig 4K Analyzer platforms
- Consistent, repeatable capture of link training, equalization negotiation and other data traffic
- Supports error injection for deep system analysis
- Supported by the Xgig tool suite including Trace Control, Expert and Serialytics
Specifications
| Connector |
SFF-8674 (mini-SAS HD)
Host and target (DUT) connections
|
|---|---|
| Link width |
up to 4-lanes
Multiple interposers can be used with links to 16-lanes
|
| Maximum data rate |
16GTps
PCIe gen-4
|
| Backward-compatible data rates |
2.5, 5.0 and 8.0GTps
PCIe gen-1, gen-2 and gen-3
|
| Data path | High-speed linear redrivers |
| Clock connectors | Optional REFCLK in/out MCX connectors |
| Side-band |
Side-band signal connector
Analyzer side-band signal capture and triggering in multiple formats
|
|
Pinout
Xgig4K-PCIe4-X4-8674N
|
PCIe standard pinout |
|
Pinout
Xgig4K-PCIe4-X4-8674B
|
Custom pinout |
| Size (L x W x H) |
112 x 150 x 30 mm
incl. rubber stands
|
|---|---|
| Cooling | No fan design |
| Indicators | LEDs for power and status |
| Power supply |
120/220 AC in, 12V/3A DC output converter
Interposer power is independent of host system
|
|---|
| Analyzer platform |
VIAVI Xgig 4K Analyzer platforms
PCIe 4.0 Analyzer/Jammer platform
|
|---|---|
| Software | Xgig tool suite including Trace Control, Expert and Serialytics |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Analysis of PCIe traffic across an SFF-8674 4-lane cable connection
- Debug and validation of systems with mini-SAS HD 4X/SFF-8674 interfaces
- Test and debugging of peripheral devices
- Host system, firmware and driver debugging
- System BIOS and software validation
- PCIe chassis-to-chassis (server-to-JBOD/F) communications
- Manufacturing test
Included
- SFF-8674, 4-lane Interposer pod for PCIe 4.0 (1)
- SFF-8674 custom high-performance cables to Analyzer chassis, purple tab (2)
- SFF-8674 DUT pass-through cables (2)
- Sideband signal cable to Analyzer (1)
- MCX 50-Ohm coax cables for optional clock (2)
- Power brick, 120/220 input, 12V/3A output (1)
- Quick Start Guide (1)
Options & Accessories
| Option | Description |
|---|---|
| Xgig4K-PCIe4-X4-8674N | SFF-8674 Active Interposer, 16GTps, 4-lane, for PCIe 4.0 — PCIe standard pinout |
| Xgig4K-PCIe4-X4-8674B | SFF-8674 Active Interposer, 16GTps, 4-lane, for PCIe 4.0 — Custom pinout |
| Xgig4K-PCIe4-X4-8674-H1 | 1-year extended hardware warranty |
Documents & Resources
Related Products
Analysis software included with all Xgig Analyzers that automatically examines captured traces to find protocol, performance and physical-layer issues.
16-lane PCIe 4.0 protocol analyzer and jammer chassis with 128 GB capture memory, supporting link speeds up to 16 GT/s.
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.