PEX 8749
48-Lane, 18-Port PCI Express Gen 3 (8 GT/s) Switch, 27 x 27mm FCBGA
The ExpressLane™ PEX 8749 is a 48-lane, 18-port, PCIe Gen 3 switch device developed on 40nm technology. PEX 8749 offers Multi-Host PCI Express switching capability that enables users to connect multiple hosts to their respective endpoints via scalable, high-bandwidth, non-blocking interconnection to a wide variety of applications including servers, storage, communications, and graphics platforms. In addition to high number port count, the device offers on-chip DMA engines, two NT ports and clock isolation capability. Due to their backwards compatibility, designing with PCIe Gen3 switches in mixed (Gen1, Gen2 and Gen3) systems allows designers to future-proof their designs for full Gen3 enablement when migrating to next-generation end-points. The PEX 8749 is well suited for fan-out, aggregation, and peer-to-peer traffic patterns. Included is PLX's proprietary visionPAK debug software, which allows, for example, internal receive-eye observation after equalization and access to the devices' internal debug registers thus enabling faster time to market.
Page Index
Related Gen 3 Devices
Related Gen 2 Devices
Related Gen 1 Devices
Supporting Documentation
- PCIe Technical Info & White Papers
- Company Overview, Product Snapshots
- Support Documentation (Quality, FAQs, RoHS...)
Usage Models
PCI Express-Based Server Motherboard Featuring SSD's
PEX 8749 Technical Documentation
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Product Brief | Download | Product Overview | 1.0 | 22Aug11 | ||
| Data Book | Download | Detailed Technical Specifications | 1.0 | 31Mar12 | ||
| Design Notes | Download | Quick Start Hardware Design Guide | 1.0 | 20Oct11 | ||
| Errata | Download | Silicon Revisions and Errata List | 1.0 | 01May12 | ||
| Application Notes | Download | PCIe Gen3 Switch Tuning Guide | 1.1 | 21May12 | ||
| Download | Proof of concept high-performance PCIe Gen3 over optical cable with no special software or hardware | 1.0 | 15Nov11 | |||
| Download | White Paper: Independent SSC Operation without SSC Clock Isolation (also see video) | 1.0 | 11May12 | |||
| Migration Document | Download | PEX8748 to PEX8749 Migration | 1.0 | 30Sep11 | ||
| Videos | View HTML | Independent SSC using PCI Express. Join us at FreeSSC@plxtech.com to make this feature a validated PLX standard offering | 1.0 | 03May12 | ||
| View HTML | IO Sharing via PLX PCIe Switches | -- | Oct 2010 | |||
| View HTML | PCI Express 3.0 over Optical Cable | -- | Oct 2010 | |||
| View HTML | PCI Express Clustering for next generation data centers | -- | Oct 2010 | |||
| View HTML | PCI Express Gen3, The Ultimate Choice - Inside and Outside the Box | -- | 27Sep11 | |||
| Quality & Reliability | Download | Certificate of Compliance (CoC) - REACH/RoHS | 1.0 | 10May12 | ||
| Download | Full Product Reliability Qualification Report | 3.0 | 22Dec11 | |||
| Download | Package Material Composition and Mass Calculation | -- | 26Mar12 | |||
| Download | Reflow Profile | -- | 19Jan12 | |||
| Webinars | View HTML | About PLX PCIe Gen3 Switches (may require Webex plug-in) | -- | 05Oct11 |
PEX 8749 Development Tools
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Signal Integrity Kit | Download | Tool provides loss estimation and bandwidth distortion for a specified trace distance and configuration. | 2.0 | 06/08 | ||
| Rapid Development Kit (RDK) | Download | Hardware Reference Manual | 1.0 | 05Oct11 | ||
| BSDL | Download | Boundary Scan Description Language (BSDL) files | -- | 23Sep11 | ||
| HSPICE Model | Download | HSPICE | -- | 12Dec11 | ||
| OrCAD | Download | OrCad Symbol | -- | 30Sep11 | ||
| Design Guidelines | Download | PCB Layout Review Guide | 1.0 | 11Oct11 |
Relevant Press Releases
PEX 8749 Applications
| Application | Description | Document | |
|---|---|---|---|
| Speed Bridge | PCIe Gen 3 (8.0GT/s) speeds | ExpressApps #85 (PDF) |
|