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PEX 8647

48-Lane, 3-Port PCI Express Gen 2 (5.0 GT/s) Switch, 27 x 27mm FCBGA
The ExpressLane™ PEX 8647 device offers 48 PCI Express Gen 2 (5.0 GT/s) lanes, configured as 3 x16 ports. The switch conforms to the PCI Express Base Specification, rev 2.0. The 48-lane switch enables users to add scalable, high bandwidth, non-blocking interconnection to high-end graphics applications such as high-resolution gaming, high-resolution medical/scientific imaging, and dual-graphics systems. The PEX 8647 boasts the industry's lowest PCIe Gen2 latency at 140ns and unsurpassed performance with its non-blocking architecture, capable of supporting both host-centric as well as true peer-to-peer traffic. The device is hardware configurable and software programmable, allowing users to tailor their port configurations and QoS operating characteristics to suit their application requirements. The PEX 8647 is offered in a 27 x 27mm 676-ball FCBGA. This device is available in lead-free packaging. This device supports Access Control Services (ACS).
Page Index
Related Gen 1 Devices
Related Gen 2 Devices
Supporting Documentation
- PCIe Technical Info & White Papers
- General PLX Product Documentation
- Support Documentation (Quality, FAQs, RoHS...)
Hot Applications
Usage Models
Suitable for host-centric as well as Intelligent I/O applications

PEX 8647 Technical Documentation
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Product Brief | Download | Product Overview | 1.0 | 04/09 | ||
| Data Book | Download | Detailed Technical Specifications | 1.1 | 09/09 | ||
| Design Notes | Download | Power Management Modes, PEX 8600 Products (white paper) | 1.0 | 04/08 | ||
| Download | Dual Cast, 8600 family feature (white paper) | 1.0 | 10/07 | |||
| Download | Read Pacing, 8600 family feature (white paper) | 1.0 | 10/07 | |||
| Download | Dynamic Buffer Pool, 8600 family feature (white paper) | 1.0 | 10/07 | |||
| Download | Error Recovery and Fencing Mechanisms (white paper) | 1.0 | 01/08 | |||
| Download | Quick Start Hardware Design Guide | 1.2 | 01/08 | |||
| Download | Hardware Design Checklist | 1.0 | 10/08 | |||
| Errata | Download | Silicon Errata List | 1.6 | 01/10 | ||
| Interoperability | Download | Interoperability Report | 1.0 | 05/08 | ||
| Application Notes | Download | Using Dual Cast feature of Gen 2 switches | 1.0 | 05/08 | ||
| Download | Gen 2 switch compatibility with Gen 1 devices | 1.2 | 11/09 | |||
| Product Change Notification (PCN) | Download | Product/Process Change Notice, PCN-2008-10 | -- | 11/08 | ||
| Part Numbers Listing | View HTML | Part Number, Listing and Compliance | -- | -- | ||
| Quality & Reliability | Download | RoHS 6/6 Certificate of Compliance (PEX8000 ending with the suffix F or G) | -- | -- | ||
| Download | Moisture/Reflow Sensitivity Classification (IPC/JEDEC J-STD-020D.1) | -- | 03/08 | |||
| Download | ICP Test Report | -- | -- | |||
| Download | RoHS Certificate of Compliance (FCBGA) | -- | -- | |||
| Download | Reliability Qualification Report | -- | -- | |||
| Download | Lead-Free Material Analysis Data (27x27mm) | -- | -- | |||
| Download | Lead-Free Reflow Profile & Peak Temperature | -- | -- | |||
| Download | RoHS Certificate of Compliance (PBGA) | -- | 01/10 | |||
| Download | RoHS 6/6 Certificate of Compliance (PEX86xx Flip Chip BGA products with a suffix \'F\') | -- | -- |
PEX 8647 Development Tools
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Signal Integrity Kit | Download | PLX Gen 2 Testing over "16 / 30" Tyco Comm Backplane (presentation) | 1.0 | 12/08 | ||
| Download | PCIe Receiver Equalization (white paper) | 1.0 | 12/08 | |||
| Download | Using PEX 8648 SMA based (SI) Card (white paper) | 1.0 | 12/08 | |||
| Download | PLX PCI Express over 30" of Legacy Backplane (white paper) | 1.0 | 07/08 | |||
| Download | Tool provides loss estimation and bandwidth distortion for a specified trace distance and configuration. | 2.0 | 06/08 | |||
| Rapid Development Kit (RDK) | Download | RDK Schematic | 2.0 | 07/08 | ||
| Download | Hardware Reference Manual | 1.2 | 11/08 | |||
| Software Development Kit (SDK) | View HTML | Software Development Kit | -- | -- | ||
| BSDL | Download | Boundary Scan Description Language files | 1.0 | 02/09 | ||
| HSPICE Model | Download | HSPICE Model | 1.0 | 04/09 | ||
| OrCAD | Download | OrCAD Library | 1.1 | 07/08 | ||
| GERBER | Download | Preliminary RDK Gerber files | 0.82 | 01/08 |
PEX 8647 Applications
| Application | Description | Document | |
|---|---|---|---|
| Graphics/Video | Dual Graphics | High Performance Fan-Out & Peer-to-Peer Communication | ExpressApps#49 (PDF) |
| Servers | Blade | Servers - Create PCIe Ports & End Points | ExpressApps#44 (PDF) |
| Communications | Router/Switch | Create High Throughput & Performance | ExpressApps#50 (PDF) |
| Communications & Embedded | MicroTCA -- Create MCH Switch Fabric with PCI Express | ExpressApps#47 (PDF) |
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