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PEX 8608

8 Lane, 8 Port PCI Express Gen 2 (5.0 GT/s) Switch, 15 x 15mm PBGA
The ExpressLane™ PEX 8608 device offers 8 PCI Express Gen 2 (5.0 GT/s) lanes, capable of configuring up to 8 flexible ports. The switch conforms to the PCI Express Base Specification, rev 2.0. The PEX 8608 architecture supports packet cut-thru with the industry's lowest latency of 140ns (x4 to x1) and offers two virtual channels for traffic prioritization in the system. This, combined with large packet memory (2048 byte maximum payload size) and non-blocking internal switch architecture, provide full line-rate on all ports. The PEX 8608 supports both host-centric as well as true peer-to-peer traffic. The PEX 8608 also features an on-chip Non-Transparent port for dual-host and failover applications and supports dual-clock domain operation by virtue of support for Spread Spectrum Clock (SSC) isolation. This switch is hardware configurable and software programmable, allowing users to tailor their port configurations and quality-of-service system needs to suit their application requirements. This device can be used in a wide variety of applications including control planes in the communications and networking markets, intelligent adapter cards and embedded systems. The PEX 8608 is offered in a 15 x 15mm 196-ball PBGA and is available in both leaded and lead-free packaging. This device supports Access Control Services (ACS).
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...)
Hot Applications
Usage Models
Suitable for host-centric as well as Intelligent I/O applications

PEX 8608 Technical Documentation
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Product Brief | Download | Product Overview | 1.2 | 05/09 | ||
| Data Book | Download | Detailed Technical Specifications | 1.3 | 31Mar11 | ||
| Design Notes | Download | Dual Cast, 8600 family feature (white paper) | 1.0 | 10/07 | ||
| Download | Dynamic Buffer Pool, 8600 family feature (white paper) | 1.0 | 10/07 | |||
| Download | Error Injection (white paper) | 1.0 | 07/10 | |||
| Download | Hardware Design Checklist | 1.0 | 11/09 | |||
| Download | Non-Transparent Mode: Setup & Demonstration (white paper) | 1.0 | 04/09 | |||
| Download | Power Management Modes, PEX 8600 Products (white paper) | 1.0 | 04/08 | |||
| Download | Quick Start Hardware Design Guide | 1.2 | 12/09 | |||
| Download | Read Pacing, 8600 family feature (white paper) | 1.0 | 10/07 | |||
| Download | REXT Resistor Guidelines | 1.1 | 05Aug11 | |||
| Errata | Download | Silicon Errata List | 1.6 | 09July11 | ||
| Interoperability | Download | Interoperability Report | 2.0 | 06/09 | ||
| Application Notes | Download | Gen 2 switch compatibility with Gen 1 devices | 1.2 | 11/09 | ||
| Download | Performance Metrics White Paper | 1.0 | 07Oct10 | |||
| Download | Performance Monitor Feature (white paper) | 1.0 | 05Jan11 | |||
| Download | Timing Specifications for EEPROM, I2C, and JTAG | 1.1 | 24Aug10 | |||
| Download | Using a PCIe Switch as a Bandwidth Bridge | 1.0 | 04/10 | |||
| Download | Using Dual Cast feature of Gen 2 switches | 1.0 | 05/08 | |||
| Videos | 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 | |||
| Product Change Notification (PCN) | Download | PCN-2010-14: Final Test Location (ASE Kaohsiung Taiwan) | 1.0 | 26Oct10 | ||
| Download | PDN-2011-4: Product Discontinuance Notice of select revisions/packages | -- | 22Dec11 | |||
| Ordering Information | View HTML | Part Number, Listing and Compliance | -- | -- | ||
| Quality & Reliability | Download | Certificate of Compliance (CoC) -- REACH | -- | 28Jan11 | ||
| Download | Green 15x15 PBGA Materials Analysis Data Report | -- | 04/09 | |||
| Download | ICP Test Report | -- | 27Sep10 | |||
| Download | ICP Test Reports | -- | -- | |||
| Download | Material Analysis Data, Green (35x35mm) | -- | 15Feb11 | |||
| Download | Moisture/Reflow Sensitivity Classification (IPC/JEDEC J-STD-020D.1) | -- | 03/08 | |||
| Download | Reliability Qualification Report | -- | 06/09 | |||
| Download | RoHS 6/6 Certificate of Compliance (PEX86xx Flip Chip BGA products with a suffix 'F') | -- | -- | |||
| Webinars | View HTML | About PLX PCIe Gen3 Switches (may require Webex plug-in) | -- | 05Oct11 |
PEX 8608 Development Tools
| Document/Resources | Everyone Access | Requires Membership | Requires NDA | Description | Version | Date |
|---|---|---|---|---|---|---|
| Signal Integrity Kit | Download | PCIe Receiver Equalization (white paper) | 1.0 | 12/08 | ||
| Download | PLX Gen 2 Testing over "16 / 30" Tyco Comm Backplane (presentation) | 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 | |||
| Download | Using PEX 8648 SMA based (SI) Card (white paper) | 1.3 | 20Jul10 | |||
| Rapid Development Kit (RDK) | Download | Hardware Reference Manual | 1.3 | 06Aug10 | ||
| Software Development Kit (SDK) | View HTML | Software Development Kit | -- | -- | ||
| BSDL | Download | Boundary Scan Description Language files | -- | 03/09 | ||
| HSPICE Model | Download | HSPICE Model | -- | 04/09 | ||
| OrCAD | Download | OrCAD Design Files for Add-in Card RDK | -- | 12/08 | ||
| Download | OrCAD Library Files for the PEX 8608 | -- | 12/08 | |||
| Pinout Document | Download | Pinout List | 1.1 | 01/10 | ||
| Design Guidelines | Download | PCB Layout Review Guide | 1.0 | 11Oct11 |
Relevant Press Releases
PEX 8608 Applications
| Application | Description | Document | |
|---|---|---|---|
| Bandwidth Bridge | Gen 2 speeds; Low power; small package; Fan-Out | ExpressApps #77 (PDF) |
|
| Communications | Router/Switch | PCIe Connectivity & Fan-Out | ExpressApps #60 (PDF) |