PEX 8525

Features:

􀂃
• 24-lane PCI Express switch - Integrated SerDes
•Up to five configurable ports (x1, x2, x4, x8, x16)
• 31mm x31mm, 644-ball PBGA package
• Typical Power: 2.6 Watts 􀂃 PEX 8525 Key Features
•Standard Compliant
- PCI Express Base Specification, r1.0a
•High Performance
- Non-blocking switch fabric
- Full line rate on all ports
- Packet Cut-Thru with 115ns max packet latency (x8 to x8)
• Flexible Configuration
- Five highly flexible & configurable ports (x1, x2, x4, x8, or x16)
- Configurable with strapping pins, EEPROM, I²C, or Host software
- Lane and polarity reversal
• PCI Express Power Management
- Link power management states: L0, L0s, L1, L2/L3 Ready, and L3
- Device states: D0 and D3hot
• Quality of Service (QoS)
- One Virtual Channel per port
- Eight Traffic Classes per port
- Weighted Round-Robin Ingress Port Arbitration
•Reliability, Availability, Serviceability
- 3 Standard Hot-Plug Controllers
- Upstream port as hot-plug client
- Transaction Layer end-to-end CRC
- Poison bit
- INTA# interrupt signal
- Fatal Error (FATAL_ERR#) signal (legacy SERR equivalent)
- PCIe baseline error reporting
- Advanced Error Reporting
- Port Status bits and GPO available
- Per port error diagnostics
• Bad DLLPs
• Bad TLPs
• CRC errors
- JTAG boundary scan




Description

PEX 8525: 24 Lane, 5 Port PCI Express Switch, 31 x 31mm² PBGAThe ExpressLane™ PEX 8525 device offers 24 PCI Express lanes, capable of configuring up to 5 flexible ports. The switch conforms to the PCI Express Base Specification, rev 1.1. The 24-lane switch enables users to add scalable, high bandwidth I/Os to a wide variety of applications including servers, storage, communications, blade servers, and embedded-control systems. The PEX 8525 is well suited for fan-out, aggregation, dual-graphics, peer-to-peer, and intelligent I/O module applications. The architecture supports packet cut-thru with the industry's lowest latency of 115ns (x8 to x8) for a 24-lane switch. This, combined with large packet memory (1024 byte maximum payload size) and non-blocking internal switch architecture, provide full line-rate on all ports for performance-hungry applications. The PEX 8525 is offered in a 31 x 31mm² 736-ball PBGA package. This device is available in leaded and lead-free packaging.