PEX8114 PLX | Alldatasheet
Document overview
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Technical content
Features
General Features o Forward and Reverse bridging o Reverse bridging root functions o Transparent bridging o Standard 256 Plastic BGA package (17mm x 17mm) o Leaded and lead-free ROHS versions available o Low power – 2W o No heat sink required o EEPROM configuration option o 1.0 V core supply voltage o DC and AC JTAG (1149.1 and 1149.6) Scalable PCI Express Interface o x4 Link (configurable as x1, x2 or x4) o Full-duplex PCI Express lanes;
2.5 Gbps each
o Link training (auto-negotiate to smallest link width) o 256 byte maximum payload size o PCI Express Base specification 1.0a compliant o End-to-end CRC and data poisoning o Advanced error reporting o Link and device power management o Advanced flow control o Hot Plug o Turn off unused lanes for power reduction Advanced PCI-X Interface o PCI-X (v 1.0b): 64 bits at 133, 100 or
66 MHz
o PCI 3.0: 32 or 64 bits at 66, 50, 33 or
25 MHz
o 8-outstanding split transactions o Internal arbiter supports up to 4 external masters o 3.3V I/O o Message Signal Interrupt (MSI) support o Provides up to four PCI/PCI-X clocks o Scratchpad and doorbell registers Flexible, High-Performance Bridge in a Small Package The PLX Technology ExpressLane™ PEX 8114 is a high performance bridge that enables designers to migrate legacy PCI and PCI-X bus interfaces to the new advanced serial PCI Express™ interface. This flexible device supports forward and reverse transparent bridging. The bridge is equipped with a standard, but flexible PCI Express port that scales to x1, x2 or x4 lanes with a maximum of 1 Gigabyte per second of throughput per transmit and receive direction. With four 2.5 Gbps integrated SerDes, the standard PCI Express signaling delivers the highest bandwidth with the lowest possible pin count using LVDS technology. The ExpressLane PEX 8114 has a single parallel bus segment supporting the advanced PCI-X protocol, with a 64-bit wide parallel data path running at 133MHz. The bridge also supports conventional PCI operation. While both sides of the bridge are evenly matched, the device also supports internal queues with flow control features to optimize throughput and traffic flow. The small 17mm x 17mm footprint in standard Plastic BGA packaging makes the ExpressLane PEX 8114 ideal for a variety of applications where board real estate is at a premium. Leaded and lead-free ROHS versions are available. Forward and Reverse Bridging Compliant to the PCI Express-to-PCI/PCI-X Bridge Specification 1.0, the ExpressLane PEX 8114 is capable of operating in either forward or reverse bridging modes. In forward mode, the bridge allows legacy PCI or PCI-X chips and adapters to be used with new PCI Express processor systems. Reverse bridge operation allows conventional PCI or PCI-X processors and chipsets to configure and control advanced PCI Express switches and endpoints. The reverse bridge not only allows complete configuration of a downstream PCI Express system from the PCI/PCI-X bus, but it also handles limited PCI Express root functions for reverse interrupt and advanced error handling. High Performance PCI Express Interface The fully integrated PCI Express interface incorporates many of the advanced protocol features in PCI Express such as Automatic Lane Reversal, ECRC, Data Poisoning, Link State Power Management and Hot Plug. The single link scales from x4 to x2 or x1 operation through configuration or automatic link training. This enables the user to reduce power consumption by turning off unused lanes. PEX 8114 Version 5.0 2007
Development Kit (HDK) and the Software Development Kit (SDK). type) and a standard PCI Express slot on the secondary side. Application examples and Tutorials. Please visit the PLX Web site at http://www.plxtech.com or contact PLX sales at 408-774-9060 for sampling. responsibility for any errors that may appear in this material. PLX Technology, Inc. reserves the right, without notice, to make changes in product design or specification. Figure 8. PEX 8114 Forward RDK Figure 9. PEX 8114 Reverse RDK