PCI Express scalability from card edge connectors
16 June 2004
Interconnection
Supporting between one and 16 serial PCI Express Links, a family of 1,0 mm pitch vertical card edge connectors from FCI enables accurate scaling of peripheral bus interconnections to match the bandwidth requirements of desktop, server and heavy graphics applications.
The basic bandwidth (x1) edge connector has 36 pins and supports a single transmit/receive PCI Express link. A direct replacement for standard PCI connectors, it supports the link's fundamental serial data rate of 2,5 Gbps. PCI Express is able to further scale link transmission speeds by adding signal pairs to form multiple lanes.
With 64 and 98 pins respectively, the x4 and x8 connectors therefore cover all current server attach requirements and implementation of '10 Gb' storage, networking and clustering applications. Providing up to 16 PCI Express links, the 164-pin connector is the highest speed version and offers workstations twice the bandwidth of an AGP.
Each connector size is available in reflow/lead free and wave solder process versions and has a solder tail length suiting 2,36 mm motherboard thickness. For easy wave soldering, the connector's through-hole solder tails are offset to form four rows on a 2 mm pitch.
Further reading:
Designing with PCIe
Spectrum Concepts
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