FMC Mezzanine

fmcFPGA Mezzanine Card (FMC) is an ANSI/VITA standard that defines I/O mezzanine modules with connection to an FPGA or other device with re-configurable I/O capability.[1][2] It specifies a low profile connector and compact board size for compatibility with several industry standard slot card, blade, low profile motherboard, and mezzanine form factors.

The FMC specification defines:

I/O mezzanine modules, which connect to carrier cards

  • A high-speed connector family of connectors for I/O mezzanine modules
  • Supporting up to 10 Gbit/s transmission with adaptively equalized I/O
  • Supporting single ended and differential signaling up to 2 Gbit/s
  • Numerous I/O available

The electrical connectivity of the I/O mezzanine module high-speed connector

  • Supporting a wide range of signaling standards
  • System configurable I/O functionality
  • FPGA intimacy

The mechanical properties of the I/O mezzanine module

  • Minimal size
  • Scalable from low end to high performance applications
  • Conduction and ruggedized support

The FMC specification has two defined sizes: single width (69 mm) and double width (139 mm). The depth of both is 76.5 mm. The FMC mezzanine module uses a high-pin count 400 pin high-speed array connector. A mechanically compatible low pin count connector with 160 pins can also be used with any of the form factors in the standard.