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Mezzanine boards are small form factor cards designed to plug onto larger form factor boards. The larger main boards can be designed to support one or more Mezzanine boards. Not all mezzanine formats are supported by the main boards.
CMC: Common Mezzanine Card. IEEE 1386 Standard Mechanics for a
Common Mezzanine Card Family.
Defines the mechanical specification for the IEEE 1386 series of
Mezzanine Cards. The card size is 74mm x 149mm x 8.2mm (single width) or
149mm x 149mm x 8.3mm (double width). IEEE1386 uses Board-to-Board 1.00mm
(.039") Dual Row connectors. Mezzanine cards, designed to this standard,
can be used interchangeably on VME, VME64 and VME64x boards, CompactPCI,
Multibus I, and Multibus II boards. Additional standards define the board
pinout to backplane pin outs.
PC MIP: [VITA 29]. Uses the PCI bus specification in a new [board dimension] form factor. The PCI bus speed must be 33MHz or greater, with a maximum bus width of 33 bits, and only uses the 3.3 volt power supply version of PCI. The PC MIP board uses three connectors and two different board sizes. Single width boards are; 47.50mm x 90.50mm [Type I], or 47.5mm x 99.5mm [Type II]. Double width [dimensions] boards are; 95.00mm x 90.50mm, or 95.00mm x 99.50mm. Up to six single width cards will fit onto a standard 6U VME card. This form factor uses a front panel. The PC MIP may also be used on desktop PCI boards as well.
Processor PMC: for Processor PCI Mezzanine Cards; VITA 32
The Processor PMC standard provides extensions to the PMC standard [PCI
Mezzanine Card] to support CPU based cards. The signaling protocols
remains the same between the PMC board and Processor PMC boards. The
mechanical format follows the Common Mezzanine Card [CMC] specification
[IEEE1386]. However the Processor PMC standards may include changes to
the physical and or signaling formats. The Processor PMC board formats
follow the size of PMC boards. Two board heights are allowed; 10mm and
20mm high boards. There are several pin functions which change in the
Processor PMC specification. The primary purpose of the Processor PMC
interface was to enhance the I/O bound functionality of the PMC daughter
boards to allow higher order processor functions to be provided. The PCB
requires a Bezel to support the front panel opening.
Refer to the PMC Description and Pinout Table
Refer here for the IP Mezzanine Bus Description.
The description and pinout are listed on the M-Module page.
The EMC listing has now moved a new page.
The description has moved to AMC Board Description
Uses PCIe as the interface.
Engineering Key words: Mezzanine Bus, IndustryPack, IP, PCI Mezzanine Card, AMC, PMC, PC MIP, Common Mezzanine Card, CMC Bus, Standard, Interface Standard, Specification, Spec, Electrical Interface, IC, Parallel Bus, Physical Interface, Embedded Parallel Computer Bus, Electronic connector Description, Daughter Card Component Manufacturers, Card Dimensions, Board form factor, PCB width, Mezzanine, IEEE Standards: IEEE 1386 and IEEE 1386.1, I/O schemes, Module, Carrier.
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