IEEE Std 1386.1-2001 IEEE Standard Physical and Environmental Layers for PCI Mezzanine Cards (PMC) Sponsor Microprocessor and Microcomputer Standards Committee (MMSC) of the IEEE Computer Society Approved 14 June 2001 IEEE-SA Standards Board Abstract: This standard, in conjunction with IEEE Std 1386-2001, IEEE Standard for a Common Mezzanine Card (CMC) Family, defines the physical and environmental layers of a PCI mezzanine card (PMC) family to be usable on (but not limited to) single slot VME, VME64 and VME64x boards, CompactPCI boards, Multibus I and Multibus II boards, desktop computers, portable computers, servers, and similar types of applications. The electrical and logical layers are based on the PCI specification from the PCI Special Interest Group. The PCI mezzanine cards allow for a variety of optional function expansions for the host system. lío functionality from the PMC may be either through the mezzanine front panel, or via the backplane by routing the lío signals through the mezzanine connector to the host. Keywords: backplane lío, bezel, board, card, CompactPCI, face plate, front panel lío, metric, host computer, lío, local bus, mezzanine, module, modular lío, PCI, Multibus I, Multibus Il, VME, VME64, VME64x, VMEbus