Product category:
PC-Compatible Boards and Assemblies
News Release from: Dynamic Engineering | Subject: PMC-MC-X4/X2
Edited by the Electronicstalk Editorial
Team on 04 September 2006
Carrier handles up to four mezzanine
cards
The PMC-MC-X4/X2 adapter/carrier convertor card provides the ability to install up to four PMC cards into a small enclosure.
The PMC-MC-X4/X2 adapter/carrier convertor card provides the ability to install up to four PMC cards into a small enclosure The PMC-MC-X4 has two PMC card slots mounted front and rear to create a compact arrangement with four PMC slots, and is suitable for 32/64 with 33/66MHz bus operation
This article was originally published on Electronicstalk on 9 Sep 2004 at 8.00am (UK)
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The carrier provides power supplies for the +5, +3.3, +12 and -12V from a 12V wall mount transformer supply.
Arbitration is accomplished with a CPLD mounted to the card.
The CPLD also provides a selectable 66/33MHz reference clock to be routed to each of the slots.
The PCI VIO is programmable allowing 5 or 3.3V PMCs to be used.
The voltage select pins are not installed on the PMC-MC-X4.
Many PMCs are "universal" and can work with 3.3 or 5V cPCI backplanes.
A shunt is provided for the user to select 5 or 3V operation.
The PMC-MC-X4 follows the PMC specifications for maximum power consumption and heat dissipation (7.5V).
The power is routed from the power supplies to PMC connectors with mini-planes each of which is rated for more than the maximum PMC draw.
The total power dissipation is limited to the external power supply capabilities.
Each rail can draw to the maximum to cover situations where the power utilisation is not balanced.
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