beautypg.com

Pmc standard, Voltage keying, Connectors – Sundance SMT498 User Manual

Page 20: Component heights, Board weight, Standoffs, Bezel and i/o capability, Power consumption

background image




PMC Standard

Voltage keying

The QuickLogic 5064 bridge is both 3.3V and 5V compliant. Both keying holes are
provided.

Connectors

According to IEEE 1386.1-2001 connectors Pn1 through Pn3 are provided for 64-bit
PCI connectivity. Additionally, connector Pn4 is provided for 64 bits of user-defined
I/O. Given that SMT498 is a single-size card, these connectors are referenced from
P11 through P14.

Component heights

This module obeys the PrPMC Tall module specs for component heights. Heights of
components on PMC Side 1 (see Figure 10) are limited to 4.7mm except in the I/O
Area (where they may extend to the host module surface). Components on PMC
Side 2 (see Figure 10) are limited to 23.5mm minus PCB thickness, or about
22.0mm (assuming 1.5mm PCB thickness).

Board Weight

The SMT498 weighs approximately 85 grams

Standoffs

There are two standoffs as part of the module. The standoffs are of standard 10mm
height in order to support the broadest range of host modules.

Bezel and I/O capability

Access to the right-angle FPDP port is provided through the front panel. For
purposes of mechanical rigidity and EMC compliance a customised bezel is provided
through which the FPDP is accessed.

Power consumption

Due to the close packing of components between PMC Side 1 and the host module,
power consumption is limited to 4.0W for 10.0mm standoffs (this increases to 6.0W
for 13.0mm standoffs). For Tall PrPMC modules an additional cooling method such
as a heat sink and fan should be considered if the total module power exceeds 25W.

Page 20