Farhan Mohamed Ali wrote:
Timothy Normand Miller wrote:
We obviously have enough signal lines to support the gumstix 60-pin
connector. Unfortunately, there are more interesting devices that
require the 92-pin connector.
So, first, how many of those 92 are actually digital signals (as
opposed to power and ground)? If we cannot support them all, how many
can we sacrifice and still remain reasonably compliant? Like, can we
sacrifice some address lines? Now, with those sacrificed, what do we
need to do with them? Allowing them to float is likely to be very
bad, so we need to know if we have to tie them to 0 or 1.
Schematics of expansions boards are available here:
http://pubs.gumstix.org/boards/
For instance, the NETMMC board doesn't use all pins on the 92-pin connector:
http://pubs.gumstix.org/boards/NETMMC/PCB00018-R918/PCB00018.H92.png
It looks like there's an Eagle library for the connector (possibly
giving the placement of mounting holes?):
http://svn.gumstix.com/gumstix-hardware/Eagle/lbr/
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