Differences between the Double Eurocard and VME

From: Thilo Schmidt <Thilo.Schmidt_at_unix-ag.org>
Date: Mon Aug 5 16:17:00 2002

Hi Ram,

please don't post html, it's a pain to read...

On 05-Aug-2002 Ram Meenakshisundaram wrote:
> <P><FONT SIZE=2>If it is just a mechanical difference, then why would
> transtech
> (who manufactured the TMB12 and TMB14/TMB16) say that the Double Eurocard is
> NOT the same as the VMEBus???</FONT></P>
>
> <P><FONT SIZE=2>Here is the snippet from their product description:</FONT>
> </P>
>
> <P><FONT SIZE=2>The TMB12 will fit into standard 6U, 220mm deep
> enclosures</FONT>
> <BR><FONT SIZE=2>with DIN41612 connectors. Please note that the TMB12
> is</FONT>
> <BR><FONT SIZE=2>not compatible with VMEbus backplanes (see TMB14 and</FONT>
> <BR><FONT SIZE=2>TMB15 for VMEbus interfaces).</FONT>

They don't say that "the Double Eurocard is NOT the same as the VMEBus"
they say that "the TMB12 is not compatible with VMEbus backplanes".
 
If you look at the Spec of the B12 and the B14 you will notice that
on the B14 the upper Edge Connector is used as the VMEbus Interface.
On the B12 it is used for Transputer Link-Connections.
I'm pretty sure that neither the VMEbus, nor the transputer-links be
very happy when they are connected to each other... ;-)

The lower edge Connectors on both boards use the Inmos-Interface, so
you can Connect the B12 and the B14 via some Inmos Backplane
(Inmos ITEM for example) and the B14 with some VMEbus System via the
upper edge connector.

btw. do you have some docs for the Parsytec BBK-PC2,
the MSC MB1T9S-PC-1 or HEMA TA1C. I'm currently writing new
Linux-drivers for transputer-link-interfaces and I would
like to support more boards than just the B004...

bye

        Thilo
  
Received on Mon Aug 05 2002 - 16:17:00 BST