components in fmc region3

Components in fmc region3. Cannot insert conduction cooled FMC boards into slot HPC 2

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• IMG_20171211_160148891.jpg

Is this related to AFCv3.1 and FINs?

This is related rather to JTAG headers

For v4.0 we're planning to remove CON1 (due to #4 (closed)) and DNP JP1 as default use-case scenario would assume using JP2 for MMC programming and debugging.

JTAG connector is not technically violating FMC Rule 3.18, however, it won't be usable with FMC extending to region 3. Unfortunatly, it seems there is no better place for this connector.

changed milestone to %AFC v4.0

assigned to @msowinski

assigned to @tprzywoz and unassigned @msowinski

Here we had 3 connectors:

1. CON1 which we removed because of removing atmega.
2. J6 "SYSTEM" JTAG - we want to keep here that connector. It takes up a lot of space on PCB so changing its position would cause a chain reaction of moving the rest of the components. It can be easily used with single FMC and RTM. In the case of double FMC, it is now a possibility to use USB JTAG.
3. JP1 MMC JTAG - Here we have a question. We would like to change that connector to pitch 1.27mm, which we use in our other projects. In addition, it would be easier to move it to another place where would be no mechanical conflict with the FMC. Would that be a problem for you?

@henrique.silva @danielot Can you give your opinion on 1.27mm pitch in JP1?

mentioned in issue #114 (closed)

Discussion moved to #114 (closed).

closed