uob-hep-cad / uob-hep-pc072

DUNE MIB
CERN Open Hardware Licence Version 2 - Strongly Reciprocal
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Schematic fixes 2 #10

Closed DavidCussans closed 1 year ago

DavidCussans commented 1 year ago
  1. Done: SFP0_CLKGEN_P & N duplicated at U6, one needs renaming to SFP2...
  2. Done - CLKIN signals at P6 need renaming as diff pairs.

Hmm... exported to mib_rev2_v116.brd . CLKIN0P etc. still member of XNet, so don't seem to be able to define as part of a DPr using the Allegro "Logic --> Assign Differential Pairs" dialogue Looking to see if XNets can be deleted. It seems not (easily). So managed to create a DPr out of an XNet, which works for CLKIN<0..3>. However, there are other signals that should be DPrs where XNet members aren't the +/- halves of the pair. Will give up for now and fix the other issues.

  1. Done - AMC_N_ENABLE is not connected to anything external to control it. Connect to backplane J7, pin 41 through a 0R link.

  2. Done - C192 is attached to unnamed net because there is a break in the line on the schematic

  3. C179 ditto

  4. C44 is not actually connected to GND even though it looks like it.

Argh! Big value tant caps not easy to get hold of it seems.... Looking for replacement for C52

Going to replace 470uF with two 220uF. Can increase voltage rating to 25V

  1. Done - C52 is insufficient voltage rating C25 ditto. Replaced single 470uF cap with two 220uF/25V caps. Need to edit PADPATH to allow Allegro on Windows to load the new footprint (for the 220uF cap).

 

[15:34] Magnus Loutit

Tidy. so will you merge that to main and I will checkout a pcb edits 3 branch?