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mschramm

  • Registered on: 03/11/2016
  • Last connection: 10/01/2019

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09/28/2019

12:10 AM m.2 (NGFF) WWAN modem USB breakout board Bug #4216 (New): connect PCIe conn pin 7 on NGFF to GND
NGFF/M.2 breakout v1 lacks a proper GND connection towards PCIe apart from shield. @roh today identified pin 7 for th...

09/24/2019

04:35 PM m.2 (NGFF) WWAN modem USB breakout board Bug #4211 (Resolved): find solution for inverted polarity of SIMx_DET (SIM present) switches and their altered pin designation on some modems for 2nd SIM
The current design now incorporates an additional 2x5 header for the USIM2 signals, serving as a breakout header for ...
04:22 PM m.2 (NGFF) WWAN modem USB breakout board Bug #4186 (Resolved): lack of GND VIAS in some area of board
current version got a lot more vias.
02:59 PM m.2 (NGFF) WWAN modem USB breakout board Bug #4186 (In Progress): lack of GND VIAS in some area of board

09/19/2019

06:48 PM m.2 (NGFF) WWAN modem USB breakout board Wiki edit: Wiki (#2)
add image of 1st working v1 M.2 / NGFF breakout
05:22 PM m.2 (NGFF) WWAN modem USB breakout board Feature #4210 (Resolved): PCIe conn could be moved inwards by 3mm

09/18/2019

07:24 PM m.2 (NGFF) WWAN modem USB breakout board Bug #4211: find solution for inverted polarity of SIMx_DET (SIM present) switches and their altered pin designation on some modems for 2nd SIM
laforge wrote:
> That inversion could be resolved by connecting the switch to some positive voltage rail (1.8V?)
...
06:42 PM m.2 (NGFF) WWAN modem USB breakout board Bug #4185 (Resolved): one stray ground fill between signals from JP1 to NGFF1
removed in current design
05:30 PM m.2 (NGFF) WWAN modem USB breakout board Feature #4210 (In Progress): PCIe conn could be moved inwards by 3mm
04:51 PM m.2 (NGFF) WWAN modem USB breakout board Bug #4211 (In Progress): find solution for inverted polarity of SIMx_DET (SIM present) switches and their altered pin designation on some modems for 2nd SIM

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