Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 7 of 7

Thread: Is there a Scematic for T4.1? Missing SMD Part

  1. #1
    Junior Member
    Join Date
    Sep 2016
    Posts
    5

    Is there a Scematic for T4.1? Missing SMD Part

    Hello,

    I just wanted to try out the Ethernet on the new Teensy 4.1.
    Unfortunately I desoldered one of the SMD components and lost it. Is there a scematic available? Or can somebody tell me what I need to replace the missing part?
    It's probably a cap...


    Click image for larger version. 

Name:	Bildschirmfoto 2020-05-18 um 14.51.44.jpg 
Views:	9 
Size:	49.1 KB 
ID:	20178

    Also is there a backside available from the Pinout card?


    Thanks alot, cheers

    steffen
    Last edited by sennert; 05-18-2020 at 02:29 PM.

  2. #2
    Hi sennert.
    You can find the schematic in post #7 here.
    For the backside pinout you could check post #658 from here.

  3. #3
    Junior Member
    Join Date
    Sep 2016
    Posts
    5
    Amazing, Thank you very much!

  4. #4
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    23,012
    That part is a 2.2uF capacitor, specifically this one on the schematic.

    Click image for larger version. 

Name:	schematic41.png 
Views:	8 
Size:	21.8 KB 
ID:	20179

  5. #5
    Junior Member
    Join Date
    Sep 2016
    Posts
    5
    super! thank you very much, Paul.

    Connected the 6 Pins directly to a Magjack without any of the recommended/optional parts from your breakout and it's working
    (also without the 2.2uF Cap that I accidentally removed)

    To which Pin does the Cap on the Ethernet Breakout connect to (I mean the one that is not optional: Capacitor, 0.1uF, 805) ?

  6. #6
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    23,012
    That 0.1uF capacitor connects between the transformer center taps and GND.

  7. #7
    Junior Member
    Join Date
    Sep 2016
    Posts
    5
    thank you!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •