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Piccolo controlSTICK Resistor R9 schematic vs. BOM

BillyO
Genius 17555 points

Other Parts Discussed in Thread: CONTROLSUITE

Hi Team,

 

Digikey has a customer issue, and returned a board due to our Piccolo controlSTICK schematic and BOM not matching for resistor R9. (I personally don’t know which rev they have, R2 or R4) but I am thoroughly confused now after comparing our own control suite documentation.

 

As concise as I can:

 

On Rev R2:

BOM:        47K

Schematic:  20K

 

On Rev R4:

BOM:          2.2K

Schematic:   3.3K

 

Please help me to try and straighten this out.

 

Thanks,

Billy

 

  • 0
    TI__Genius 17555 points

    Hi Team,

     

    I really need a response on this, and hopefully get it cleared up. Both distributor and customer are waiting on this. While searching initially, I was surprised to see this wasn’t brought up previously. None of these match?

     

    Thanks,

    Billy

  • 0 in reply to BillyO
    TI__Guru 57255 points

    Billy,

    Sorry about the confusion, it's pretty surprising that none of these R9 values match up. 

    Part of the issue is that R9 doesn't need to be very specific, just within a range near the value specified.  In general, the C2000 group builds off of what is put in the BOM, so this is what the customer should have received and is what TI meant to do.

    Between [R2] and [R4], R9 changed quite substantially.  This was to change the default boot mode from FLASH to SCI.
    R9 = 20K - NoPop; boot to FLASH
    R9 = 1K - 3.3K; boot to SCI

    Sorry again for the mix-up, I've flagged this documentation to get updated next time controlSUITE gets updated.


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    TI__Genius 17555 points

    Thanks a lot Brett. That makes total sense now. Hopefully it can get inline for a fix soon, so they match up.

     

    Thanks!

    Billy