beagleboard/beaglebone-black

Wrong connector number in SRM

Closed this issue · 5 comments

smortex commented

On page 85 of file BBB_SRM.pdf, Rev C.1, we can read:

  • “# Both of these signals connect to pin 41 of P11.”
  • “@ Both of these signals connect to pin 42 of P11.”

But there is no P11 connector. In fact, this is the section talking about P9 so P11 should be replaced by P9.

smortex commented

Same paragraphs, “by removing R221.” and “by removing R202.”.

There are no R202 / R221. As far as I understand, R221 should be R20, and R202 should be R51. But one may prefer to remove R20 and R50 depending on the application… maybe it makes sense to tell the user about the 3 possibilities (use one pin as input, the other one as output ; remove one of the resistors ; remove the other resistor).

jadonk commented

@smortex thanks!

Note that the latest SRM is now at https://github.com/beagleboard/beaglebone-black/wiki/System-Reference-Manual. I'm still working on the process of producing a suitable new .PDF file to replace BBB_SRM.pdf.

jadonk commented

Note I've duplicated and expanded upon some of this table data at https://github.com/beagleboard/capes

jadonk commented

OK, I think I've fixed it up enough.