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Type: Posts; User: PaulStoffregen

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    Yes, you're right. Thanks for noticing! I've...

    Yes, you're right. Thanks for noticing! I've updated the schematic.

    Also fixed the pins for the USB1 signals, which were off by 1 row.
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    In this case, I upgraded from the usual post-it...

    In this case, I upgraded from the usual post-it notes to a full letter-size sheet of paper with notes about each BGA pin. Even used Robin's collection of many different colored highlighter pens. ...
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    Nope, not really. This new chip has several...

    Nope, not really. This new chip has several complex features which required extra pins. That's all.
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    Indeed, N12 (USB_OTG1_CHD_B) is floating. That...

    Indeed, N12 (USB_OTG1_CHD_B) is floating. That open drain output pin would normally be used to integrate the USB charger detection to an external power management chip, presumably so it could know...
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    Added minor fixes to the schematic, for the...

    Added minor fixes to the schematic, for the Program pin and 3.3V & GND (right side of the board between On/Off & VTAB). Also added 10 of the 11 test points which were overlooked earlier.
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    Reverse polarity protection

    Reverse polarity protection
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    Opps, a typo indeed. Here's the completed...

    Opps, a typo indeed.

    Here's the completed schematic.

    https://www.pjrc.com/teensy/schematic40.png

    Also on the schematics page:

    https://www.pjrc.com/teensy/schematic.html
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    I'm drawing the schematic now. It's going to...

    I'm drawing the schematic now. It's going to take a while...

    But here's the GPIO part. Hopefully no big surprises?

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