SD pin clarification help needed on T4.1 and micromod teensy

V

virtualdave

Well-known member
Hi,
I need some clarification on pins between the teensy 4.1 and the micromod teensy. We are in the process of converting one of our PCBs to the micromod and have run into some discrepancies on the pins for the SDIO pins for the microSD card reader.

On the teensy 4.1 card, the SD pins are labeled as 42-47. However on Sparkfun's website and KurtE's fantastic documentation, it shows the SD pins as 34-39, corresponding to pins 60,62,64,66,68,70 on the m2 connector.

Can anyone in the know shed some light on this?

Thank you in advance for the help!

Cheers,
David
 
SD pins on the different boards:
The Arduino Pin numbers for
T4 are 34-39
1741719039830.png

On the T4.1 They are pins 42-47
1741719102532.png

On the Micromod, has same Arduino pin numbers as T4
1741719164694.png


However if you are talking about which pin on the actual Micromod board, they are the other numbers you mentioned, which
is the 2nd column of the above picture. That is MicroMod defined some semi-standards for logically which connector pin should do what
functionality, such that you can potentially use different processor boards. More details in their document:

And it has a picture showing these functions, I sort of drew a quick and dirty arrow toward their SDIO standard pins
1741719588340.png
 
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