Dragonboard audio mezz


#1

Hi,
Does anyone know where I can get the board schematics of DRAGONBOARD AUDIO MEZZ
https://www.arrow.com/en/products/dragonboardaudiomezz/seeed-technology-limited

Thanks,
Mike


#2

You would need to contact Seeed Studios to see if they will release it.


#3

I have it if you need it. I could send you a link to the file if necessary.
Let me know.


#4

If the link to the schematic is public, it would be great if you could post it here :slight_smile:


#5

OK.
Try this for now.


#6

Thanks Jean-Marc. You beat me to it [I was just copying it into todays TODO list… and then I removed it again :wink: ]!


#7

Niiiice, the text in the PDF isn’t searchable. Heck, it isn’t even text.

Does anyone actually try to use this stuff before it gets out?


#9

Hi @bgat:

This version of the schematic and documentation isn’t too bad: http://static6.arrow.com/aropdfconversion/840e01f925d80cedd76b4ae507590f97ec8944ce/productspecification-audiomezzanineboard.pdf

The right hand edge of the schematic is cropped off, but the text is searchable. The only significant thing missing is the output capacitor on the 1.8V regulator. I have an older version of the schematic (I did the first revision), but Seeed Studio made some minor changes and they are not in my schematic and layout.

Full Disclosure: I am an employee of Qualcomm Canada, any opinions I may have expressed in this or any other post may not reflect the opinions of my employer.


#10

Does his can help for Win10 IoT Core enable Cortana? IoT looks like hardware hacking…


#11

You can enable Cortana with or without this board, and I think you’ll need to populate the 8x2 2.0mm header on the board in order to make the audio on this board work.

I do not know why that header was not populated at the factory, and using those connections is required to use audio, I believe.

The board itself, without those headers populated on the 410c is just a grove connector board.