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i.MX6QD SABRE rev C5 reference design schematics out of sync with PCB

Question asked by Andrew Hall on May 25, 2016
Latest reply on May 30, 2016 by Artur Petukhov


Hello,

 

I hope I'm asking at the right place.

 

I downloaded the rev C5 of the SABRE reference design from SABRE Board Reference Design|NXP  and am finding some problems.

 

The download gave me OrCAD schematics SCH-27516_C5.DSN and Allegro PCB file LAY-27392_C.brd, these are from Feb 2015.

 

But the Rev C5 schematics has changed component footprint for U512, from BGA169_0P5_12X16 to FBGA153_0P5_11P5X13, which have different pinouts. I was only expecting BOM level changes.

 

Also there's a connectivity breakage in the schematics at Q6. It looks like something got placed off-grid, the OVPROT_5V net no longer connects to Q6 pin 5, although it does in the .brd.

 

My PCB layout guy says that he did a design based on schematics rev C3 a while back, and that was in sync with the rev C board.

 

So, it looks like the C5 schematics shouldn't have been released?

 

Also, can I get a definitive Freescale copy of C3 OrCAD schematics, or C4 if it still matches the PCB?

 

Thanks so much!

 

Andy

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