Need help with the simple custom board

[AlexAdvice]

Hello All.

As I'm still total newbie,  I have a lot of questions.

I've made a small PCB, like USB Audio Reference Design, with small changes.

The software I use also from the Reference Design wih the minor changes.

Befor I will work with the final software, I want to be sure that my hardware is working, and with this I have a problem!

If I run this software on a Reference Design board - it works, but with my board - not. I cannot run it with XRUN, also XFLASH does not see the device (but maybe here I also doing something wrong?).

Can some of the experts to see my schematic (see attachment) - mayby something is wrong?

(do not pay attantion to R27,R27 values, theey are not correct at the schematics, but at PCB are OK).

Can also somebody from experts help with a small FAQ:

how is possible to check that the hardware is working, that XTAG is able to talck with CPU and with Flash Memory?

 

Thank you.

 

 

 

[sethu_jangala]

Make sure you follow the XMOS design checklist that is available in the data sheet of the device. You can find the device checklist from the following link:https://www.xmos.com/download/public/XS ... t%28X9681G%...