UPDATE: I've measured the I2S signals under pause, stop and stream conditions (you might argue that I should have done this before and you would be right :) and it shows: Whenever the stream is paused or stopped, the port switches back to I2S mode - in other words: For a 2.8MHz DSD signal there is s...

yes - I've seen and read this post, but it is mostly about DOP, not native DSD - and it suggests using the UserAudioStreamStop() functions which I did and it did not help for the reasons beforementioned. Therefore the questions remain...

Hi there As stated in this thread (http://www.xcore.com/viewtopic.php?f=37&t=5145) we have implemented the USB-audio functionality on an XUF208 and have succeeded so far. Most everything is working, including DSD support. But whenever the DSD-stream stops there are nasty pops or clicks. I have t...

Hi We are making a USB audio product based on the usb audio framework... Our device can run on USB Power or with a battery attached. The thing I want to do is this: - Detect whether battery power is used with a GPIO on startup. - Depending on the GPIO-state report myself as a self-powered (or not se...

Hello - I just recovered from crouching on the floor banging my head on the chair... So I found out what caused such inexplicable phenomena... There is still some sort of USB communication problem and also some sort of foobar windows problem that I don't understand, but it comes down to this: SOMETI...

Power lines look good to me - also the NReset really is low before being drawn to 3.3V - that is with and without the capacitor... I attached the power converter schematics below. Coming from the left is the USB power supply.

Hi I checked the manual that says it needs NReset low for 1ms after VDDIO is stable. On our board we derive VDD (1.0V core) from VDDIO after VDDIO is stable. According to my osscilloscope, VDD needs approx. 2ms to stabilize. We use the VDD_good signal of the converter to set NReset - so this should ...

Hi thanks for the answer. The device is ALWAYS powering up and working well (except the native DSD stuff). In other words: Everytime I plug the device into the USB port I can perfectly use it as an USB audio device without hiss or click. Only the recognition of native DSD files is flawed. I checked ...

Hi we have a design based on the xMos Audio-HiRes-2-DAC-HPA reference platform - only we are using a flash xMos chip (XUF208-256-TG64-C10) instead. We ported one of the example projects in the USB-Audio reference code according to AN01027. Everything is working fine so far (USB Connection is working...

Hi While searching for a solution for a similar (or same) problem I stumbled over this thread. I am also only hearing noise when playing back DSD over our customized version of the xk_216_mc application - after having a look at the version numbers it turns out I also use the newer versions mentioned...