Hi all,
I try to understand how I can build a device similar to tascam analogue digital mixer. I found these parts that seems to do the trick.
I think that from the PCM4204 I have an output that could be routed into the xmos chip, and then connect the xmos to my pc via USB.
Automagically the DAW software recognise 4/8 audio lines as input for recording purpose. (xmos drivers seems to be already present into OS)
It's working in this way?
Someone have experience on this type of stuff and can help me?
Thank you.
PCM4204
https://www.ti.com/lit/ds/symlink/p...=https%3A%2F%2Fwww.ti.com%2Fproduct%2FPCM4204
XE216-512-TQ128-C20
XMOS - Bringing technology to life
I try to understand how I can build a device similar to tascam analogue digital mixer. I found these parts that seems to do the trick.
I think that from the PCM4204 I have an output that could be routed into the xmos chip, and then connect the xmos to my pc via USB.
Automagically the DAW software recognise 4/8 audio lines as input for recording purpose. (xmos drivers seems to be already present into OS)
It's working in this way?
Someone have experience on this type of stuff and can help me?
Thank you.
PCM4204
https://www.ti.com/lit/ds/symlink/p...=https%3A%2F%2Fwww.ti.com%2Fproduct%2FPCM4204
XE216-512-TQ128-C20
XMOS - Bringing technology to life
I don't know if it could be so complicated, because minidsp have already build a device to route without any drivers any digital audio to pc USB.
USB Audio Streaming: USBStreamer Kit
Could it be so difficult build a device like this?
USB Audio Streaming: USBStreamer Kit
Could it be so difficult build a device like this?
Take this: Cape4all: A multi-channel audio interface board for BeagleBone - Hardware bazaar - Hiveeyes add phofman's USB audio gadget drivers and you'll save yourself a lot of headache.
Well, async device -> host direction (capture) still needs some work. The current input endpoint is marked as ASYNC, but in fact works as adaptive, sending fixed number of samples every USB frame to the host. I have a patch implementing support for 'Playback Pitch 1000000' control element which is tested to work down to 1ppm precision, sending correct amount of data as requested. BUT this control element must be operated. For the opposite direction either the latest alsaloop or camilladsp support the new 'Capture Pitch 1000000' control. However, none of them support the other direction yet (my patch is not submitted yet and no other use case allows/requires tweaking playback rate). Modifying alsaloop should be simple though, the same principle as patch alsaloop: Support "Capture Pitch 1000000" rate shift * alsa-project/alsa-utils@ce05208 * GitHub
This just depicts that the task is not so simple as it may look upon the first view 🙂
This just depicts that the task is not so simple as it may look upon the first view 🙂
Not least the fact the XMOS chip you mention is out of stock everywhere in the world and will not be back till next year.
not that I would think you would be anywhere near finished by next year ... hehe
not that I would think you would be anywhere near finished by next year ... hehe
I didn't understand nothing of what you said but thanks anyway for your reply 😕
I found the XMOS chip in the Behringer audio card with the cirrus logic convertor.
Looking the datasheet/manual of xmos seems that the input of the xmos is a i2s bus.
So, this does mean that you have only to feed the xmos with the i2s output of a convertor and everything works? The xmos seems to have a firmware predone onboard.... I understood correctly?
thanks
XMOS has reference implementations but you have to adapt them based on the board. It might be very simple change but you still have to learn how to use their tools and compile the code.