I wonder if Analog Devices provides an USB to I2S audio bridge? Either as one component or as a combination. It should handle USB 2, PCM 352/384 32 bit and DSD128 to PCM 176. On the other end there is a DSP (ADAU1467) running at 192/32. Audio direction is only from USB host to DSP. Since the DSP is running at 192, the bridge must be able to perform the sample rate conversion of the PCM stream down to 176/192.
I have done some searching and as far as I can see I will need to source the USB interface from other supplier but eventually there is some Analog Device solution that will be able to take care of the down sampling to match the sample rate of the DSP. Am I correct?
We are currently developing a new interface that will include of the functionality of (and improve on) the USBi, but it will also include bit-accurate, multi-channel audio I/O. It will be released this summer.
Please see my PM for additional options for solutions.
Sounds great, any preliminary documentation for the updated USB interface?
No docs yet.
These specs are preliminary and subject to change, but::
this USB interface sounds very interesting to me and I would like to ask you if you can give me a quick update and maybe share documentation if available in the meantime?
Any further info on specs and availability of this?