I'm looking to pass isochronous USB audio to/from Linux ALSA kernel code and the SHARC+ cores in an SC589. Is there a recommended, or already implemented, scheme to accomplish this in a nice low latency manner?
There is an experimental ALSA driver allowing the transport of audio data between the SHARCs and Linux running on the ARM core available for SC594. Yocto Linux Quickstart Guide for ADSP-SC594 [Analog Devices Wiki]
This driver will be ported to SC589 in early 2022.