I want to build a simple USB sound interface with S-PDIF output. I'm not planning to use an external memory, as I'm content to use the internal USB descriptors. I don't need to use any SPI interface either, neither HID buttons. So, which interface should I be using, PCM2704 or PCM2705? I know I can use both, but which one is simpler to use and requires less terminations/components?
Kind regards, Samuel Lourenço