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Altera_Forum's avatar
Altera_Forum
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16 years ago

SPI to I2S upgrade to 24 bit

Hi, I am currently working on a USB audio signal capture and playback device. I've noticed that all of the audio quality ADC/DACs use I2S to communicate but unfortunately my usb interfacing chi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I would primarly try to make the USB device communicate with the DAC/ADC directly. If this is threatened by format incompatibilities, a CPLD is a good solution and MAX II also my first choice for complex designs.

As another point, you may want to demand simultaneous AD and DA operation, as it's provided by most codec chips and separate ADC and DAC chips anyway.

What't your designated USB interface chip?