Hi
I am designing a small audio DSP system with 4 input and 4 output channels using a PCM5310. For space and power consumption reasons, I have chosen a DSP with only one I2S interface.
As I understand so far, the PCM5310 needs one I2S interface for each pair of input or output channels, resulting in four I2S interfaces to make use of all 8 channels.
My questions are now:
- Does the PCM5310 support duplex, i.e. one interface can handle an input and an output stream at the same time? This isn't clearly explained in the user's manual, but it would result in only two I2S interfaces being used.
- Do the output pins of the I2S interfaces support tri-state? With LJ and RJ on one interface each, this would result in Time Division Multiplexing (TDM) and I could directly connect the two interfaces to only one I2S interface on my DSP. However, tri-state isn't mentionned in the user's manual. Without tri-state, such a solution would need additional multiplexing hardware.
Thanks for your support!
--SG
