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I2S questions & review?

Question asked by Lasse Madsen on Apr 1, 2012
Latest reply on Jul 23, 2015 by Negar Erfanian
Hi, I'm trying to interconnect a MAXIM codec together with the K40 mcu. I'm a bit in doubt about the connections and was hoping you could help me out in my first steps with the K40 The codec has shared BCLK and LRCLK for the RX and TX line but on the K40 they are seperated interfaces - how do i make that work?? The codec wants 12.288MHz clock input to achieve maximum performance but if I attach a 12.288MHz to the crystal port on the K40 in order for it's I2S pheripheral to output that as a MCLK it seems that I cannot use the USB pheripheral as that requires a 4MHz clock ?? Thanks !