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TMS320C6748: I2S and McBSP pin connection

Part Number: TMS320C6748

Dear Forum

Im using the DSP  model C6748 connect to a Audioi codec that have a I2S interface.

DSP will be the Master, Codec the Slave.

The  DSP have a McBSP, that is I2S capable.

Question is if the following connection are correct:

McBSP DR1      pin  to I2S SDOUT pin

McBSP DX1      pin  to I2S SDIN    pin

McBSP CLKX1 pin  to I2S BCLK (Bit CLK)   pin

McBSP FSX1   pin  to I2S LRC (Left Right CLK )   pin

And what about FRX1,CLKR1 and CLKS1 ? Can I use as GPIO or ??

Many Thanks for your time

Roberto