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Problems writing PCM5142evm with i2s master

Other Parts Discussed in Thread: PCM5242

Hi All

I want PCM5142evm to work in i2s master mode.

I set GPIO3 as input ( i am providing 20 MHz clock externally) , set PLL clk source select as GPIO , set GPIO src for PLL reference as GPIO3 and set GPIO6

as output.

I enable PLL ,set the register dividers for 90.316 MHz output and set GPIO6 output selection as 10000b (PLL/4).

Now i should see some clock at GPIO6.

I  get some random sine wave. Please suggest what I am doing wrong?

I will pass this signal at SCK and then program BCK and LRCK using dividers.

Thanks and Regards

Ankur