About audio codec with I2S in i.MX6

[keitanagashima]

Dear Sir or Madam,

Hello.

Let me clarify my understanding.

Now, we are trying to test the audio codec with TDM mode.

And, I consider that we should set the below setting in i.MX6's SSI.

1. Set the I2S network mode.

2. Set the SSIx_STCCR (DC4_DC0)  = 2 (set the using slots)

3. Set the SSIx_STMSK register = 0xfffffffc (to mask the sending slot)

But, the below description looked opposite it to above things.

Refer to 61.8.1.4 I2S Mode in MCIMX6DQRM(Rev.2) page 5112~5113.

I looked that the network mode doesn't use when one use the I2S slave mode,

[Question]

If I use the network mode, should I set the master mode in I2S.

Best Regards,

Keita

[igorpadykov · Accepted solution]

Hi Keita

SSI module uses different modes in I2S master and slave,

from IMX6DQRM  sect."61.8.1.4 I2S Mode":

In I2S master mode(SSI.SCR[6:5]=01), the following settings are internally overridden

by the hardware:

• Network mode is selected (SSI_SCR[3]=1)

..

In I2S slave mode(SSI_SCR[6:5]=10), the following settings are internally overridden by

the hardware:

• Normal mode is selected (SSI_SCR[3]=0)

Best regards

igor

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