MCLK Usage for Analog Section

Still waiting for a reply on this. I anybody can help it would be much appreciated

I apologize for missing this thread and having a late response.

There are usually some analog-only paths that work without MCLK.  Let me set this up on my bench and verify that this is true, and I'll let you know which analog paths can be used without clocks.

I can confirm that the analog inputs (LINE or MIC) may be routed to the headphone, speaker, and receiver outputs without an MCLK present on the MAX98091.

All of the gain settings may also be adjusted without MCLK present.

Thank you Ed for the response. Much appreciated.

I am trying out a simple configuration. I have a stereo line in coming on INP 5 and INP 6

Trying to route it to Line Out L/R without any gain. Following are the register settings.

Not getting any output.  Checked and confirmed good signal level at input. Also  read back and verified register settings. Am I missing any settings ?

Hello, satish1959,

The registers that you provided match mine when setting up this signal path, but there must be something missing in your overall configuration.

Here are the contents from the control registers on my bench setup which is currently routing INP5 and INP6 to the line outputs without an MCLK present.  Please try these settings out and see if you can pass the analog signal through the MAX98091.  If it works, you can use this template to see which setting you are missing.

0x00 0x00
0x01 0x00
0x02 0x00
0x03 0x04
0x04 0x00
0x05 0x00
0x06 0x00
0x07 0x00
0x08 0x00
0x09 0x00
0x0A 0x00
0x0B 0x00
0x0C 0x00
0x0D 0x03
0x0E 0x1B
0x0F 0x00
0x10 0x14
0x11 0x14
0x12 0x00
0x13 0x00
0x14 0x00
0x15 0x08
0x16 0x10
0x17 0x03
0x18 0x03
0x19 0x00
0x1A 0x00
0x1B 0x00
0x1C 0x00
0x1D 0x00
0x1E 0x00
0x1F 0x00
0x20 0x00
0x21 0x00
0x22 0x00
0x23 0x00
0x24 0x00
0x25 0x00
0x26 0x88
0x27 0x00
0x28 0x00
0x29 0x00
0x2A 0x00
0x2B 0x00
0x2C 0x1A
0x2D 0x1A
0x2E 0x00
0x2F 0x00
0x30 0x00
0x31 0x2C
0x32 0x2C
0x33 0x00
0x34 0x00
0x35 0x00
0x36 0x00
0x37 0x04
0x38 0x00
0x39 0x15
0x3A 0x88
0x3B 0x00
0x3C 0x15
0x3D 0x00
0x3E 0x0C
0x3F 0x0C
0x40 0x00
0x41 0x00
0x42 0x00
0x43 0x00
0x44 0x06
0x45 0x80
0xBE 0x03
0xBF 0x03
0xC0 0x00
0xC1 0x1B
0xC2 0x10

I missed the device enable register 0x45

After setting this it works

Thanks a lot for the help

I'm glad I was able to assist you.  Good luck with your application!