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putnokiabel
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Last seen: 5 months 4 weeks ago
Joined: 2018-10-25 12:12
DA7217 Playback

Hi Support Team,

I have the DA7217 Evaluation kit, and I have the following problem:
First, I set up the codec and the audio paths via I2C. Then, I repeatedly play a tone via I2S.
The first few times I play the tone via I2S, it works as expected. However, after playing the tone multiple times, the codec also plays another tone with a high frequency and increasing volume.
After multiple playing a few more times, the high frequency tone gets way too loud. Also, at this point the codec starts using more current (0.03A instead of 0.01A), even when I am not playing anything.

My setup:
IO voltage: 3.0V
PLL: bypass mode, MCLK is only applied when something is transmitted via I2S.

I2C settings (registers from 0 to 255):
[0x1, 0x0, 0x0, 0x0, 0x23, 0x39, 0x4, 0x0, 0x0, 0x0, 0x0, 0xaa, 0x2, 0x0, 0xf, 0x35, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0x80, 0x0, 0x0, 0x80, 0x77, 0x77, 0x7, 0x40, 0x0, 0x0, 0x0, 0x48, 0x3, 0x48, 0x3, 0x0, 0x0, 0x0, 0x3f, 0x3f, 0x0, 0xff, 0x71, 0x0, 0x0, 0x0, 0x0, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x24, 0x0, 0x50, 0xa3, 0x31, 0x11, 0x1, 0x74, 0x1, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x4, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x20, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x40, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x4, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x8, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x90, 0x40, 0x0, 0x0, 0x1, 0x14, 0xb, 0x60, 0x4, 0x0, 0x0, 0x0, 0x12, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x55, 0x15, 0x0, 0x40, 0x0, 0x2, 0x1, 0xb7, 0x4d, 0x0, 0xf0, 0x11, 0xe, 0x0, 0x0, 0x80, 0xf, 0x0, 0x40, 0x1, 0x0, 0x0, 0x40, 0x1, 0x0, 0x0, 0x80, 0x80, 0x0, 0x0, 0x7, 0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x0, 0x0, 0x80, 0x3, 0x80, 0x3, 0xa8, 0x3b, 0xa8, 0x3b, 0x0, 0x1, 0x44, 0x0, 0xb, 0x0, 0x0, 0x0, 0x8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x1c, 0x0, 0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6f, 0x6f, 0x6f, 0x6f, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]

How can I fix this?

Another question:
In the example scripts that came with the evaluation board, in DAC to HP.txt I see the following lines:
WRITE DA7217 0xCC 0x01 //MIXOUT_L Enable
WRITE DA7217 0xCE 0x01 //MIXOUT_R Enable
However, the datasheet says that these bits are reserved. Is this a mistake in the example script, or in the datasheet?

Regards,
Abel

Device: 
bmcadam
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Last seen: 1 month 3 days ago
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Joined: 2015-09-16 16:25
Hello,

Hello,

Appears to be issues with the supplying clocks if you are getting other harmonis and increased supply current.

Picking up on your comment regarding "MCLK is only applied when something is transmitted via I2S ", just ensure you give some time before transmitting again.

What MCLK and WLCK are you using ?

The below bits can be used :-

WRITE DA7217 0xCC 0x01 //MIXOUT_L Enable
WRITE DA7217 0xCE 0x01 //MIXOUT_R Enable

putnokiabel
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Last seen: 5 months 4 weeks ago
Joined: 2018-10-25 12:12
Hello,

Hello,

My MCLK is 11.2MHz. There are 8 MCLKs for each BCLK, and there are 32 BCLKs for each WCLK (16x BCLK when WCLK is on, 16x when WCLK off).

Regards,
Abel