About the length of I2S output of PI3...

[andre_chang]

Hi
I found that the 44.1K 48K DATA data length is 16 bits. Can it be restored to the standard 32 bit length (plus 16 empty bits)?

Thank you
Andre

[janui]

Hi andre_chang,

Yes. But not quite sure what you are trying to do.

Tell us: the type of Pi and image you are using, your DAC/audio card model and what you want to do.

Posting your debug also helps us to answer your questions.

janui

[hondagx35]

[andre_chang]

hi janui & frank:

Question 1:
I want to make a Pi2 or PI3 I2S adapter to output SPDIF signals. But...

After installing the rune system on pi2, I found out that when Rune played a 16 bit file, the length of the data frame was only 16 bits, and when it played 24 bits, it was 32 bits.
But on a volumio or moode system, the data length is 32bit...

Because SPDIF synthesis chip (such as WM8805) only supports 32bit data length.

When Rune plays 16bit music, can the length of data BCK data of I2S output 32bit?

How can I set the length of Rune if 32bit can be output?

Question two:
Can the run output SRC lock 44.1 Khz, or can the SPDIF always output 44.1 kHz regardless of the playback rate of 44.1 kHz to 384 khz?
If so, what should I do?

Rune beautiful voice surpasses other systems! I like it!

Andre

[R101]

andre_chang,

I think the slot length will be decided by the driver. You might find it easier to use a USB to s/pdif interface, or a s/pdif HAT with its own driver.

[janui]

[andre_chang]

Hi janui:

We can set up HiFiBerry DAC in CONFIG.TXT.
The conversion chip will use WM8805 to output SPDIF signal ~

Do you have steps to install SOXr plug-ins and enable them?

Thank you!

andre

[janui]

[andre_chang]

hi janui:

[janui]