XMOS XU208 I²S to DAC

[Mayday]

Hi,
I've got an XMOS-based USB to I²S board with less than clear information on how to connect via I²S to DAC IC.
The DAC wants:
MCLK
SCLK
LRCLK
DATA
GND

I can't find anything labeled LRCLK on the XMOS board.
Then there's a few pins I have no idea what they are.
They're labeled: F0, F1, F2 and F3.

Edit: added pictures.

 

[abraxalito]

I believe that 'FSCLK' is the LRCLK in this instance.

 

[JensH]

Abraxalito beat me to it🙂
I agree the the LRCLK is probably the one called FSCLK on the PCB. One guess could be that it is an abbeviation of Frame Sync Clock. Basically the same as LRCK if the interface is an I2S interface.

My guess is that F0 to F3 indicate the sample frequency. There seems to be 4 LED's indicating F0, F1, F2 and DSD. These probably indicate the sample rate as well as PCM or DSD. F0 to F3 could be the same, just as logic level signals instead of visual indications.

 

[Mayday]

Thank you gentlemen 🙂
I have traced connections, read the datasheet, searched the web and not gotten any wiser, until now 🙂

Edit:
Am I right in guessing the connections goes like this:
FSCLK - LRCLK
BCLK - SCLK
DATA - DATA
MCLK - MCLK

Or is that wrong?

 

[JensH]

That is correct.