PINE64
Audio Pot Board Questions - Printable Version

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Audio Pot Board Questions - vfr400racer - 04-17-2022

I couldn't find out, what this big white 6 pin socket on the board is used for. Someone has a clue?
The other question is: there is this jellow jumper which selects the clock signal. In the schematics drawing one can see, that pin 1 selects the board's clock. Now I wonder which pin is pin 1.
regards,
Hans-Peter


RE: Audio Pot Board Questions - t4_4t - 04-17-2022

> ... white 6 pin socket ...
It simply pulls out the signal as shown in the schematic.
Probably, it seems to be a terminal assuming the case of connecting another I2S-device (DAC etc...) to the outside.

> ... which pin is pin 1.
Look at the back of the board, there is a (50M / MCLK) silk mark.
The part where 50M is printed is pin 1.

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However, even if you select the MCLK side, it will not work properly in many cases.
This is because many kernels are not set to output MCLK to the outside.
You can find such a post by searching the forum thread here.


RE: Audio Pot Board Questions - vfr400racer - 04-18-2022

(04-17-2022, 06:54 PM)t4_4t Wrote: > ... white 6 pin socket ...
It simply pulls out the signal as shown in the schematic.
Probably, it seems to be a terminal assuming the case of connecting another I2S-device (DAC etc...) to the outside.

> ... which pin is pin 1.
Look at the back of the board, there is a (50M / MCLK) silk mark.
The part where 50M is printed is pin 1.

---

However, even if you select the MCLK side, it will not work properly in many cases.
This is because many kernels are not set to output MCLK to the outside.
You can find such a post by searching the forum thread here.

Many thanks, now it's clear to me.Currently, I'm running a volumio image on the rock64 and it let's me select the 50M side. Which is fine for me Big Grin .