Okay, looks like there is CS8416 SPDIF/TOSLINK receiver chip on the dac board, probably operating on Hardware Mode. Looks like the only signal that might help you know when to mute would be the _AUDIO signal on pin-15. It appears to change state when a valid audio signal is being received. Would have to check it with a scope to see if it toggles just before a pop occurs. If so, it might be useful for controlling an a mute circuit or relay at the analog output of the dac.
Other than that, in Software Mode one can look at the PLL status to see if its locked. If not, then you might want to mute. However, accessing that would require an MCU, maybe such as an Arduino, to see if that status bit could be used.
Other than that, in Software Mode one can look at the PLL status to see if its locked. If not, then you might want to mute. However, accessing that would require an MCU, maybe such as an Arduino, to see if that status bit could be used.
Dear Markw4,
Many thanks for your support. As I am not a technician, I needed some time to understand what you mean. If I understand correctly, you offered two different solutions.
First is to use pin 15 to switch a relay to use a board, which generates the needed signal and gives it to the dac output.
The second one with PLL I don’t understand, but I try to get support from a electronic versed person.
Is it correct that there are two different solutions?
I hope my English is acceptable.
Kind regards and thanks 🙏
Franz
Many thanks for your support. As I am not a technician, I needed some time to understand what you mean. If I understand correctly, you offered two different solutions.
First is to use pin 15 to switch a relay to use a board, which generates the needed signal and gives it to the dac output.
The second one with PLL I don’t understand, but I try to get support from a electronic versed person.
Is it correct that there are two different solutions?
I hope my English is acceptable.
Kind regards and thanks 🙏
Franz
Hi Franz
Don't know if they will turn out to be solutions or not, but they appear to be the only potential solutions to take a deeper look at. It would be necessary to do some measurements or some checking to see if they could work.
BR,
Mark