24.576 sort of works with 48, 96, 192. However the DAC still need to change or have its settings switched for each sample rate. Normally the master clock is 128X the bit clock, except. . . (insert micro and software here). . .
I had another fiddle around with the ST and have figured out that I'd need to cut traces to 5 of the PCI pins to remove the 3.3Volt supply from the PCI bus. I'd then be able to supply the card with a separate 3.3v feed.
This isn't an entirely desirable thing to be doing, but if done correctly should be reverseable.
I'm in the process of designing a small PCB that will plug into the header, this will buffer the various clocks and output them in a convenient way, ready to be input into whatever DAC I choose.
What I was thinking of doing, was adding a suitable regulator to this board. It would be powered off of the 12volt feed the header provides and then would feed a clean 3.3v back into the board.
This should keep everything fairly well contained. I'd much prefer keeping the card operational all by itself + a small PCB that's plugged into it. Rather then having to have a separate transformer + wires all over the place😉
This isn't an entirely desirable thing to be doing, but if done correctly should be reverseable.
I'm in the process of designing a small PCB that will plug into the header, this will buffer the various clocks and output them in a convenient way, ready to be input into whatever DAC I choose.
What I was thinking of doing, was adding a suitable regulator to this board. It would be powered off of the 12volt feed the header provides and then would feed a clean 3.3v back into the board.
This should keep everything fairly well contained. I'd much prefer keeping the card operational all by itself + a small PCB that's plugged into it. Rather then having to have a separate transformer + wires all over the place😉
"This should keep everything fairly well contained. I'd much prefer keeping the card operational all by itself + a small PCB that's plugged into it. Rather then having to have a separate transformer + wires all over the place"
This is why I am working with the Juli@ card. 1) The clocks are accessible, 2) I2S is on a connector meant to connect to the analog section.
The 3.3V supply may be manageable by using a riser card and chopping the 3.3 volt on the riser. If its totally screwed up the sound card is still intact.
This is why I am working with the Juli@ card. 1) The clocks are accessible, 2) I2S is on a connector meant to connect to the analog section.
The 3.3V supply may be manageable by using a riser card and chopping the 3.3 volt on the riser. If its totally screwed up the sound card is still intact.
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