Ohoj!
How can I get 2 toslink (opto) output on one RPi?
Can one RPi house 2 hats? Like 2 HifBerry Digi+ ?
My aim would to run latest Volumio with the now contined Camilla DSP to control 2 DACs (i.e. 4 channels).
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How can I get 2 toslink (opto) output on one RPi?
Can one RPi house 2 hats? Like 2 HifBerry Digi+ ?
My aim would to run latest Volumio with the now contined Camilla DSP to control 2 DACs (i.e. 4 channels).
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Do you want 4 individual channels, or 2 copies of a stereo signal?
The first one isn't possible with hats since the i2s output of the pi only handles stereo. The second might be possible, but it's likely easier to make some y-split of the spdif signal from a single output.
The first one isn't possible with hats since the i2s output of the pi only handles stereo. The second might be possible, but it's likely easier to make some y-split of the spdif signal from a single output.
While RPi has only one stereo I2S peripheral, e.g. RK3128/3328 offer 4 I2S data outputs for 8 channels. Rock64 has "Pi-P5+" pinheader with all 4 I2S signals available https://files.pine64.org/doc/rock64/ROCK64_Pi-2 _and_Pi_P5+_Bus.pdf . It is one of the few Arm boards apart of RPi with decent linux support, should be no problem to make working, with some elementary linux skills.
ROCKPro64 - PINE64
ROCK64 - PINE64
ROCKPro64 - PINE64
ROCK64 - PINE64
There is the RME Digiface and I own one - but it costs some... I'm seeking a little more budget multi channels toslink output...
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That's equivalent to using 2 stereo I2S lines, instead of just one (if available). I2S is always stereo (unless TDM format - then 2...e.g. 8). You could connect 2 SPDIF transmitters = 4channels.
If you want 4 SPDIF lines, you can use all 4 I2S lines and keep the even/odd channels silent - zeros.
If you want 4 SPDIF lines, you can use all 4 I2S lines and keep the even/odd channels silent - zeros.
4 channels on 2 ports (i.e. 2 toslink cables all in all) is OK as long as all will be addressable from CamillaDSP.
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How about using two USB SPDIF TX dongles?
HiFimeDIY.com sells a couple of DACs that also have SPDIF output as an additional feature, e.g. the UAE23. The USB chip operates in USB Adaptive mode, so two or more of them will remain synchronized.
HiFimeDIY.com sells a couple of DACs that also have SPDIF output as an additional feature, e.g. the UAE23. The USB chip operates in USB Adaptive mode, so two or more of them will remain synchronized.