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+--- Thread: [PROBLEM] Can I directly select the serial audio output format? (/showthread.php?tid=6267)
Can I directly select the serial audio output format? - pbjacob - 02-26-2024
Different DAC chip accepts different digital signal, for example, standard philips i2s, right justified, left justified, and so on.
I want to connect the output signals from Raspberry Pi directly to the input pins of two PCM56 chips, while this kind of DAC chip only accepts 16-bit, MSB-first, right-justified signal.
I haven't found a drop-down list in which SERIAL AUDIO DATA OUTPUT FORMAT can be selected. It seems that one can only choose a specific i2s device to make the moode system switch to a specific output format, but I don't know the relationship between the devices and the audio output formats.
If I misunderstood the system's menu function or did not correctly find the right place to set, please point it out to me. Thank you very much!
P.S. I know for PCM56, the audio digital signal should go through some 74 logic chips to separate the left and right channel.
RE: Can I directly select the serial audio output format? - Tim Curtis - 02-26-2024
moOde doesn't control the format of the I2S signal. AFAIK this is done by Broadcom SoC and Linux kernel.
Your best bet is to ask about I2S format on the Raspberry Pi Forums.