need help with a 90's DAC (Muse Model Two)

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#22
EitanDainn said:
those are just what the digital board sends to the pcm63 since it is only data language it can read. for a dac to work it needs these values to create a line out in the end. PCM and I2S are NOT input connections. (there is some dacs that have I2S inputs, this is to bypass the input receiver, what an input receiver does is convert digital in's such as coaxial spdif and break them down into data. so a I2S input's purpose is to bypass the input receiver, and connect directly to the dac.)
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All modern digital interfaces (including S/PDIF) use phase modulated signaling. I2S doesn't. All modern digital interfaces (including S/PDIF) employ error detection. I2S doesn't. The purpose of the digital receiver is to insure data integrity. So tell me, why is I2S superior to every other modern digital interface?

It's obvious you haven't read the I2S specs. The sole purpose I2S was to allow chip to chip data transfer without prior agreement regarding data format. I2S, as designed, allows the sender of data to include as many bits as it has and the receiver will happily accept as many bits as it wants, discarding unneeded bits and zero-filling needed but un-received bits. Of course, that was too complicated for audiophiles so they simplified it by specifying all I2S frames were either 32 of 64 bit stereo frames. One step forward, two steps backward. That's the audiophile way.
 
#25
@rfbrw I am no expert by any means, I am trying to learn. if you got any documents I should read, or forums I should learn from. please send them.
I don't understand why you are being so toxic. I just know some basic stuff.
(I am a rapid learner, so I catch on to things quite quick, even if they are wrong. so giving me pointers is always appreciated. you just chose to be mean for no reason at all.)
 
#26
The CS8412 datasheet covers most of the serial audio interface formats. I2S is just one of them. More to the point is that the serial audio data carried by I2S is PCM encoded. It is exactly the same audio data required by single channel dacs like the PCM63. The difference is that left and right channels are in serial which slightly complicates its use with single channel dacs.
 
#28
I think that one of @rfbrw's points is that formats and encodings aren't the same thing. I2S is an example of the former and PCM is one of the latter. Hence all audio DACs receive PCM encoded data but they do so via various formats. Therefore its true but irrelevant your statement (post #23) that 'PCM63s only accept PCM (encoded) data'.
 
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