I finally got the first receiver https://www.aliexpress.com/item/4000282012228.html?spm=a2g0o.cart.0.0.2ad738daucG0LA&mp=1&pdp_ext_f=%7B%22cart2PdpParams%22%3A%7B%22pdpBusinessMode%22%3A%22retail%22%7D%7D
1) I disconnect PIN 1 & 2 from the quartz.
2) I disonnected the 2 MUTE circuit transistors otherwise (if there is no CD playing) the power supply is off.
Then I did the following connections:
RECEIVER to SM5817
Gnd ------------> Gnd
Pin2 (unsoldered - on air)
LRCK -----------> R251 ---------> Pin5
BCK ------------> R254 ----------> Pin7
DATA -----------> R252 (on air) ---------> R253 ------> Pin 6
Nothing happened. All quiet.
Then I removed the resistors and straight connect:
LRCK to PIN 5 (LRCI at the SM5817)
BCK to PIN 7 (BCKI at the SM5817)
DATA to PIN 6 (DIN at the SM5817)
Also nothing happened.
I took some measurements using my multimeter:
RECEIVER BOARD: LRCK 1.63V BCK 1.63V
How can I check if the SM5807 (aka 5807) or the PCM56?
What else I can do?
Can this receiver work properly with the SM5817 or PCM56?
1) I disconnect PIN 1 & 2 from the quartz.
2) I disonnected the 2 MUTE circuit transistors otherwise (if there is no CD playing) the power supply is off.
Then I did the following connections:
RECEIVER to SM5817
Gnd ------------> Gnd
Pin2 (unsoldered - on air)
LRCK -----------> R251 ---------> Pin5
BCK ------------> R254 ----------> Pin7
DATA -----------> R252 (on air) ---------> R253 ------> Pin 6
Nothing happened. All quiet.
Then I removed the resistors and straight connect:
LRCK to PIN 5 (LRCI at the SM5817)
BCK to PIN 7 (BCKI at the SM5817)
DATA to PIN 6 (DIN at the SM5817)
Also nothing happened.
I took some measurements using my multimeter:
RECEIVER BOARD: LRCK 1.63V BCK 1.63V
How can I check if the SM5807 (aka 5807) or the PCM56?
What else I can do?
Can this receiver work properly with the SM5817 or PCM56?
I also connected (for just a few seconds) the SCK from the receiver to PIN 1 (through an 100Ohm) with no results.
What will happen if I connect back the existing quartz to 1&2?
What will happen if I connect back the existing quartz to 1&2?
The DF will not work without a system clock and even with original back in place, it will not work with the PCM2706C.
So, that means that I have to change the receiver board.
Are there USB to I2s receiver boards compatible to SM5817? The SM5817 has 16.9Mhz and there is also an option to set up at around 8Mhz.
Or I have to go for NOS set-up?
Are there USB to I2s receiver boards compatible to SM5817? The SM5817 has 16.9Mhz and there is also an option to set up at around 8Mhz.
Or I have to go for NOS set-up?
The PCM2706C has a system clock of 256Fs and the output data format is I2S. This is a late 1980's cd player with a Sony decoder and a NPC digital filter. Data output format from decoder to filter is Sony, system clock is 192Fs or 384Fs and BCLK is 48Fs. If the SM5817 will not work with BCLK at 64Fs you will need glue logic to bridge the gap and you are going to need glue logic if you go NOS.
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That turns too complicated for me and beyond my knowledge and abilities. I think I wiil leave this project aside.
It's a pitty, because I'm always trying to repair/update old equipment in order to produce as less as much electronic garbage.
So, I will try to replace old cd transport (KSS-210A) and keep the DENON alive (although I'm listening music through my PC).
As for DAC, I'll go for a plug'n'play one like TOPPING D10s (I could also use in the future the PDIF output to a better DAC).
At least, I've learned some new things about digital. Not bad at all.
Anyway, thank you very much for the proposals and your overall help. I really appreciate it.
It's a pitty, because I'm always trying to repair/update old equipment in order to produce as less as much electronic garbage.
So, I will try to replace old cd transport (KSS-210A) and keep the DENON alive (although I'm listening music through my PC).
As for DAC, I'll go for a plug'n'play one like TOPPING D10s (I could also use in the future the PDIF output to a better DAC).
At least, I've learned some new things about digital. Not bad at all.
Anyway, thank you very much for the proposals and your overall help. I really appreciate it.
You could use one of these
Change a resistor or two, add 2 74HC163, stick it all on a bit of veroboard and, in combination with the PCM2706C board, you are good to go.
Change a resistor or two, add 2 74HC163, stick it all on a bit of veroboard and, in combination with the PCM2706C board, you are good to go.
It is an example of an asynchronous sample rate converter. It converts all incoming sample rates within a given range to a set output sample rate
and as part of its function it can perform format conversion.
It could be any sample rate converter, the CS8421 is just an example. This particular board is relatively easy to reconfigure
by simply changing resistor values.
In this case it would act as a bridge between the clock domain of the PCM2706C and clock domain of the cd player.
The PCM2706C board would provide the input signals to the CS8421 with its input side in slave mode. On the output side, also in slave mode, the cd player system clock, 384Fs, would provide the input clock signals to the SM5817 and the CS8421 clocking out the data in the same format as that of the CXD1130. In short, data would clocked into the CS8421 at 64Fs and clocked out at 48Fs the clock rate used by the CXD1130 to clock data into the SM5817. In this setup the CS8421 would not need the 24.576MHz clock or any clock. It is only a little more complicated if you wish to keep the cd player side operational.
and as part of its function it can perform format conversion.
It could be any sample rate converter, the CS8421 is just an example. This particular board is relatively easy to reconfigure
by simply changing resistor values.
In this case it would act as a bridge between the clock domain of the PCM2706C and clock domain of the cd player.
The PCM2706C board would provide the input signals to the CS8421 with its input side in slave mode. On the output side, also in slave mode, the cd player system clock, 384Fs, would provide the input clock signals to the SM5817 and the CS8421 clocking out the data in the same format as that of the CXD1130. In short, data would clocked into the CS8421 at 64Fs and clocked out at 48Fs the clock rate used by the CXD1130 to clock data into the SM5817. In this setup the CS8421 would not need the 24.576MHz clock or any clock. It is only a little more complicated if you wish to keep the cd player side operational.
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