I picked up a 1985 Sony CDP-520ES with the BU-1 laser reader in good shape. It has a CX20152 DAC and a CX23034 digital filter. Unfortunatly it has no digital output. I'm looking to pic up an external DAC in the near future to use with my other CD players and would like to make this my main deck. Is it possible to add a digital output to this player?
I checked the Alldatasheets specs for both chips and the only DOUT that I come up with is on the filter. Shouldn't I be looking for DOUT on the existing DAC? As you can see I'm not an EE or an audio tech but I am pretty handy.
Thanks
BillWojo
I checked the Alldatasheets specs for both chips and the only DOUT that I come up with is on the filter. Shouldn't I be looking for DOUT on the existing DAC? As you can see I'm not an EE or an audio tech but I am pretty handy.
Thanks
BillWojo
It probably uses the Japanese I2S format. So you would need to convert from that to a more standarized I2S format.
You could poke around on the Filter chip pins to see if that outputs SPDIF. the SAA7220 has this, not sure about this sony proprietary IC.
CX23034 pdf, CX23034 description, CX23034 datasheets, CX23034 view ::: ALLDATASHEET :::
Looks like pins 5/6/7/8 and Pin 19 look interesting. But knowing Sony probably won't give a standardized format that you can plug into anything. This will be an I2S format or IIS format or JIS format, not SPDIF.
I would suggest that you modify this with a small amount of components, nothing expensive, maybe replace a few electrolytics with elna cerafines then call it a day. Then resell it stating that its been modified for better sound quality. Then go and get a transport that is a bit more open.
You could poke around on the Filter chip pins to see if that outputs SPDIF. the SAA7220 has this, not sure about this sony proprietary IC.
CX23034 pdf, CX23034 description, CX23034 datasheets, CX23034 view ::: ALLDATASHEET :::
Looks like pins 5/6/7/8 and Pin 19 look interesting. But knowing Sony probably won't give a standardized format that you can plug into anything. This will be an I2S format or IIS format or JIS format, not SPDIF.
I would suggest that you modify this with a small amount of components, nothing expensive, maybe replace a few electrolytics with elna cerafines then call it a day. Then resell it stating that its been modified for better sound quality. Then go and get a transport that is a bit more open.
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