Please Help Me make an SPDIF out for my SONY CDP deck
Happy new Year to everybody here at DIYAUDIO!!
I have a SONY medium sized deck model CDP-M205 (Ive heard it was never sold in the US) and I’ve decided to upgrade my sound by adding an external DAC.(Maybe a modded ART DI/O tube DAC). The CDP doesn’t have any form of digital out though. So I want to make an SPDIF out. I don’t care about utilizing the CDPs DAC anymore. I want to use it just as a transport. Other kinds of modification will take place of course later on such as dampening etc. I wrote down the chip numbers that I found on the printed circuit on the bottom side of the CD drive (since that’s where the interest is in this case)
CXA1992AR
CXD2529Q
BE5941F (Is this the actual DAC?)
I saw an old post here at DIYaudio where some guy had another Sony CDP and someone told him that if he pulls high pin 59 on the CXD2500Q chip then pin 60 can be SPDIF out.
Here’re some quotes
“The digital out is pin 60 on the CXD2500Q.
You have to pull pin 59 high to enable digital out. Just connect pin 59 to +5V. This may be tricky as it is probably soldered to ground.
….The output at pin 60 is not I2S but SPDIF format ready to go to the SPDIF output. (Digital out)”
Ive been wondering if theres something similar that could be done on my CDP.
Please if you have any ideas or thoughts post them.
Thanks In advance. I hope I hear from you, I think this is my second post here?
Happy new Year to everybody here at DIYAUDIO!!
I have a SONY medium sized deck model CDP-M205 (Ive heard it was never sold in the US) and I’ve decided to upgrade my sound by adding an external DAC.(Maybe a modded ART DI/O tube DAC). The CDP doesn’t have any form of digital out though. So I want to make an SPDIF out. I don’t care about utilizing the CDPs DAC anymore. I want to use it just as a transport. Other kinds of modification will take place of course later on such as dampening etc. I wrote down the chip numbers that I found on the printed circuit on the bottom side of the CD drive (since that’s where the interest is in this case)
CXA1992AR
CXD2529Q
BE5941F (Is this the actual DAC?)
I saw an old post here at DIYaudio where some guy had another Sony CDP and someone told him that if he pulls high pin 59 on the CXD2500Q chip then pin 60 can be SPDIF out.
Here’re some quotes
“The digital out is pin 60 on the CXD2500Q.
You have to pull pin 59 high to enable digital out. Just connect pin 59 to +5V. This may be tricky as it is probably soldered to ground.
….The output at pin 60 is not I2S but SPDIF format ready to go to the SPDIF output. (Digital out)”
Ive been wondering if theres something similar that could be done on my CDP.
Please if you have any ideas or thoughts post them.
Thanks In advance. I hope I hear from you, I think this is my second post here?
So I found the data sheet .(I entered the name of the IC on yahoo and pressed enter- there i got it) there is a Digital Out output at pin 71.
What kind of digital out would that be?
And If I want to use a comercial DAC with coaxial in what would it take to take the signal from this particular chip and take it to the DAC?
Please help me!
What kind of digital out would that be?
And If I want to use a comercial DAC with coaxial in what would it take to take the signal from this particular chip and take it to the DAC?
Please help me!
It should be a standard SPDIF output. You can test to see if it has been enabled by connecting it to a device with an electrical SPDIF input.
How would I do that. SPDFI is coaxial. So the center poin should be connected to the pin 71. What about the ground. Where should I connect the coaxials ground?
Any ideas.
Thanks for posting.
BTW. if it was SPDIF shouldnt it say so in the data sheet?
Any ideas.
Thanks for posting.
BTW. if it was SPDIF shouldnt it say so in the data sheet?
First find out if the output is enabled by testing it and then worry about the rest. My CD player uses the chassis for GND.
Forget about SFDIF. Use I2S direct by using my EIAJ to I2S converter. See my thread on sharing my digital work. You should be able to get the circuit from the description.
POr you can just use the TDA1543A. Since you ahve the datasheet finding the three signals would not be difficult.
CM
POr you can just use the TDA1543A. Since you ahve the datasheet finding the three signals would not be difficult.
CM
The thing is I dont yet have a Dac to test if SPDFI is enabled?
What is the deal with using the I2s? What is better with the TDA1543A? 😕
I would do that CM and Ive seen some relevant threads but the thing is that the designations for the pins are mabe named differently at my chip? I dont know which are the correct pins.
Please could someone take a look at my data sheet (the first page that will come when you enter the chip name on yahoo) and help me find the pins.
All ideas are welcome.
What is the deal with using the I2s? What is better with the TDA1543A? 😕
I would do that CM and Ive seen some relevant threads but the thing is that the designations for the pins are mabe named differently at my chip? I dont know which are the correct pins.
Please could someone take a look at my data sheet (the first page that will come when you enter the chip name on yahoo) and help me find the pins.
All ideas are welcome.
See page 47 of the datasheet.
TDA1543A uses the Sony format shown on pg 47.
TDA1543 uses the Philips I2S format.
Pin50 LRCK L/R data clock
Pin52 PMCD Serial audio data
Pin54 BCK Serial clock
TDA1543A uses the Sony format shown on pg 47.
TDA1543 uses the Philips I2S format.
Pin50 LRCK L/R data clock
Pin52 PMCD Serial audio data
Pin54 BCK Serial clock
ok thanks for looking at the data sheet too.
As youve realized I am no electronics specialist. I am sort of a beginner especially in terms of digital stuff.
So say I connect those 3 pins to the corresponding pins of the TDA1543A chip. Do I get two pins of the TDA1543A that give out analog signal to feed my amp? Or is the TDA1543 going to be a part of a new circuit? And if so what is that circuit (example maybe?)
Having seen my manual would this digital out be enabled and hat kind of digi out would it be? I would be interested in feeding an ART DAC with coax in.
Also Ive noticed (by practising on the chip of an old broken modem) that it is pretty hard to solder onto these little pins of the chip. It would be very good if you could give me some advice on this. It is much more difficult than soldering an opamp or something. Any special tricks?
And lastly where do I get this TDA1543A from? Is there somewhere online to get it from? How much does it cost?
As youve realized I am no electronics specialist. I am sort of a beginner especially in terms of digital stuff.
So say I connect those 3 pins to the corresponding pins of the TDA1543A chip. Do I get two pins of the TDA1543A that give out analog signal to feed my amp? Or is the TDA1543 going to be a part of a new circuit? And if so what is that circuit (example maybe?)
Having seen my manual would this digital out be enabled and hat kind of digi out would it be? I would be interested in feeding an ART DAC with coax in.
Also Ive noticed (by practising on the chip of an old broken modem) that it is pretty hard to solder onto these little pins of the chip. It would be very good if you could give me some advice on this. It is much more difficult than soldering an opamp or something. Any special tricks?
And lastly where do I get this TDA1543A from? Is there somewhere online to get it from? How much does it cost?
Looking at the datasheet, the three EIAJ signals are:
Data : 52
BCK : 54
LRCLK : 50
SFDIF output should be pin 71. It states in the datasheet that it is for home use. I did not see any enable pin, nor software enable commands. You have to try to see if it works. Note that you should not connect the SPDIF directly to the DAC. You need buffers, transformers. I have not done this before and cannot help you if you want to try this but I amsure that you would be able to find people in the forum who had done this beofre.
EIAJ output direct gives better quality sound, and it is cheaper, you save the cost of a CS8412 receiver. However, if you are using a commercial DAC instead of a home brew one, then you will need SPDIF.
There are many home brew DAC in the web, the simpliest and good sound is the TDA1543A. Just conect the three signals directly to the chip and you are in business. See this site for a project that I have tried and worked. WS in the TDA1543 is the same as LRCLK in the EIAJ format.
See this project:
http://www.geocities.com/agalavotti/dac.htm
Replace the TDA1543 in the project with TDA1543A and you can connect directly to the CXD chip. I have done so and it works.
TDA1543A cost cbout $2 US each. It is very common and you should have no problem finding it in any hobbist shop or at spares parts shops.
Data : 52
BCK : 54
LRCLK : 50
SFDIF output should be pin 71. It states in the datasheet that it is for home use. I did not see any enable pin, nor software enable commands. You have to try to see if it works. Note that you should not connect the SPDIF directly to the DAC. You need buffers, transformers. I have not done this before and cannot help you if you want to try this but I amsure that you would be able to find people in the forum who had done this beofre.
EIAJ output direct gives better quality sound, and it is cheaper, you save the cost of a CS8412 receiver. However, if you are using a commercial DAC instead of a home brew one, then you will need SPDIF.
There are many home brew DAC in the web, the simpliest and good sound is the TDA1543A. Just conect the three signals directly to the chip and you are in business. See this site for a project that I have tried and worked. WS in the TDA1543 is the same as LRCLK in the EIAJ format.
See this project:
http://www.geocities.com/agalavotti/dac.htm
Replace the TDA1543 in the project with TDA1543A and you can connect directly to the CXD chip. I have done so and it works.
TDA1543A cost cbout $2 US each. It is very common and you should have no problem finding it in any hobbist shop or at spares parts shops.
CM could you please pick up a couple of them for me. I could send you US dollars or EUROS
My email is marios_mar @ yahoo.com without the spaces of course if you like send me your address and the amount you want to ship me 2 of those chips pls.
My email is marios_mar @ yahoo.com without the spaces of course if you like send me your address and the amount you want to ship me 2 of those chips pls.
I also have the following question : These 3 pins that I will solder wire onto am I going to pull them up or am I going to leave them as they are and solder on them . Am I going to be able to use the original analog out of the player this way?
What wire do you use for that purpose and how do you manage to do these microscopic solders?
What wire do you use for that purpose and how do you manage to do these microscopic solders?
Hi Mario,
Do not solder at the IC chip. Trace where the line goes to and solder at any thru hole part, coneector or anywhere where there is a substancial soldering pace. You do not need to pull up, I think.
To make it better, buffer the three signals by using a 74VHC125 or double inverter using one 74VHC04. In fact any 74 series IC will do. This way, you will not load the chip too much.
Your analogue out will still work, if you did not kill anything in the process of making the mod.
I can buy TDA1543A for you.
TDA1543 - USD2 each -
TDA1543A S1 - USD3 each
TDA1543A S2 - USD4 each
Postage for four pieces should be covered by USD5 ( with change for me ). You can post Euro inplace of USD - it is better for me .
I am making money out of this but not significant as it is more trouble for me to go to the shops to buy it. I am doing it as a pricinple - I will make money out of it and donate 10% of revenue it to upkeep diyaudio. Besides, it is still cheaper than your source!
To save me many trips, anyone else who wants this, please e-mail me so that I can do all at one shot. I will be travelling to Birmingham, and then onto Sao Paulo week after next and will not be in town for run errands then.
Do not solder at the IC chip. Trace where the line goes to and solder at any thru hole part, coneector or anywhere where there is a substancial soldering pace. You do not need to pull up, I think.
To make it better, buffer the three signals by using a 74VHC125 or double inverter using one 74VHC04. In fact any 74 series IC will do. This way, you will not load the chip too much.
Your analogue out will still work, if you did not kill anything in the process of making the mod.
I can buy TDA1543A for you.
TDA1543 - USD2 each -
TDA1543A S1 - USD3 each
TDA1543A S2 - USD4 each
Postage for four pieces should be covered by USD5 ( with change for me ). You can post Euro inplace of USD - it is better for me .
I am making money out of this but not significant as it is more trouble for me to go to the shops to buy it. I am doing it as a pricinple - I will make money out of it and donate 10% of revenue it to upkeep diyaudio. Besides, it is still cheaper than your source!
To save me many trips, anyone else who wants this, please e-mail me so that I can do all at one shot. I will be travelling to Birmingham, and then onto Sao Paulo week after next and will not be in town for run errands then.
"You do not need to pull up, I think."
Havent you done this before?
Has anyone modded their SONY cdp so they can enlighten us on those details?
Havent you done this before?
Has anyone modded their SONY cdp so they can enlighten us on those details?
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