| DonJuan |
hi! apparently, the tda1543a accepts japanese input format, as opposed to i2s of 1543. the digital decoder saa7345 of the marantz cd63 outputs japanese format (and not i2s), so wondering how shoudl i wire this together?
i can't seem to find any info on tda1543a. any datasheet or apps note will be much appreciated. thanks!
DonJuan |
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| DonJuan |
i have this datasheet. i'm looking for tda1543a not plain vanilla tda1543.
thanks anyway!
DonJuan |
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| DonJuan |
Hi Elso,
thanks for the reply. I've read that thread before but it still doesn't answer what I need to know though. :(
anyone has more info on tda1543a? thanks.
DonJuan |
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| Elso Kwak |
| quote: | Originally posted by DonJuan
Hi Elso,
thanks for the reply. I've read that thread before but it still doesn't answer what I need to know though. :(
anyone has more info on tda1543a? thanks.
DonJuan |
Hi DonJuan,
If your question is how to wire it together my answer is just connect as the non-A version. I believe the pinout of the A-version is the same.
You have the pindesignation of the digital decoder SAA7345?
:bulb: |
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| DonJuan |
Hi Elso,
mucho gracias for the fast replies.
I have schematics for the CD63 and have located the digital signals. I first thought these are I2S and wanted to hook up a TDA1543 directly but later was told that these are Japanese format, EIAJ. Thus, the 1543 is ruled out.
Couldn't find any info on what the EIAJ format looks like, nor how to convert EIAJ to I2S. But I recall somewhere, some time ago that TDA1543A accepts "Japanese input format". Not sure whether this is THE format as being output from SAA7345. Hence my queries.
Wiring should be the same as 1543 but would like to know more about 1543A and/or these different data formats before I start soldering.
Thanks!
DonJuan |
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| jean-paul |
Hello DonJuan,
If you would have looked in the datasheet as seen here:
http://www.arky.ru/audio/sprav/datasheets/saa7345.pdf
you would have seen that the SAA7345 has a selectable I2S mode for DAC output. Please see page 12. So you can use TDA1543 if you want to.
Regards,
\Jean-Paul - that always wonders why people don't use Google |
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| DonJuan |
Hi jean-paul,
Thanks for the reply.
It is to my understanding that the settings are done thru firmware. That is a problem for me as I intend to use the TDA1543A in my Marantz CD63. No intention of reprogramming the micro-controller!
DonJuan |
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| jean-paul |
Mmm, I just looked in the datasheet and you're right. All I can say is that the TDA1543A works with a Sony CXD2551P digital filter.
A lot of cheaper cd players from some years ago had that combination. It is impossible to let it work with a CS8412 is all I know. Probably it will simply work when you connect it to the SAA chip. I guess it is a case of trial-and-error. Dangerous theory, I know ;)
But why do you want to use it in a CD63 ? That player has a good DAC chip in it !?!? If you persist on using it for non os purposes maybe you can make an external DAC with a CS8412 and a TDA1543. Saves you the hassle and the risk of damaging the CD63. The PCB material used is not exactly rugged in these machines. |
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| DonJuan |
Hi jean-paul,
To work with a CS8412, I think I will need some circuitry (shift register and what else) to convert EIAJ to I2S format, but no idea how EIAJ looks like in the first place!
| quote: | | But why do you want to use it in a CD63 ? That player has a good DAC chip in it !?!? If you persist on using it for non os purposes maybe you can make an external DAC with a CS8412 and a TDA1543. Saves you the hassle and the risk of damaging the CD63. The PCB material used is not exactly rugged in these machines. |
Good point. Well, 8412 jitter is not that low right? Plus never like the idea of I2S convert to SPDIF, then convert back to I2S... I feel that it makes sense to bypass all this ****! Just I2S straight to TDA1543. Unfortunately, seems like I can't do so in my CD63. Hence, wanting to try TDA1543A.
Another reason for wanting to try out is that the 3 lines carrying WCLK, SDATA and SCLK from the SAA7345 terminate at a 220ohm resistor before going into the DAC. Thus, accessing these 3 lines is piece of cake. No need to cut any traces. Just lift one end of the resistors and take off!
| quote: | | Probably it will simply work when you connect it to the SAA chip. I guess it is a case of trial-and-error. Dangerous theory, I know |
That's right. Kind of risky, that's why I'm finding out whatever info I could... I guess if I can't find anything, might as well try...
Wish me luck!
DonJuan |
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| jean-paul |
I wish you luck, DonJuan ! BTW you can reclock the signal of the CS8412 to make jitter lower.
Jean-Paul |
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| fcserei |
| quote: | Originally posted by DonJuan
Good point. Well, 8412 jitter is not that low right? Plus never like the idea of I2S convert to SPDIF, then convert back to I2S... I feel that it makes sense to bypass all this ****! Just I2S straight to TDA1543. Unfortunately, seems like I can't do so in my CD63. Hence, wanting to try TDA1543A.
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Why not? A 17 bit shift register on the data line is about you need. |
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| Nisbeth |
Pardon me for butting in with a few questions of my own, but what's the difference between 1543N and 1543? Can it be used with the CS841X for the DAC-project mentioned in another thread? Only asking because a German online retailer sells the 1543N for 0.60 Euro/pcs, which seems cheap to me... Also, what is the difference between 8412 & 8414 (in this application) ?
TIA!
/U. :scratch: |
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| Nisbeth |
Pedja, does this mean I can use the 1543 that Reichelt sells for the DAC without problems?
/U. |
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| Pedja |
Yes Nisbeth. I still did not solder it, but I don't expect any problems.
Pedja |
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| DonJuan |
Hi!
jean-paul said:
| quote: | | I wish you luck, DonJuan ! BTW you can reclock the signal of the CS8412 |
Well, guess what? I tried tapping the I2s signal from my CD63 and found that with the TDA1543A, I get a buzzing sound. Definitely not right. I was dissappointed as I was told that the signal format from the SAA7345 is Japanese input and TDA1543A is supposed to work with Japanese input. But it doesn't work! :dead:
Anyway, since I have nothing to lose, I plugged in a TDA1543 and... lo and behold! I could hear music! :nod:
So the SAA7345 output is I2S after all!
Damn cheap non-oversampling DAC!
This opens up lots of opportunities. I believe you can fit in a TDA1541 there and you'll be smoking!
Current plan I have is to optimize this circuit (it needs a gain stage), then drill 2 holes on the chassis to accomodate output RCA jacks. This way, I have 2 DACs in one chassis. :idea:
DonJuan |
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| rbroer |
DonJuan,
how do you know the output of the SAA7345 is non oversampled, that is 1*fs/16 bits and not oversampled like 4*fs 16 bits ?
Did you measure the BCK frequency ? |
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| Elso Kwak |
| quote: | Originally posted by rbroer
DonJuan,
how do you know the output of the SAA7345 is non oversampled, that is 1*fs/16 bits and not oversampled like 4*fs 16 bits ?
Did you measure the BCK frequency ? |
Hi All,
To put it more bluntly, the datasheet indicates a 2 to 4 times oversampling integrated digital filter.;) |
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| DonJuan |
Hi all,
I don't have a scope so I can't really measure it, refering to page 8 of CD63 service manual, it seems that the digital filter 8x oversamples the sampling frequency input, hence my guess.
If anyone could confirm this, I'll be pleased to know.
DonJuan |
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| Pedja |
DonJuan, thanks for the info, this is really interesting.
As SM5872 is delta/sigma DAC and incorporates 8fs oversampling filter it is quite logical that no oversampling is done before it. Also, according to cd63’s Service Manual (page 16), wclk signal is 44.1kHz. Sclk (bck) looks alike 48 x wclk, i.e. ~2.1MHz (actually diagram shows 10-20% less freq than it should be, but it was most likely problem with printing).
Pedja
(14 is wclk, 13 is sclk) |
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| DonJuan |
Hi Pedja,
Thanks for digging out more info.
Guess the possibilities are endless! Could easily fit in a board that has TDA1541 and a tube gain stage and you now have 2 DACs in a player!
Have fun!
DonJuan |
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| rfbrw |
The format used by the TDA1543A requires 48 SCLK cycles per L/R frame. For 2 examples see the datasheets for the Sony CXD2551 digital filter and the TDA1305 dac.
ray. |
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| jean-paul |
Hi Ray,
Do you have the datasheet of the Sony CXD2551 digital filter ?
I searched for it on the web but did not find it. And do you know something about it's quality ?
Regards,
Jean-Paul |
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| rfbrw |
Partminer.com have the datasheet for the CXD2551. As to its quality I cannot comment as I have not knowingly listened to it. If its age is any guide, the fact that it is a contemporary of the TDA1543A would place it somewhere in mid 80's to early 90's bracket.
ray. |
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| jean-paul |
| Thanks for the information but I am cautious with registration on websites. I have a full mailbox every morning ;) |
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| ashok |
Can anyone post a complete working circuit diagram of a DAC using the 1543 or 1543A ? Preferably with some comments about its sound.
Thanks,
Cheers. |
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| ashok |
Thanks Elso. You are a saviour. I was dying to see an actual implementation. I am arranging to get some chips from Tone.
Thanks.
I can compare it against the TDA1541 and the PCM 63 when I get the boards done. Should be very intereszting.
the TDA 1541 is working now but the PCM63 is being set up. |
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| fedde |
| quote: | Originally posted by ashok
Thanks Elso. You are a saviour. I was dying to see an actual implementation. I am arranging to get some chips from Tone.
Thanks.
I can compare it against the TDA1541 and the PCM 63 when I get the boards done. Should be very intereszting.
the TDA 1541 is working now but the PCM63 is being set up. |
Soon I'll update my dac page. I made the Nonoz II ;)
This time with digital transformer, better quality components, pcb, nice case etc.
Fedde |
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| Lyra |
Sorry to bring up this old post again, but I am looking for some TDA1543, AND TDA1543A, and can't find anybody here in Norway that sells them....:bawling:
Does anybody have some (aprox 10 of each..) to sell, or do You have an adress to someone that sells this.
Need also some Black Gates I think...and maybe a KSS-151A laser (if someone have one to much..)??? :confused:
BTW:
Is there a way using 20 bit's DAC's when going NOS....without problems. What will happen when theese chips only get 16 bit ?
Is TDA1543 the only chip I could use directly connected to the I2S signals ?
If I choose TDA1541A I'll need a filter between, doesn't I ?
What about the TDA1545 ? Is this a inferior DAC compared to TDA1543 ?
Lyra |
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