Deriving I2S from Sony CDP

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#21
He needs to use LRCK at 44.1KHz. From memory the only difference between the A and the non A is that the A is Sony format and the non A is Philips I2S. The TDA1543/A is a low cost device and with only 8pins to play with a format selection pin is not an option.

ray.
 
#22
i tried the 1543A before as i was told that the 3 signal lines from the saa7345 is japanese format and not i2s.

well, turned out that the implementation of saa7345 in the marantz cd63 IS i2s, so tda1543 works there, but not tda1543a.
http://www.diyparadise.com/rm20dac.html

that said, i should have 2 pcs of tda1543a.

peter daniel, if you need these 2 pcs. i could send them to you for free. just remember to update us (me included) if they work with your sony.

DonJuan
 
#24
Re: Re: Re: Deriving I2S from Sony CDP

Elso Kwak said:


Hi ray,
Must Peter use LRCK or WCLK to connect to pin 2 (WS) of the TDA1543A ? What is the difference between the two versions of the TDA1543?😕 :bawling:
Click to expand...


rfbrw said:
He needs to use LRCK at 44.1KHz. From memory the only difference between the A and the non A is that the A is Sony format and the non A is Philips I2S. The TDA1543/A is a low cost device and with only 8pins to play with a format selection pin is not an option.

ray.
Click to expand...

I connected LRCK (instead of WCLK) to pin 2 of TDA1543 and I got good signal, but at very low level. With a volume all way up, you can barely hear it in the speakers.
 
#25
In the Sony corner we have 16bit LSB justifed data with 24 SCLK cycles per channel.
The TDA1543 requires I2S with the MSB of the data one SCLK cycle after a LRCLK edge.
So with 16bit LSB justified data and 24 SCLK cycles per channel the MSB will appear 8 SCLK cycles after LRCLK edge . You need to delay LRCLK by 7 SCLK cycles.

ray.
 
#27
Peter Daniel said:
The digital filter in this player, CX23034, doesn't have SPDIF output. Is there any Sony (or other) chip I can substitude in place of CX23034 to obtain digital out?
Click to expand...


Not clear as to why you want SPDIF out as you already have clock and data lines but any of the Cirrus/ Crystal CS840x SPDIF tx chips will provide what you require.

ray.
 
#28
rfbrw said:



Not clear as to why you want SPDIF out as you already have clock and data lines but any of the Cirrus/ Crystal CS840x SPDIF tx chips will provide what you require.

ray.
Click to expand...


To use outboard DAC with SPDIF input.

It seems like this Sony format is not easily compatible with any of the popular DACs used here, so I was thinking of just getting digital out and using any DAC with SPDIF input. The question is are those Crystal chips compatibe with Sony format?😉
 
#29
Having chosen to stray from the beaten path, you have to expect a bumpy ride. Be that as it may, the CS8405 will do what you require as will the TDA1307 1bit digital filter(microcontroller needed) through its 20bit SPDIF output. On the dac side there is the TDA1305T,TDA1311A,TDA1543A,TDA1545A and the TDA1549. The TDA1305T and the TDA1549 are Bitstream dacs. Or as I said before you could just delay LRCLK with a shift register.

ray.
 
#32
rfbrw said:



What do you want to know ?
Click to expand...


I would like to know what it will take to make this cd player work with my external dac. is it possible or to hard ?

This is the dac i have. >
 

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#33
eeeeek a nos dac.:yuck:

You have two choices. You can add a SPDIF transmitter to your CD player or go directly to the TDA1541 bypassing the CS8414.
Is your player one with the CX23034/5 chipset or does it have one of the newer CXD25xx chips?
 
#35
The CX23034 is the digital filter and there should also be a CX23035. The data and clock lines you need run between the two chips.
Next thing you need to decide is whether you want to connect directly to the TDA1541, bypassing the SPDIF TX and RX or install a SPDIF TX for maximum flexibilty. If you do decide on SPDIF, you will also need to decide which SPDIF transmitter chip you want to use or can get as that can have a major impact on the design.
 
#37
In that case I think you best go for the safe option and add SPDIF to the CD player and leave the dac alone.
Now you need to decide how you want to approach this. SMD or DIP? Do you want to lay out a PCB? Can you program a microcontroller? Can you get from any of the following devices?

SMD Devices
AK4103
CS8406
DIT4096
DIT4192

DIP Devices
CS8402
TC9271
 
#38
rfbrw said:
In that case I think you best go for the safe option and add SPDIF to the CD player and leave the dac alone.
Now you need to decide how you want to approach this. SMD or DIP? Do you want to lay out a PCB? Can you program a microcontroller? Can you get from any of the following devices?

SMD Devices
AK4103
CS8406
DIT4096
DIT4192

DIP Devices
CS8402
TC9271
Click to expand...


I dont know how to programa microcontroller as i have a mac BUT i can get it done as i have many friends that are good at this. Do yo have a schematic I can build my own pc-board also. Any help would be greatly apreciated. 🙂
 
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