Sm5840 Pcm63

[MJPAudio]

Hay guys,

I have connect a pcm63 to a Sm5840 in my Philips cd930 and i get a lot of noise can someone help me?
i have a schematic of the cd930
http://www.vt52.com/ftp/semi/pcm63.pdf
http://www.alldatasheet.com/datasheet-pdf/pdf/NPC/SM5840A.html

maarten

 

[rfbrw]

Assuming all your connections are correct, you will need to match the output format of the SM5840A with the input format of the PCM63.

 

[MJPAudio]

can you please help me to do this?

 

[rfbrw]

It would be easier with a schematic.

 

[MJPAudio]

schematic 1

 

[MJPAudio]

schematic 2

 

[rfbrw]

The second diagram is not clear enough to enable me to make out the input settings for the SAA7350 and thus the output settings for the SM5840A but this can be worked around. How have you connected the SM5840A to the PCM63's and can you float the MCK, MDT and MLE pins?

 

[MJPAudio]

Sorry for the slow reaction.
Here is the schematic 2.
What do you mean with float?

Thnx alot

 

[MJPAudio]

schematic

 

[rfbrw]

The best option is to use a microcontroller to change the internal settings of the SM5840 to meet the needs of the PCM63. If you can program a microcontroller it is very easy. A few lines of code and you are done.
The other two possibilities are just plain nasty.

 

[MJPAudio]

yes i can program a atmel at90s1200
if you can give me some hints

 

[rfbrw]

On page 15 of the SM5840A is all the relevant information. All you need to do is load two bytes at start-up.
Byte 1 is 1000 0000.
Byte 2 is 1101 0011
These settings will work but it might be an idea to make some of the bits selectable either via switch or jumpers.
You will also have to disconnect the data lines from the onboard microcontroller, MDT, /MLE and MCK and connect your own microcontroller.

 

[MJPAudio]

okay is it possible that i connect a Sm5843 instead of a sm5840

 

[rfbrw]

http://www.diyaudio.com/forums/showthread.php?postid=879458#post879458

 

[MJPAudio]

Yes thats the problem i have a Marantz cd4000 and a philips cd930 and i want connect my pcm63 to it without spdif.

 

[MJPAudio]

can you please help me connect the SM5843 to the cd930

 

[rfbrw]

You need to be more precise about what you want to do.

 

[MJPAudio]

i want to connect the sm5843 to the philips cd930 so that i can use the pcm63. but i very difficult for me to do that.

Thnx maarten

 

[MJPAudio]

would you please help me?

 

[rfbrw]

How can anyone help, if you are not clear about what you want.