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-   -   Is it possible to set non os mode in Philips CD130 with M50423FP signal processor? (http://www.diyaudio.com/forums/digital-source/88093-possible-set-non-os-mode-philips-cd130-m50423fp-signal-processor.html)

Angelm 11th October 2006 02:11 PM

Is it possible to set non os mode in Philips CD130 with M50423FP signal processor?
 
I found Philips CD130 (dac 1543) in mint condition, so I want to upgrade to non os mode.
Unfortunately, it is with Mitsubishi M50423FP signal processor.
In the PDF I found on page 17/18 described available mode.
Now it is set mode 5.
Do you think, it is possible to set mode 7 or 9.
Will this have effect on digital out - pin 4 DOTX

Sorry bother you with this strange processor.


http://www.datasheet4u.com/download.php?id=551540

singa 11th October 2006 06:34 PM

Hi,
I read the datasheet of m50423fp.
For Fs or nos tda1543 MSB 1st.
Mode 7 is interpolation - For use with external digital filter.

That leaves mode 2 or 9. Fs bypass filter. Timing different.

Pin 4 DOTX = spdif.

You can hardwire to get what you want.Just follow the table 1.

1=Vcc or 0=Gnd. DASEL 1 - 4

Angelm 13th October 2006 03:49 PM

Thank you singa,
I will try mode 9.
Anyone else has Close Encounters of the Third Kind
with this Mitsibushi processor ?

schtef 8th January 2007 07:14 AM

is it working?
 
I recently obtained a Philips 614 cd player with the same M50423FP ic. Have you managed to get non oversampled signal from the mitubitshi dsp? Which mode should i try?

Thnx

tubenut 8th January 2007 08:53 AM

Would be keen to know as well, have a 614 also.
How does one change modes? Different pins to ground or Vs?

Angelm 9th January 2007 03:15 PM

Hi schtef,
I haven't manage to set nos mode, yet.
I think, there are connections under chip on the board.
So the DASEL pins have to be desoldered, by air solder,
which i am looking for ....

Cobra2 9th January 2007 03:23 PM

Or just lift the mode-change-legs?
(maybe attach thin wires to the legs for testing)

Arne K

Angelm 10th January 2007 06:48 AM

Quote:

Originally posted by Cobra2
Or just lift the mode-change-legs?
(maybe attach thin wires to the legs for testing)

Arne K


It's just my idea :-)

schtef 10th January 2007 08:46 AM

First I have to finish my dac. It's still on paper :) . Then I'll try with the dasel pins. Had the same idea with the pins.


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