Is it possible to set non os mode in Philips CD130 with M50423FP signal processor?

Angelm · 11th October 2006, 02:11 PM

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

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.

11th October 2006, 02:11 PM	#1
Angelm diyAudio Member Join Date: Mar 2003 Location: Sofia	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

8th January 2007, 07:14 AM	#4
schtef diyAudio Member Join Date: Nov 2004 Location: ZG	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

8th January 2007, 08:53 AM	#5
tubenut diyAudio Member Join Date: Nov 2002 Location: South Africa, Jhb	Would be keen to know as well, have a 614 also. How does one change modes? Different pins to ground or Vs? __________________ Guillaume Croak Audio Exploration

9th January 2007, 03:23 PM	#7
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Or just lift the mode-change-legs? (maybe attach thin wires to the legs for testing) Arne K __________________ Ars longa, vita brevis

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11th October 2006, 06:34 PM	#2
singa diyAudio Member Join Date: Apr 2004 Location: near	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

13th October 2006, 03:49 PM	#3
Angelm diyAudio Member Join Date: Mar 2003 Location: Sofia	Thank you singa, I will try mode 9. Anyone else has Close Encounters of the Third Kind with this Mitsibushi processor ?

9th January 2007, 03:15 PM	#6
Angelm diyAudio Member Join Date: Mar 2003 Location: Sofia	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 ....

10th January 2007, 08:46 AM	#9
schtef diyAudio Member Join Date: Nov 2004 Location: ZG	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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