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Old 15th January 2012, 09:19 PM   #1
tubee is offline tubee  Netherlands
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Default S/Pdif on a 14 bit machine, anyone at last?

Have a CD 304 machine been give for free with the great CDM1 mechanism

Has anyone at last get a working schematic of a i2s or spdif output on the SAA7010 or SAA7020 chips?
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Old 16th January 2012, 09:12 AM   #2
UV101 is offline UV101  England
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any of these will give you the schema for SPDIF out on the 7220.....CD50 is probably easiest. Failing that, there will always be the SAA7220p datasheet.

Maranantz CD65, CD40,CD50,CD60,CD94
Philips CD960...........

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Old 16th January 2012, 09:24 AM   #3
tubee is offline tubee  Netherlands
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Thanks for reply

Yes had a 304 MK2 but sold it. Now playing downstairs with a CD880

Want a 2nd machine with the rock solid CDM1.

Thought it over: easyest way is to add a SAA7210 on the HF output with a RAM and sent I2S to a PCM... chip wich converts it to music and Spdif

Don't know if the CDM likes 2 decoders on its tail...
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Old 16th January 2012, 10:11 AM   #4
UV101 is offline UV101  England
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not sure you really want 2 decoders or even it it would work. My mistake, I read quickly and read 7020 as 7220...sorry ;(

Not sure this is what you want to hear but.........

SPDIF Output from SAA7020, SAA7000
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Old 16th January 2012, 02:55 PM   #5
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SAA7210, like all the CD decoders, needs to control the spindle motor speed to recover the data. It is a electro-mechanical PLL loop that tries to keep the 16KB buffer half-full.

It would not work without that motor control connection.

Last edited by SoNic_real_one; 16th January 2012 at 03:01 PM.
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Old 16th January 2012, 03:35 PM   #6
tubee is offline tubee  Netherlands
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Yes thats what i forgot in a moment. Then its going to be difficult
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