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From: sgm@otter.hpl.hp.com (Steve Methley)
Newsgroups: sci.electronics
Subject: Re: Adding External D/A to Phillips CD Player
Message-ID: <1770024@otter.hpl.hp.com>
Date: 29 Nov 90 14:22:06 GMT
References: <23027@janus.trl.oz>
Organization: Hewlett-Packard Laboratories, Bristol, UK.
Lines: 27

spicer@janus.trl.oz (Steve Spicer, Telecom Research Labs, CS&S Branch) asks in
Message-ID: <23027@janus.trl.oz>:

> A friend of mine (really!) has a CD player and external Digital-to-Analogue
> converter that he wants to connect together. The units concerened are:
> 
>                   *  Philips 204 CD player
>                   *  Meridian 203 D/A Converter.........
> ..........CD player is rather old now, and has no "raw" digital outputs.

I don't know the exact Philips player, but chances are that it contains second
generation Philips chips, as do lots of other non-Philips players, with the
notable exception of Japanese players.  Anyone who wants a standard digital
audio output from any such player has a fairly simple task:  Find the SAA7220
chip and.., well that's it really, as the chip has a digital audio output
provided.  You need to provide a rear panel socket, a capacitor and two
resistors.

Details like pin number and values are to be found in the full Philips
datasheet for the SAA7220, which I don't presently have to hand, but is freely
available. 

Hope this helps, and is of general interest.

Cheers,
Steve.
These are my own opinions.