CD-ROM 'digital' port

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On many CD-ROM drives, there is a 2-pin 'digital' port with pins labeled 'D'
and 'G'.  Is there a standard specification for this or does it vary across
model and manufacturer?

Thanks.



Re: CD-ROM 'digital' port
On many CD-ROM drives, there is a 2-pin 'digital' port with pins labeled 'D'
and 'G'.  Is there a standard specification for this or does it vary across
model and manufacturer?

Thanks.



Re: CD-ROM 'digital' port

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'D'
across

D = data
G= ground

It's the same on all CD-ROM drives and it's called a SPDIF interface. It
transmits a digital audio signal. You can use it to decode the audio signal
by an external D/A converter. Al you need is and IEC958 decoder with a SPDIF
interface and a D/A converter.



Re: CD-ROM 'digital' port
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Apparently there's the occasional unit that uses the standard voltages
(0-1V, I think), while most will use 0-5V... so be ready for that.

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