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Old 17th June 2006, 10:41 PM   #1
borges is offline borges  Norway
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Default CD transport and MCLK

I'm thinking about making a small production series of my DAC, embedding it in a box with a CD transport as well.

The CD-Pro2 looks like it is getting good reviews. Is it easy to get by this (or similar drives)?

Perhaps more importantly, I plan to generate MCLK on my DAC board and send it down to the transport. But some documentation I found on the CD-Pro2 states that the MCLK is an output signal. So, what setup is recomended when I want MCLK to be an input to the CD drive?

I am completely new to working with cd transports but know both mechanics, I2S and MCU programming. Hints and tips are much welcome!

Cheers,

BÝrge
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Old 18th June 2006, 01:03 AM   #2
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Default Re: CD transport and MCLK

Quote:
Originally posted by borges

Perhaps more importantly, I plan to generate MCLK on my DAC board and send it down to the transport. But some documentation I found on the CD-Pro2 states that the MCLK is an output signal. So, what setup is recomended when I want MCLK to be an input to the CD drive?

You would have to remove the onboard oscillator/resonator.
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Old 19th June 2006, 06:37 PM   #3
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Default Re: CD transport and MCLK

Quote:
Originally posted by borges

Perhaps more importantly, I plan to generate MCLK on my DAC board and send it down to the transport. But some documentation I found on the CD-Pro2 states that the MCLK is an output signal. So, what setup is recomended when I want MCLK to be an input to the CD drive?

Do you plan to create an open system, i.e. one that will work with other devices that have a reference clock output or a closed system like the Sony Twinlink?
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Old 20th June 2006, 09:08 AM   #4
borges is offline borges  Norway
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Join Date: Dec 2003
Location: Oslo, Norway
It is a closed system, I guess, because this has to do with the internal wiring inside a CD player.

I plan to use Guido's clock circuit on a board where I'm in charge of power supply, decoupling, and ground layout. Not the oscillator on the CD transport. I'm looking at the L1210/65. I guess that supplying the clock from outside should be doable, I just have to mod each one.

Anyone having experience modding this transport?


Cheers,
BÝrge
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