SPDIF Output from SAA7020, SAA7000 - Page 2 - diyAudio
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Old 24th November 2005, 09:56 AM   #11
drews is offline drews  Italy
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Join Date: Jan 2005
Location: Roma
Quote:
All CDM-1 CD-Player do not have digital output. Please help.
No, it's not true!!!!
There are many with CDM1 and digital output.
For example philips cd-304 mkII, Philips cd-960, Marantz cd-94.......

Bye
Andrea
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Old 24th November 2005, 01:14 PM   #12
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Anybody cna helpme out in the digital out?

how about if i modify the DAC?

What signal has to transported to the DAC?
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Old 24th November 2005, 02:00 PM   #13
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questions too general, sorry
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Old 24th November 2005, 05:35 PM   #14
Zoran is offline Zoran  Serbia
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Location: Belgrade
Those old chip set
SAA7000
SAA7010
SAA7020
usualy comes with CDM-0 transport
whthout a loader, but all mechanism goes in and out
during disc loading...
Like Philips CD303
and Revox B225 (maybe a CDM-1 i do not know exactly)
probably with 4x oversampling with SAA7020...
but type of the transport is from non importance for this topic...
The old chip SAA 7010 is predecessor of newer SAA 7210 from whom
we can get I2S bus.
But from SAA 7010 we coudnt because the cip is designed to drive
14bit DAC TDA1540 with different type of input digital signal
(check in data files...).
I think that SAA7010 runs at 4.xxx MHz clock, ws SAA7210 is higher...
You can try to drive the TDA1541A with SAA7010 by choosing the right format
input by option (see the TDA1541 datas...) and perform a better IV conversion,
or avoid oversampling (SAA7020) and leave the very unique DAC TDA 1540,
with of course better IV stage and changed decoupling capacitors...
But if Your intension was to use device just like exelent transport mechnism,
it is very hard to achieve this, mostly because of lack of the phisical space in those old machines.
That is peety because I was interested in that idea too...
But maybe some of DIYs can design the circuit for this that will be of great help
for many people i am positive about that...
By
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Old 24th November 2005, 08:02 PM   #15
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Join Date: Oct 2005
Quote:
Originally posted by Zoran
Those old chip set
SAA7000
SAA7010
SAA7020
usualy comes with CDM-0 transport
whthout a loader, but all mechanism goes in and out
during disc loading...
Like Philips CD303
and Revox B225 (maybe a CDM-1 i do not know exactly)
probably with 4x oversampling with SAA7020...
but type of the transport is from non importance for this topic...
The old chip SAA 7010 is predecessor of newer SAA 7210 from whom
we can get I2S bus.
But from SAA 7010 we coudnt because the cip is designed to drive
14bit DAC TDA1540 with different type of input digital signal
(check in data files...).
I think that SAA7010 runs at 4.xxx MHz clock, ws SAA7210 is higher...
You can try to drive the TDA1541A with SAA7010 by choosing the right format
input by option (see the TDA1541 datas...) and perform a better IV conversion,
or avoid oversampling (SAA7020) and leave the very unique DAC TDA 1540,
with of course better IV stage and changed decoupling capacitors...
But if Your intension was to use device just like exelent transport mechnism,
it is very hard to achieve this, mostly because of lack of the phisical space in those old machines.
That is peety because I was interested in that idea too...
But maybe some of DIYs can design the circuit for this that will be of great help
for many people i am positive about that...
By


Space will not be my problem, as i haev a new home for it, and i really want this CD-player to be a CD-Transport
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Old 25th November 2005, 10:35 AM   #16
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Location: .
Quote:
Originally posted by phimor


Hi rfbrw, I'm also interested in this, and was hoping for a report on how you got on?

philippe
Need to find time to layout a pcb and have one made. In order to fit in the CD104, it has to all SMD and the smaller stuff at that.

Quote:
Originally posted by drews
you can not add spdif or i2s from saa7020.
It would be illogical to attempt to add SPDIF at the output of the SAA7020. Error correction is incomplete at that point.
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Old 25th November 2005, 10:39 AM   #17
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Location: .
Quote:
Originally posted by lscangus

Space will not be my problem, as i haev a new home for it, and i really want this CD-player to be a CD-Transport

A new home for the transport or a new home for the dac?
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Old 25th November 2005, 01:02 PM   #18
pisky is offline pisky  Italy
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Join Date: Jun 2005
Location: island
Quote:
It would be illogical to attempt to add SPDIF at the output of the SAA7020. Error correction is incomplete at that point.
So you can try to add Spdif or i2s after saa7000, but I think is not possible.

For me for use these old cd-player for transport, you must completely redisegn a new board.
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Old 25th November 2005, 01:29 PM   #19
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Join Date: Oct 2005
I have got new home for the CD-Player. so is there any body who is goint o layout a new board and the circuit? As it will be inetresting to add a digital output baord to these old -hiquality CD-Player
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Old 25th November 2005, 03:48 PM   #20
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Join Date: Oct 2001
Location: .
Quote:
Originally posted by pisky


So you can try to add Spdif or i2s after saa7000, but I think is not possible.

For me for use these old cd-player for transport, you must completely redisegn a new board.
Aren't we the lucky ones. You're free to think it is impossible and I'm free to do it.
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