Hi…
Would it be possible to use an Alesis AL1101 (datasheets here: http://www.alesis-semi.com/products.htm) to give a digi out for the SID?, is it a case of just running the audio out into the Alesis ADC, or is there other factors to consider? The datasheet for the eval board seems to make it look pretty easy to configure 
Best
Dan
Hey d2k
If you are going to make a digital out of the SID box, you need more than the A/D converter (AL1101), the output from that one only have what I call “intern SP/DIF” (master clock, L/R clock and data).
You need a intern to extern converter like CS8405A from
Cirrus, look at [url http://www.cirrus.com/en/products/pro/detail/P57.html
Hope that helps
MrMusicman
That sounds like a good idea!
How can we get it to work?
/P
Hey Perka…
I’m not to sure? ;p I’m hoping that ADC from Cirrus Mrmusicman mentioned will take care of it all and that it’s just a case of going in and out of it…
Best…
Dan
this look very interesting!
just for the sake, i wrote a mail to alesis semiconductor to see if it is possible to buy small quantity of those chips…
let’s see!
it could be interesting for me building a small sfpid/analog converter!!! 
Hello again.
Just to make things clear.
I have made a analog to SP/DIF converter, some years ago, here is part of the component used on it.
Cirrus Logic CS5330 18bit A/D converter
Cirrus Logic CS8402A SP/DIP Transmitter
OP275 Dual Opamp (input buffer)
some TTL Logic IC, some passive component, and a crystalgenerator for the selected samplefrequence
12.288MHz for 48KHz and 11.2896MHz for 44.1KHz.
The CS8402A is out of prodution but the CS8405A replace it (now goes up to 96KHz), the CS5330 are still made but can be replaced with a better one (CS5333 or the Alesis one or…)
The hard part to get is the crystalgennerator for 44.1Khz samplerate.
Hope that help a little more
Kent.
Hey Kent…
Could I, if poss, peep that schem/pcb of the design you done so i’ve summin to go on - not really a pcb deisgner tho i must say since being very new to all things EE…
Thanks again
Dan
ehi, MrMusicman
can you send us the schematics and the price of your unit?
About my old A/D converter.
It does not make sence to give my old schematic out, as some of the parts are not accessible any more.
I may be ready to make a new A/D (or A/D + D/A) converter, if someone will spare me (sponce?) the IC’s for it.
Kent
Hey MMM
I requested a cpl of samples of that cirrus chip u mentioned, I also have a cpl of them Alesis A/D and optogen too (see this post: http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=misc;action=display;num=1048154479) which was spose to be for a 16 chan a/d adat project…
If they come through and ya still think u could perhaps do summin with em I’ll send em ur way…
Nice1
DAn
Hey d2k
Let me know what happens.
I have been looking in at the Alesis ADAT IC and been thinking about making a ADAT-Analog and Analog-ADAT with then.
When I have some more time I will look in to it and find out what is necessary to make it.
Kent
I have made a analog to SP/DIF converter, some years ago, here is part of the component used on it.
Cirrus Logic CS5330 Â 18bit A/D converter
Cirrus Logic CS8402A Â SP/DIP Transmitter
OP275 Â Dual Opamp (input buffer)
some TTL Logic IC, some passive component, and a crystalgenerator for the selected samplefrequence
12.288MHz for 48KHz and 11.2896MHz for 44.1KHz.
The CS8402A is out of prodution but the CS8405A replace it (now goes up to 96KHz), the CS5330 are still made but can be replaced with a better one (CS5333 or the Alesis one or…)
The hard part to get is the crystalgennerator for 44.1Khz samplerate.
it seems that you can request free samples from cirrus logic for the chips you used (CD8405A instead of 02). so, can you please post me your schematic for you converter?? i’d like to try it!!
you can write pvt at m.bosi(at)inwind.it
thank you very much!
I would also like to build me a analog to digital converter.
I requested some samples of the CS8405A and CS5333, so if you could post the schematics or something that would be great!
/P
To all you requesting the schematic on my A/D converter.
I do not, sorry, have a schematic made on a computer, I made it in hand (a can’t find it). I may be able to find the PCB layout, but it will not be a big help. (different IC and connection compair the the IC you can get now)
I will make a new A/D converter (or A/D+D/A) when I have the time (I am busy making other stuff at the moment)
I also have an idea the make a ADAT interface, but again, I need time.
I Be Back
Kent
PS. May someone can find a place to get the crystalgeneretor needed for it (11.2896MHz (44.1KHz) and 12.288MHz (48KHz))
Hey Kent…
Ye, no rush on the digi out add-on, i’ll scout around for xtal gen u mentioned tho the a/d adat box would be great too, even better with s/mux so u can route more chans ;p I guess this is where the pic logic comes in. I’ve been chattin to matey who knows his stuff about this and has said he’ll look into it when time is available…wow, this together with that midi router u just whipped up and my i/o is sorted!!
Great stuff!
Dan
Hi…
Would it be possible to use an Alesis AL1101 (datasheets here: http://www.alesis-semi.com/products.htm) to give a digi out for the SID?, is it a case of just running the audio out into the Alesis ADC, or is there other factors to consider? The datasheet for the eval board seems to make it look pretty easy to configure
i received the reply from alesis:
****
I apologize for the delay in responding.
Prices are as follows:
n.1 - AL3201B $5.75/ea
n.1 - AL3101 $3.95/ea
(AL3102 ) $3.80/ea
n.1 - AL1101 $1.75/ea
n.1 - AL1201 $1.95/ea
n.1 - AL1402 $4.28/ea
n.1 - AL1401A $4.00/ea
The AL3201B is back ordered and I will not have available stock unitl late May.
The AL1201 is currently out of stock but I am expecting a delivery by the 15th
of April.
***