Analogue to SPDIF - converter project opened

Samir · Jul 4, 2004, 01:13 AM

That's damn too bad!

Could you specify in details what exactly you did? There's another test you might try, direct connection (no ressistors) of two pin pairs: 33 -> 23 and 35- > 25... Both at the same time. But this could have unknown consequences on your card, so be careful. Have you tried pin 25?

Thanks for trying!

**dj_stick** · Jul 4, 2004, 01:28 AM

Quote:

Originally posted by Samir
pzmt:

It has to be truth what you're thinking, one way or another... Now i wish if only Eugene could review this thread soon, and help us unreveal some stupid concepts that has been made secrets by creative (creative? ). Anyways, WHERE IS Eugene?!? Anybody heard from him lately? I hope he's alive & well & doing some kick-ass kX programming...

Eugene is still around - just doesn;t have the time to post on the forum often

Quenotte · Jul 4, 2004, 02:58 PM

Quote:

Originally posted by Samir
That's damn too bad! Could you specify in details what exactly you did? There's another test you might try, direct connection (no ressistors) of two pin pairs: 33 -> 23 and 35- > 25... Both at the same time. But this could have unknown consequences on your card, so be careful. Have you tried pin 25?

Thanks for trying!

The trouble is that I don't know what kx drivers show in about window when an audigy2 drive is present... I didn't notice any audigy2 drive related stuff...

For audigy 2, I have 2 cards... The first produce some clic clic and creative send me another one that works

So I have one card for testing purpose

And the card seems to be quite robust :P

Code:

 _ _ _
_ _ _ _   On pin 15 there is a clock signal

  _   _   _   _
_| |_| |_| |_| |_   On pin 17 there is another clock signal (squarred)


There is the same kind of signal on pin 27,29 and 31 but with half the frequency on pin 31. I suppose there is some spdif stuff here

Quenotte · Jul 4, 2004, 03:07 PM

I think I will put also my Live 5.1 and try to compare the signals on AUD_EXT and AD_EXT

Quenotte · Jul 4, 2004, 04:44 PM

Code:

                      +5V    1  >o     2    -
                      GND    3   o o   4    GND
                SPDIF0 IN    5   o o   6    GND
                      GND    7   o o   8    GND
               SPDIF0 OUT    9   o     10   -
                        -   11         12   -
                AC97 CLK    13   o o   14   GND
              9.6kHz CLK    15   o o   16   GND
               60kHz CLK    17   o o   18   GND
            I2SIn (Aux2)    19   o o   20   GND
   I2SIn (Line-in2/Mic2)    21   o o   22   GND
                            23   o o   24   
                            25   o o   26   GND
             SPDIF FRONT    27   o o   28   GND
             SPDIF CE/SW    29   o o   30   GND
             SPDIF REAR     31   o o   32   GND
                            33   o o   34   
                            35   o o   36    
                            37   o o   38   GND
                            39   o     40   -


 _ _ _
_ _ _ _   On pin 15 there is a clock signal (9.6kHz)

  _   _   _   _
_| |_| |_| |_| |_   On pin 17 there is another clock signal (squarred 60kHz)

Quenotte · Jul 4, 2004, 05:12 PM

Quote:

Originally posted by Samir
That's damn too bad! Could you specify in details what exactly you did? There's another test you might try, direct connection (no ressistors) of two pin pairs: 33 -> 23 and 35- > 25... Both at the same time. But this could have unknown consequences on your card, so be careful. Have you tried pin 25?

Thanks for trying!

Pin 33->23 and 35->25

This seems to WORK

kxdrivers indicate:

DB Name:LiveBay0

I will try to isolate pin 23/25

creative drivers (443 one's) detect also the drivebay

Spdif in and headphone tab are now available in audiohq device control

Line in2/mic is also available in mixer

Quenotte · Jul 4, 2004, 06:39 PM

33->23 isn't needed to detect the bay...

It works with only 35->25...

There is 5V on pin 35...

pin 1->25 doesn't work

So pin 35->25 is the correct solution

I tried a 4.7kohm resistor between pin 35 and 25 and it doesn't work... With 1 ohm resistor it works

I have found other pins

pin 19 I2SIn (Aux2)
pin 21 I2SIn (LineIn2/Mic2)

I have put a 1.2kohm resistor between pin 35 and 25 and it works perfectly

I prefer that than a strap...

**dj_stick** · Jul 5, 2004, 12:00 AM

once you have fully mapped as much as possible, i will put the pinout on the kX knowledgebase with your permission

Quenotte · Jul 5, 2004, 01:01 AM

Quote:

Originally posted by dj_stick
once you have fully mapped as much as possible, i will put the pinout on the kX knowledgebase with your permission

I think I can't go any further...

so..

I suspect pin 37 and 39 to be midi related but I can't test that

Samir · Jul 5, 2004, 02:16 AM

[COLOR=orange]GREAT GREAT GREAT, Quenotte!!!

[/COLOR]

Thanks for trynig!!! Seems we got it, finally!!!

35 -> 25 should be almost similar as +5V -> 4.7kOhm -> 35!

Look at this TRACE DIAGRAM...

35 -> 23 you get 'LiveBay1' instead of 'LiveBay0'! Please check. It think we need to get 'LiveBay2'...
Try 35 -> (23 -> 25)...

FINALLY here's full AD_EXT pinout:

Code:

                               +5V    1  >o     2    -
                               GND    3   o o   4    GND
                         SPDIF0 IN    5   o o   6    GND
                               GND    7   o o   8    GND
                        SPDIF0 OUT    9   o     10   -
                                 -   11         12   -
          P16VCLK 24.576 MHz clock   13   o o   14   GND
                     I2S FrameSync   15   o o   16   GND
                      I2S BitClock   17   o o   18   GND
          I2S input to P16V (Aux2)   19   o o   20   GND
 I2S input to P16V (Line-in2/Mic2)   21   o o   22   GND
                GPO1 (GP output 1)   23   o o   24   GPO2 (GP output 2)
                GPO0 (GP output 0)   25   o o   26   GND
                        SPDIF3 OUT   27   o o   28   GND
                        SPDIF1 OUT   29   o o   30   GND
                        SPDIF2 OUT   31   o o   32   GND
                 GPI1 (GP input 1)   33   o o   34   to TAD connector!
                 GPI0 (GP input 0)   35   o o   36   to pin 10 @ J1! (white @ ZS model)
                   UART (MIDI) OUT   37   o o   38   GND
                    UART (MIDI) IN   39   o     40   -

Hej, take a look at the diagram, ANYBODY knows what A253 ic could be???
And, Quenotte, please check pin 17 ferquency if you have oscillograph...
Also, pin 24 remain unknown. Could you test if it is possible SPDIF input? Try connecting 9 -> 24 & see what happends... YOU HAVE MY DEEPEST GRATITUDE!!!

dj_stick, please don't put it in knowledgebase yet, we have to make few additional tests... Wait for a day or two...

Huh, i'm so happy about this...

**dj_stick** · Jul 5, 2004, 02:18 AM

i will wait until you have finalised this, and when i do post it i will post a disclaimer regarding safety and warranties etc

Quenotte · Jul 5, 2004, 01:00 PM

Quote:

Originally posted by Samir
[COLOR=orange]GREAT GREAT GREAT, Quenotte!!! [/COLOR]

Thanks for trynig!!! Seems we got it, finally!!!

35 -> 25 should be almost similar as +5V -> 4.7kOhm -> 25!

Look at this TRACE DIAGRAM...

35 -> 23 you get 'LiveBay1' instead of 'LiveBay0'! Please check. It think we need to get 'LiveBay2'...
Try 35 -> (23 -> 25)...

FINALLY here's full AD_EXT pinout:

Code:

+5V 1 >o 2 - GND 3 o o 4 GND SPDIF0 IN 5 o o 6 GND GND 7 o o 8 GND SPDIF0 OUT 9 o 10 - - 11 12 - I2S BitClock 13 o o 14 GND I2S FrameSync 15 o o 16 GND P16VCLK 24.576 MHz clock 17 o o 18 GND I2S input to P16V (Aux2) 19 o o 20 GND I2S input to P16V (Line-in2/Mic2) 21 o o 22 GND GPI0 (GP input 0) 23 o o 24 GP in/out? GPI1 (GP input 1) 25 o o 26 GND SPDIF3 OUT 27 o o 28 GND SPDIF1 OUT 29 o o 30 GND SPDIF2 OUT 31 o o 32 GND 3.4V to A2 Drive? 33 o o 34 to TAD connector! 3.4V to A2 Drive? 35 o o 36 to pin 10 @ J1! UART (MIDI) OUT 37 o o 38 GND UART (MIDI) IN 39 o 40 -

Hej, take a look at the diagram, ANYBODY knows what A253 ic could be???
And, Quenotte, please check pin 17 ferquency if you have oscillograph...
Also, pin 24 remain unknown. Could you test if it is possible SPDIF input? Try connecting 9 -> 24 & see what happends... YOU HAVE MY DEEPEST GRATITUDE!!!

dj_stick, please don't put it in knowledgebase yet, we have to make few additional tests... Wait for a day or two...

Huh, i'm so happy about this...

I have compared Live 5.1 AUD_EXT to audigy2 AD_EXT pins

I have the same signal with the same frequency (2.5MHz) for pin 13 on audigy 2 and AC97CLK (pin4) on Live 5.1...

audigy2 AD_EXT pins:
2.5MHz sinus(0-3.4V) AC97 CLK 13 o o 14 GND
9.6kHz CLK 15 o o 16 GND
60kHz CLK 17 o o 18 GND

35->23 LiveBay1
35->24 LiveBay1 db8
35->25 LiveBay0

With creative drivers for audigy2, Audigy drive stuff (like spdif in and headphone control in audiohq or mic2/Linein2) don't appear for LiveBay1 and LiveBay1 db8. They appear only for LiveBay0...

For my Live 5.1 (SB0060) kx drivers indicate LiveBay1 with the two 4.7kohm resistors

So I think LiveBay0 is the good one for audigy2

On the other hand, Aux2 doesn't appear in creative mixer... And we don't know what the pin 33 does...

TravelRec. · Jul 5, 2004, 02:05 PM

Hi Quenotte!

First let me thank you also for the great work you have done together with samir! My question to you: what is the method you use to measure the frequencies? Are you using a frequency counter or an oscillograph? I´m not sure whether your readings are correct. Following the description of AUD_EXT documentation pin 13 on Live and Audigy1 is "General Purpose out 0" (signal on it is unknown to me yet, will check that soon!). Pin 15 is "SPDIF in 1" and so there is NO signal on it. If you assign some external SPDIF sources there, then the frequency is between 4 and 12 Mhz (MEGAHERTZ, not kHz!). Pin 17 is "SPDIF 0 out", there is the selectable 44.1 - 96 kHz SPDIF signal output, so the frequency there is between 5 and 12 MHz, I don´t know, why your readings are so different from mine - do you have the right AUD_EXT pin assign diagram with the correct pin counting??? It´s only a question.

Will return with actual readings...

TravelRec.

Quenotte · Jul 5, 2004, 03:02 PM

Quote:

Originally posted by TravelRec.
Hi Quenotte!

First let me thank you also for the great work you have done together with samir! My question to you: what is the method you use to measure the frequencies? Are you using a frequency counter or an oscillograph? I´m not sure whether your readings are correct. Following the description of AUD_EXT documentation pin 13 on Live and Audigy1 is "General Purpose out 0" (signal on it is unknown to me yet, will check that soon!). Pin 15 is "SPDIF in 1" and so there is NO signal on it. If you assign some external SPDIF sources there, then the frequency is between 4 and 12 Mhz (MEGAHERTZ, not kHz!). Pin 17 is "SPDIF 0 out", there is the selectable 44.1 - 96 kHz SPDIF signal output, so the frequency there is between 5 and 12 MHz, I don´t know, why your readings are so different from mine - do you have the right AUD_EXT pin assign diagram with the correct pin counting??? It´s only a question.

Will return with actual readings...

TravelRec.

I have edited my post

The pins I mentionned are for audigy 2

2.5MHz sinus(0-3.4V) 13 o o 14 GND
9.6kHz CLK 15 o o 16 GND
60kHz CLK 17 o o 18 GND

I'm not 100% sure for the frequency since my oscillo is quite old

I have exactly the same frequency of 2.5MHz for pin4 (AC97CLK) on my live 5.1 (SB0060)

So I think that audigy2 pin 13 is AC97CLK

Samir · Jul 5, 2004, 05:06 PM

Quote:

35->23 Livebay1
35->24 Livebay1 db8
35->25 Livebay0
With creative drivers for audigy2, Audigy drive stuff (like spdif in and headphone control in audiohq or mic2/Linein2) don't appear for Livebay1 and Livebay1 db8. They appear only for Liveabay0...

Funny... What the heck is 'LiveBay1 db8'??? Have you tried 35 --> (23 --> 25). That means 35 to BOTH 23 & 25 at the same time. Pin 33 looks same as 35 on diagram but 33 --> 25 (or 24) does not work?!?

Quote:

TravelRec:
Are you using a frequency counter or an oscillograph? I´m not sure whether your readings are correct.
Quenotte:
I have edited my post

I'm not 100% sure for the frequency since my oscillo is quite old

Well, pins 13, 15, 17 @ Audigy2's AD_EXT should be as follows:

13 - I2S BitClock
15 - I2S FrameSync
17 - P16VCLK (should be 24.576 MHz)

I still have no access to measuring equipment, so it's up to you guys to measure these...
But the question that remains; how come 13 & 15 HAS ANY SIGNAL because they SHOULD BE INPUTS?

Pin 17 (not 13!) HAS to be same or similar to pin4 (AC97CLK) on Live! cards!!!

TravelRec. · Jul 5, 2004, 05:09 PM

Ahhh....

I understand. Of course I think you mean 25 Mhz instead 2.5 Mhz on Pin 17 (wrong multiplicator) since the AC97CLK is around 25 Mhz (24,5 blabla). And this is not sine but square wave (your osci may draw a sine, dosen´t matter

). Pin15 should be 48 kHz or 96 kHz and determines the I2S Left/Right FrameSync (same value like sample-rate). On Pin 13 should be ~ 3 to 6 Mhz which determines the I2S bitclock (64x FrameSync!). That may help you to find out more.

BTW I´ve posted different screenshots from SPDIF signals:

44.1kHz - 0.5µs/DIV
44.1kHz - 5µs/DIV
48kHz - 0.2µs/DIV
48kHz - 10µs/DIV

Greetings!

TravelRec.

TravelRec. · Jul 5, 2004, 05:22 PM

Quote:

Originally posted by Samir

But the question that remains; how come 13 & 15 HAS ANY SIGNAL because they SHOULD BE INPUTS?

Pin 17 (not 13!) HAS to be same or similar to pin4 (AC97CLK) on Live! cards!!!

[/B]

If there are signals (and like you posted in your diagram) then they are definately OUTPUTS!!! And I think, it´s the better way to provide the I2S clocks from the card instead of generating them over externals. It´s more flexible if the card is able to generate different sample rates over I2S.

Greetings!

TravelRec.

Quenotte · Jul 5, 2004, 06:29 PM

Quote:

Originally posted by Samir
Funny... What the heck is 'LiveBay1 db8'??? Have you tried 35 --> (23 --> 25). That means 35 to BOTH 23 & 25 at the same time. Pin 33 looks same as 35 on diagram but 33 --> 25 (or 24) does not work?!?

35->23->25 kxdrivers indicate LiveBay1
35->24->25 kxdrivers indicate LiveBay1 db8
35->23->24->25 kxdrivers indicate LiveBay1 db8

33->2X doesn't seem to work...

Quote:

Originally posted by Samir
Well, pins 13, 15, 17 @ Audigy2's AD_EXT should be as follows:

13 - I2S BitClock
15 - I2S FrameSync
17 - P16VCLK (should be 24.576 MHz)

I still have no access to measuring equipment, so it's up to you guys to measure these...
But the question that remains; how come 13 & 15 HAS ANY SIGNAL because they SHOULD BE INPUTS?
Pin 17 (not 13!) HAS to be same or similar to pin4 (AC97CLK) on Live! cards!!!

I have the same kind of signal on audigy2 pin13 and on Live 5.1 pin4 (AC97CLK) same 2.5MHz sinus signal on my old oscillo

Quenotte · Jul 5, 2004, 06:42 PM

Quote:

Originally posted by TravelRec.
Ahhh....

I understand. Of course I think you mean 25 Mhz instead 2.5 Mhz on Pin 17 (wrong multiplicator) since the AC97CLK is around 25 Mhz (24,5 blabla). And this is not sine but square wave (your osci may draw a sine, dosen´t matter ). Pin15 should be 48 kHz or 96 kHz and determines the I2S Left/Right FrameSync (same value like sample-rate). On Pin 13 should be ~ 3 to 6 Mhz which determines the I2S bitclock (64x FrameSync!). That may help you to find out more.

BTW I´ve posted different screenshots from SPDIF signals:

44.1kHz - 0.5µs/DIV
44.1kHz - 5µs/DIV
48kHz - 0.2µs/DIV
48kHz - 10µs/DIV

Greetings!

TravelRec.

Pin 15 and 17 seems to be squarred and pin 13 sin...

5/(10*0.2E-6)=2.5MHz...

And I mean 2.5MHz on my oscillo for pin 13... But it's a very old one

But I have the same frequency ans kind of signal on live 5.1 pin4 and on audigy2 pin13

TravelRec. · Jul 5, 2004, 07:04 PM

Quote:

Originally posted by Quenotte
Pin 15 and 17 seems to be squarred and pin 13 sin...

5/(10*0.2E-6)=2.5MHz...

And I mean 2.5MHz on my oscillo for pin 13... But it's a very old one

But I have the same frequency ans kind of signal on live 5.1 pin4 and on audigy2 pin13

Yes, I understand - I only want to say, what it should be, if your osci says 2.5 MHz at Live! and Audigy2 then it´s the same signal - like I´ve tested it´s 25 Mhz - no more or less. The sine wave is also a square, the bandwith limit of your osci and the capacity of your measuring wire make the square corners round, so it seems to be a sine - it´s the same here...

Since the signals on 15 and 17 are much slower, the square is much more accurate drawn.

Greetings!

TravelRec.

Quenotte · Jul 5, 2004, 07:21 PM

Quote:

Originally posted by TravelRec.
Yes, I understand - I only want to say, what it should be, if your osci says 2.5 MHz at Live! and Audigy2 then it´s the same signal - like I´ve tested it´s 25 Mhz - no more or less. The sine wave is also a square, the bandwith limit of your osci and the capacity of your measuring wire make the square corners round, so it seems to be a sine - it´s the same here... Since the signals on 15 and 17 are much slower, the square is much more accurate drawn.

Greetings!

TravelRec.

ok

The osci is very old so...

Maybe the 35MHz bandwith is out of order

Samir · Jul 6, 2004, 02:05 AM

Hej, Quenotte, can you verify which of the 23, 24 ,25, 33 & 35 pins HAS ANY signal when measured alone? We need to be 100% sure which are inputs & which are outputs...

Quote:

TravelRec:
If there are signals (and like you posted in your diagram) then they are definately OUTPUTS!!! And I think, it´s the better way to provide the I2S clocks from the card instead of generating them over externals. It´s more flexible if the card is able to generate different sample rates over I2S.

Indeed, that's true. So, how would 'Analog to I2S circuit' look like, in a case of Audigy2?

Thank you, people!

TravelRec. · Jul 6, 2004, 07:58 AM

Quote:

Indeed, that's true. So, how would 'Analog to I2S circuit' look like, in a case of Audigy2?

So... the cool thing is that the only difference is the presence or absence of a resistor in the ADC circuit. It exists for AUD_EXT and exists not for AD_EXT. For using with external sample rate converter to get more SPDIFs only some pins of SRC have to be connected to GND or VCC - no dramatic modifications. Cool, isn´t it? The same PCB can be used for both applications. I´ll make it public in the next few days, if AD_EXT is fully researched.

Greetings!

TravelRec.

Samir · Jul 6, 2004, 01:25 PM

Good, TravelRec...

I think AD_EXT is researched enough for implementing Analogue to I2S converters... We'll make something out of it...

I made some mistakes while tracing Audigy2 pins... Pins 17 & 13 should switch functions.

Quenotte:

You were right about pin 13 @ Audigy2 has same signal as pin 4 @ Live! Please edit your post, one where you quoted me, remove that wrong pinout...
Another thing; pins 33 & 35 are GP inputs, not outputs!!! Normally, pins 23, 24, 25 are GP outputs. Seems i was too tired while doing this.

Updated diagram & pinouts...

TravelRec, any news about what A253 ic could be???

Quenotte · Jul 6, 2004, 06:57 PM

Quote:

Originally posted by Samir
Good, TravelRec...

I think AD_EXT is researched enough for implementing Analogue to I2S converters... We'll make something out of it...

I made some mistakes while tracing Audigy2 pins... Pins 17 & 13 should switch functions.

Quenotte:

You were right about pin 13 @ Audigy2 has same signal as pin 4 @ Live! Please edit your post, one where you quoted me, remove that wrong pinout...
Another thing; pins 33 & 35 are GP inputs, not outputs!!! Normally, pins 23, 24, 25 are GP outputs. Seems i was too tired while doing this. Updated diagram & pinouts...

TravelRec, any news about what A253 ic could be???

input with 3.4V pot?

Samir · Jul 6, 2004, 07:09 PM

Quote:

Originally posted by Quenotte
input with 3.4V pot?

What pin(s) you're referencing to? There are no 3.4V outputs, that was my mistake... 33 & 35 are just plain old inputs (AD_EXT direct to 10K2 chip)... See this updated diagram...

imgoof02 · Jul 6, 2004, 11:36 PM

yall guys are awesome. i just got my old audigy external drive to work on my audigy2.

i used to only have my opt/coax in and outs working in the beginning of the yr.... but after this info, i finally have the 2 ADCs & DAC working now as well. flawlessly. (well at first i was disappointed today when it didnt work... but then i realized i had my spdif out setting on 48... but once i changed it to 96, its perfect)

im gonna play around with it more today to see what else il figure out.

ive been fooling around with this for many many months, and knew a lot about the specs/etc.... but didnt ever connect TOO much for risk of ruining something.

il keep yall posted if there are any new discoveries

TravelRec. · Jul 7, 2004, 11:12 AM

Hi all!

Have running now all possible digital input on Audigy1 card - 12 mono or 6 stereo digital in over 3x analog to SPDIF converter / 1x SampleRateConverter to I2S / 1x analog to I2S converter. Here is a screenshot of all inputs running without applied signal (watch the peakmeters S/N), in the background the DSP with out configuration:

Screenshot

And some news: www.electricstart.de is updated with some pictures of the prototype

, so this may be a sign of what is possible with easiest things...

Enjoy!

TravelRec.

P.S.: I´m now in the hot test phase with all circuits - the full PCB-layouts and comments will follow. Your comments are welcome

!

Samir · Jul 7, 2004, 02:52 PM

Quote:

Originally posted by imgoof02:
yall guys are awesome. i just got my old audigy external drive to work on my audigy2.

i used to only have my opt/coax in and outs working in the beginning of the yr.... but after this info, i finally have the 2 ADCs & DAC working now as well. flawlessly. (well at first i was disappointed today when it didnt work... but then i realized i had my spdif out setting on 48... but once i changed it to 96, its perfect)

I'm glad it worked... So say, you managed to get I2S inputs to work flawlessly!?! Good, have you tried any 24bit/96kHz recording... I'm interesed what results you may get, since two I2S inputs @ Aufigy2 card (Aux2 & LineIn2) goes trouhg P16V chip which should be 24bit/96kHz capable. Have you tried MIDI input/output? Does your Audigy drive have any IR stuff attached? It would be neat to check everything so we can be 1000% sure we got correct pinout.

Thank you!

Samir · Jul 7, 2004, 03:03 PM

Quote:

Originally posted by TravelRec.
P.S.: I´m now in the hot test phase with all circuits - the full PCB-layouts and comments will follow. Your comments are welcome !

Hej, TravelRec, i was thinink about Analogue to I2S converters for Audigy2 cards... Since Audigy2 I2S inputs are 24bit/96kHz capable, it would be really great f you could modify your converter's design so they can support 24/96... Is it only ADC related modification?

Good luck!

Jul 4, 2004, 01:13 AM	#121
Samir kX Lover Join Date: Jan 2003 Posts: 520 Rep Power: 0	That's damn too bad! Could you specify in details what exactly you did? There's another test you might try, direct connection (no ressistors) of two pin pairs: 33 -> 23 and 35- > 25... Both at the same time. But this could have unknown consequences on your card, so be careful. Have you tried pin 25? Thanks for trying! __________________ MU3NKA 3A HAPO6!

Jul 4, 2004, 06:39 PM	#127
Quenotte DriverHeaven Newbie Join Date: Apr 2003 Posts: 16 Rep Power: 0	33->23 isn't needed to detect the bay... It works with only 35->25... There is 5V on pin 35... pin 1->25 doesn't work So pin 35->25 is the correct solution I tried a 4.7kohm resistor between pin 35 and 25 and it doesn't work... With 1 ohm resistor it works I have found other pins pin 19 I2SIn (Aux2) pin 21 I2SIn (LineIn2/Mic2) I have put a 1.2kohm resistor between pin 35 and 25 and it works perfectly I prefer that than a strap... Last edited by Quenotte; Jul 4, 2004 at 07:23 PM.

Jul 5, 2004, 02:16 AM	#130
Samir kX Lover Join Date: Jan 2003 Posts: 520 Rep Power: 0	[COLOR=orange]GREAT GREAT GREAT, Quenotte!!! [/COLOR] Thanks for trynig!!! Seems we got it, finally!!! 35 -> 25 should be almost similar as +5V -> 4.7kOhm -> 35! Look at this TRACE DIAGRAM... 35 -> 23 you get 'LiveBay1' instead of 'LiveBay0'! Please check. It think we need to get 'LiveBay2'... Try 35 -> (23 -> 25)... FINALLY here's full AD_EXT pinout: Code: +5V 1 >o 2 - GND 3 o o 4 GND SPDIF0 IN 5 o o 6 GND GND 7 o o 8 GND SPDIF0 OUT 9 o 10 - - 11 12 - P16VCLK 24.576 MHz clock 13 o o 14 GND I2S FrameSync 15 o o 16 GND I2S BitClock 17 o o 18 GND I2S input to P16V (Aux2) 19 o o 20 GND I2S input to P16V (Line-in2/Mic2) 21 o o 22 GND GPO1 (GP output 1) 23 o o 24 GPO2 (GP output 2) GPO0 (GP output 0) 25 o o 26 GND SPDIF3 OUT 27 o o 28 GND SPDIF1 OUT 29 o o 30 GND SPDIF2 OUT 31 o o 32 GND GPI1 (GP input 1) 33 o o 34 to TAD connector! GPI0 (GP input 0) 35 o o 36 to pin 10 @ J1! (white @ ZS model) UART (MIDI) OUT 37 o o 38 GND UART (MIDI) IN 39 o 40 - Hej, take a look at the diagram, ANYBODY knows what A253 ic could be??? And, Quenotte, please check pin 17 ferquency if you have oscillograph... Also, pin 24 remain unknown. Could you test if it is possible SPDIF input? Try connecting 9 -> 24 & see what happends... YOU HAVE MY DEEPEST GRATITUDE!!! dj_stick, please don't put it in knowledgebase yet, we have to make few additional tests... Wait for a day or two... Huh, i'm so happy about this... __________________ MU3NKA 3A HAPO6! Last edited by Samir; Feb 10, 2005 at 03:57 AM.

Jul 5, 2004, 02:05 PM	Thread Starter #133
TravelRec. Alternative Audioproductions Join Date: Sep 2003 Location: Germany / Sachsen-Anhalt Posts: 1,710 Rep Power: 56	Hi Quenotte! First let me thank you also for the great work you have done together with samir! My question to you: what is the method you use to measure the frequencies? Are you using a frequency counter or an oscillograph? I´m not sure whether your readings are correct. Following the description of AUD_EXT documentation pin 13 on Live and Audigy1 is "General Purpose out 0" (signal on it is unknown to me yet, will check that soon!). Pin 15 is "SPDIF in 1" and so there is NO signal on it. If you assign some external SPDIF sources there, then the frequency is between 4 and 12 Mhz (MEGAHERTZ, not kHz!). Pin 17 is "SPDIF 0 out", there is the selectable 44.1 - 96 kHz SPDIF signal output, so the frequency there is between 5 and 12 MHz, I don´t know, why your readings are so different from mine - do you have the right AUD_EXT pin assign diagram with the correct pin counting??? It´s only a question. Will return with actual readings... TravelRec. __________________ Always take a look behind.

Jul 5, 2004, 05:09 PM	Thread Starter #136
TravelRec. Alternative Audioproductions Join Date: Sep 2003 Location: Germany / Sachsen-Anhalt Posts: 1,710 Rep Power: 56	Ahhh.... I understand. Of course I think you mean 25 Mhz instead 2.5 Mhz on Pin 17 (wrong multiplicator) since the AC97CLK is around 25 Mhz (24,5 blabla). And this is not sine but square wave (your osci may draw a sine, dosen´t matter ). Pin15 should be 48 kHz or 96 kHz and determines the I2S Left/Right FrameSync (same value like sample-rate). On Pin 13 should be ~ 3 to 6 Mhz which determines the I2S bitclock (64x FrameSync!). That may help you to find out more. BTW I´ve posted different screenshots from SPDIF signals: 44.1kHz - 0.5µs/DIV 44.1kHz - 5µs/DIV 48kHz - 0.2µs/DIV 48kHz - 10µs/DIV Greetings! TravelRec. __________________ Always take a look behind. Last edited by TravelRec.; Jul 5, 2004 at 05:23 PM.

Jul 4, 2004, 03:07 PM	#124
Quenotte DriverHeaven Newbie Join Date: Apr 2003 Posts: 16 Rep Power: 0	I think I will put also my Live 5.1 and try to compare the signals on AUD_EXT and AD_EXT

Jul 6, 2004, 01:25 PM	#144
Samir kX Lover Join Date: Jan 2003 Posts: 520 Rep Power: 0	Good, TravelRec... I think AD_EXT is researched enough for implementing Analogue to I2S converters... We'll make something out of it... I made some mistakes while tracing Audigy2 pins... Pins 17 & 13 should switch functions. Quenotte: You were right about pin 13 @ Audigy2 has same signal as pin 4 @ Live! Please edit your post, one where you quoted me, remove that wrong pinout... Another thing; pins 33 & 35 are GP inputs, not outputs!!! Normally, pins 23, 24, 25 are GP outputs. Seems i was too tired while doing this. Updated diagram & pinouts... TravelRec, any news about what A253 ic could be??? __________________ MU3NKA 3A HAPO6! Last edited by Samir; Jul 6, 2004 at 04:20 PM.

Jul 6, 2004, 11:36 PM	#147
imgoof02 the other white meat Join Date: Mar 2004 Location: New Orleans, LA Posts: 5 Rep Power: 0	yall guys are awesome. i just got my old audigy external drive to work on my audigy2. i used to only have my opt/coax in and outs working in the beginning of the yr.... but after this info, i finally have the 2 ADCs & DAC working now as well. flawlessly. (well at first i was disappointed today when it didnt work... but then i realized i had my spdif out setting on 48... but once i changed it to 96, its perfect) im gonna play around with it more today to see what else il figure out. ive been fooling around with this for many many months, and knew a lot about the specs/etc.... but didnt ever connect TOO much for risk of ruining something. il keep yall posted if there are any new discoveries

Jul 7, 2004, 11:12 AM	Thread Starter #148
TravelRec. Alternative Audioproductions Join Date: Sep 2003 Location: Germany / Sachsen-Anhalt Posts: 1,710 Rep Power: 56	Hi all! Have running now all possible digital input on Audigy1 card - 12 mono or 6 stereo digital in over 3x analog to SPDIF converter / 1x SampleRateConverter to I2S / 1x analog to I2S converter. Here is a screenshot of all inputs running without applied signal (watch the peakmeters S/N), in the background the DSP with out configuration: Screenshot And some news: www.electricstart.de is updated with some pictures of the prototype , so this may be a sign of what is possible with easiest things... Enjoy! TravelRec. P.S.: I´m now in the hot test phase with all circuits - the full PCB-layouts and comments will follow. Your comments are welcome ! __________________ Always take a look behind.