Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board - Page 30 - diyAudio
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Old 26th March 2013, 01:56 AM   #291
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Any progress lately? Been waiting for the module for a while
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Old 6th April 2013, 09:50 AM   #292
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I'm having trouble playing higher than 96K files with my system:

PC->WaveIO->Ian's I2S to PCM converter->PCM1704 DAC.

I have soldered Ian's board output directly to the input pins of the 1704.

When I play 176.4K or 192K I get basically noise with just a little music in the background. 96K and lower play fine.

Any ideas of what might be the problem?

Ian suggested the clocks on the Wave (22.xxx/24.xxx) may be a little on the slow side for the higher sampling rates, can anyone confirm this?
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Old 6th April 2013, 06:48 PM   #293
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TOTAL 88

TV Man x 2
merlin el mago
rtd
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vitalica
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andrea_mori x 5
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BDL
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regal x 2
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crobbins5421 X 2
marcus1 x1 (or 2)
casshan x 2
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jackw X 2
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Tony_T
Tubo x1
clivem x2
noizas x4
JoeyDD x2
skullaudio
dinos8746 x2
dvb-projekt
bisesik x2
guglielmope x1
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mhgawel x1
av-trouvaille x 1 (or 2)
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skippyboy x1
acccruz x1 (or 2)
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hksidney x 1
vts2006 x 3
JustBuildLspkAS.x3 &1 fifo kit finished for pcm1704 (ihave AD1862 ,pcm63,pcm1704)
54: PET-240 2 * TDA1541
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Old 7th April 2013, 09:36 PM   #294
JLOP is offline JLOP  France
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+1 for me, thanks
TOTAL 89

TV Man x 2
merlin el mago
rtd
jameshillj
erin x1 (or 2)
Nikola Krivorov x1
Rupor54
vitalica
analog_sa
andrea_mori x 5
dsavitsk
tagheuer
hirez69 x 2
ccliu x 2
BDL
cddumat
regal x 2
zoran
Jogi
Zen(zenelectro) x 2
Buzzforb
SPWON
crobbins5421 X 2
marcus1 x1 (or 2)
casshan x 2
Dweeb99 X 2
jackw X 2
kazap X 2
danzup x 3
Giordano x2
Tony_T
Tubo x1
clivem x2
noizas x4
JoeyDD x2
skullaudio
dinos8746 x2
dvb-projekt
bisesik x2
guglielmope x1
Valeriano x1
mhgawel x1
av-trouvaille x 1 (or 2)
iloveswan x1
dtses
Flyboi X1
Lil' Knight x1 (or 2)
skippyboy x1
acccruz x1 (or 2)
WhiteBull x1
hksidney x 1
vts2006 x 3
JustBuildLspkAS.x3 &1 fifo kit finished for pcm1704 (ihave AD1862 ,pcm63,pcm1704)
54: PET-240 2 * TDA1541
TonyB
damohpi x1
iloveswan x 1
Joseph K x 2
mefistofelez x2 (pcm63P)
JLOP x1 (WaveIO, AD1865 NOS SRPP)
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Old 8th April 2013, 01:07 AM   #295
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Quote:
Originally Posted by merlin el mago View Post
I'm having trouble playing higher than 96K files with my system:

PC->WaveIO->Ian's I2S to PCM converter->PCM1704 DAC.

I have soldered Ian's board output directly to the input pins of the 1704.

When I play 176.4K or 192K I get basically noise with just a little music in the background. 96K and lower play fine.

Any ideas of what might be the problem?

Ian suggested the clocks on the Wave (22.xxx/24.xxx) may be a little on the slow side for the higher sampling rates, can anyone confirm this?
Hi merlin el mago,

I'm gonna test it again at same case by a logic analyzer. A picture of your setup and system would be help.

Regards,

Ian
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Old 8th April 2013, 08:47 AM   #296
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Hi Ian,

As requested attached several pics

TIA
Felipe
Attached Images
File Type: jpg DSC00311.jpg (701.5 KB, 180 views)
File Type: jpg DSC00312.jpg (517.4 KB, 168 views)
File Type: jpg DSC00313.jpg (957.8 KB, 161 views)
File Type: jpg DSC00314.jpg (704.4 KB, 138 views)
File Type: jpg DSC00315.jpg (633.3 KB, 127 views)
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Old 8th April 2013, 10:07 AM   #297
vzs is online now vzs  Europe
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IMO you have some serious signal integrity issues - it's a miracle it works at all.

The re-clock FF on the I2S to PCM board is fast (maybe too fast?) - Potato logic - it has very fast rise times and this seems to require great care. I would even use the PH2.0 output only for testing and change to u-fl for the final setup.

As a last try - before making a small adapter board - I would try to run ground wires twisted near all lines not only the data line.

If you seriously want to use this PCM1704 evaluation board I would make a small adapter in your place - something similar to the attached sketch (excuse my Paint skills)

edit: same issue between WaveIO-I2S-to-PCM (good question how to connect them correctly) maybe remove the 7pin PH2.0 from the converter input and try solder u-fl connectors
Attached Images
File Type: png PCM1704_adapter.png (2.0 KB, 72 views)

Last edited by vzs; 8th April 2013 at 10:24 AM.
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Old 8th April 2013, 10:15 AM   #298
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Do you refer to twist with gnd LLLR & CLK wires?
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Old 8th April 2013, 10:17 AM   #299
vzs is online now vzs  Europe
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Quote:
Originally Posted by merlin el mago View Post
Do you refer to twist with gnd LLLR & CLK wires?
Yes... but please consider the adapter board. Also see later-edit note about input connector.
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Old 8th April 2013, 10:23 AM   #300
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Do you know where can I buy the adapter board with U.FL connectors?
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