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Ian asynchronous I2S and S/PDIF FIFO KIT group buy

New Waiting List Update

N1 cddumat 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface Board
N2 spm I2S FIFO,Dual XO Clock board,S/PDIF Interface Board,2x SMT U.FL,8x 6",4x 12”,I2S backdoor KIT, 2xXO Adapters lot of 5,2xBIII adapters,2x SMT connector package
N3. Regland - 1*I2S FIFO Kit, 1*Dual XO Clock Board, 1*S/PDIF Interface Board, 2*BIII adapter
N4. AR2 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 2 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 2x Additional BIII adapters PCB, 2x SMT connector package for BIII adapters
N5. vertigovh72 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT lot of 5
N6 mfrimu 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface
N7 makumba1966 1*I2S FIFO KIT, 1*Dual XO Clock board , 1*S/PDIF Interface, 4 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 4x Additional BIII adapters PCB, 4x SMT connector package for BIII adapters
Board
 
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New Waiting List Update

N1 cddumat 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface Board
N2 spm I2S FIFO,Dual XO Clock board,S/PDIF Interface Board,2x SMT U.FL,8x 6",4x 12”,I2S backdoor KIT, 2xXO Adapters lot of 5,2xBIII adapters,2x SMT connector package
N3. Regland - 1*I2S FIFO Kit, 1*Dual XO Clock Board, 1*S/PDIF Interface Board, 2*BIII adapter
N4. AR2 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 2 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 2x
Additional BIII adapters PCB, 2x SMT connector package for BIII adapters
N5. vertigovh72 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT lot of 5
N6. sidiropa 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT
N7. Pinnocchio 1x I2S FIFO Kit, 1x Dual XO Clock Board,
N8 mfrimu 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface
N9 makumba1966 1*I2S FIFO KIT, 1*Dual XO Clock board , 1*S/PDIF Interface, 4 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 4x
Additional BIII adapters PCB, 4x SMT connector package for BIII adapters Board

Hi Mfrimu, makumba1966,

N6 and N7 registered 2 days earler by email, I forgot to update. Sorry about that.

Ian
 
Delivery status Aug 15, 2012

Shipped July28, 2012
#1,2,3,4,5

Shipped July30, 2012
#6,8,10,11,12,21,22,23,24,25,26,27,30,32,34,35,36,38,39,40,42,45,47,48,50

$10- already refunded to #42 for reduced shipping in an envelope

Shipped Aug1, 2012
#18,37,43,46
$14- already refunded to #46 for for posted as a letter

Shipped Aug3, 2012
#49, N4

Shipped Aug6, 2012
#N3, N5

Shipped Aug10, 2012
#15, N1

Shipped Aug15, 2012
#10A, 30A

Ian
 
Shipped July28, 2012
#1,2,3,4,5

Shipped July30, 2012
#6,8,10,11,12,21,22,23,24,25,26,27,30,32,34,35,36,38,39,40,42,45,47,48,50

$10- already refunded to #42 for reduced shipping in an envelope

Shipped Aug1, 2012
#18,37,43,46
$14- already refunded to #46 for for posted as a letter

Shipped Aug3, 2012
#49, N4

Shipped Aug6, 2012
#N3, N5

Shipped Aug10, 2012
#15, N1

Shipped Aug15, 2012
#10A, 30A

Ian

Hi Ian,

Assume #10A is the SPDIF board...?

Thanks!
Gary
 
Delivery status Aug 16, 2012


Shipped July28, 2012
#1,2,3,4,5

Shipped July30, 2012
#6,8,10,11,12,21,22,23,24,25,26,27,30,32,34,35,36,38,39,40,42,45,47,48,50

$10- already refunded to #42 for reduced shipping in an envelope

Shipped Aug1, 2012
#18,37,43,46
$14- already refunded to #46 for for posted as a letter

Shipped Aug3, 2012
#49, N4

Shipped Aug6, 2012
#N3, N5

Shipped Aug10, 2012
#15, N1

Shipped Aug15, 2012
#10A, 30A

Shipped Aug16, 2012
#13, N6
 
N01. cddumat 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface Board
N02. spm I2S FIFO,Dual XO Clock board,S/PDIF Interface Board,2x SMT U.FL,8x 6",4x 12”,I2S backdoor KIT, 2xXO Adapters lot of 5,2xBIII adapters,2x SMT connector package
N03. Regland - 1*I2S FIFO Kit, 1*Dual XO Clock Board, 1*S/PDIF Interface Board, 2*BIII adapter
N04. AR2 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 2 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 2x Additional BIII adapters PCB, 2x SMT connector package for BIII adapters
N05. vertigovh72 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT lot of 5
N06. sidiropa 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT
N07. Pinnocchio 1x I2S FIFO Kit, 1x Dual XO Clock Board,
N08. mfrimu 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface
N09. makumba1966 1*I2S FIFO KIT, 1*Dual XO Clock board , 1*S/PDIF Interface, 4 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 4x Additional BIII adapters PCB, 4x SMT connector package for BIII adapters Board
N10. LuisMCP - 1 x I2S Kit + 1 x Dual XO
 
#43 has arrived. Outstanding kit !!!

Many Thanks Ian !!!

As I am going to feed the I2S signal outputs of the clock board to the Inputs of two OPUS DAC, I would like to know if is it possible :

  • to use both J1 and J6 50 Ohms coax MCLK outputs to feed at the same time the two OPUS MCLK Input Signal ?

  • to use J2 I2S output Signals (except MCLK) to feed the Inputs of the two OPUS boards (Are J2 signals able to drive simultaneously two inputs) ?

  • any other suggestion ?
 
New Waiting List Update

N01. cddumat 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface Board
N02. spm I2S FIFO,Dual XO Clock board,S/PDIF Interface Board,2x SMT U.FL,8x 6",4x 12”,I2S backdoor KIT, 2xXO Adapters lot of 5,2xBIII adapters,2x SMT connector package
N03. Regland - 1*I2S FIFO Kit, 1*Dual XO Clock Board, 1*S/PDIF Interface Board, 2*BIII adapter
N04. AR2 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 2 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 2x Additional BIII adapters PCB, 2x SMT connector package for BIII adapters
N05. vertigovh72 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT lot of 5
N06. sidiropa 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT
N07. Pinnocchio 1x I2S FIFO Kit, 1x Dual XO Clock Board,
N08. mfrimu 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface
N09. makumba1966 1*I2S FIFO KIT, 1*Dual XO Clock board , 1*S/PDIF Interface, 4 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 4x Additional BIII adapters PCB, 4x SMT connector package for BIII adapters Board
N10. LuisMCP - 1 x I2S Kit + 1 x Dual XO
N11. number9 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface
 
#43 has arrived. Outstanding kit !!!

Many Thanks Ian !!!


As I am going to feed the I2S signal outputs of the clock board to the Inputs of two OPUS DAC, I would like to know if is it possible :

  • to use both J1 and J6 50 Ohms coax MCLK outputs to feed at the same time the two OPUS MCLK Input Signal ?

  • to use J2 I2S output Signals (except MCLK) to feed the Inputs of the two OPUS boards (Are J2 signals able to drive simultaneously two inputs) ?

  • any other suggestion ?

Hi cracra,

J1 and J6 were designed exactly for this purpose. They come from independent drivers with super low skew of 35ps.

No problem I2S ouput driving two DAC. You can try Both J3 and those u.fl I2S sockets. They were connedted internally.

Ian
 
#43 has arrived. Outstanding kit !!!

Many Thanks Ian !!!

As I am going to feed the I2S signal outputs of the clock board to the Inputs of two OPUS DAC, I would like to know if is it possible :

  • to use both J1 and J6 50 Ohms coax MCLK outputs to feed at the same time the two OPUS MCLK Input Signal ?

  • to use J2 I2S output Signals (except MCLK) to feed the Inputs of the two OPUS boards (Are J2 signals able to drive simultaneously two inputs) ?

  • any other suggestion ?

Dual Mono Opus Dac ? I`m using it. in a fastest way : i cutted-off one u.fl connector , take -off isolation ,soldered another wire to the core wire of u.fl cable and another to screen of the u.fl to connect it to second Opus board . 2 Opus board from one MCLK output. Similar to "original" dual mono opus dac wiring.... maybe i will make some kind of adapter using BIII adapter board
but now i`m very busy ... listening music... :)) BTW : ebay`s D/A Mental XO`s (27$ each) are not bad. i mean better then no-name ... i`m waiting for CCHD-957`s ....
 
Interested in joining waiting list...

Hi Ian, I've been following the progress of your FIFO buffer for a long while now and I think it is fantastic.

I have the Gigawork DAC from ebay heavily modified with NEW PSU for each supply and seperate transformer, redesigned OPA627 filter etc etc..

Can you help me with a couple of questions:

Where is the best place (for audio performance) to slot the buffer in, before or after the up-sampling board (CS8421 and I assume after would be best)?

Is it possible to run the up-sampler from the FIFO clock to improve jitter performance?

Many thanks,

George.
 

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Hi Ian, I've been following the progress of your FIFO buffer for a long while now and I think it is fantastic.

I have the Gigawork DAC from ebay heavily modified with NEW PSU for each supply and seperate transformer, redesigned OPA627 filter etc etc..

Can you help me with a couple of questions:

Where is the best place (for audio performance) to slot the buffer in, before or after the up-sampling board (CS8421 and I assume after would be best)?

Is it possible to run the up-sampler from the FIFO clock to improve jitter performance?

Many thanks,

George.

George, Please always place the FIFO as close as possible to your DAC.

However,there are a lot of options interfacing fifo with a ASRC such as a CS8421. If you place the FIFO before the ASRC, you may have chance running CS8421 at sync mode (or slave mode) which would be expected getting better sound.

Have fun with DIY.

Ian
 
New Waiting List Update

N01. cddumat 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface Board
N02. spm I2S FIFO,Dual XO Clock board,S/PDIF Interface Board,2x SMT U.FL,8x 6",4x 12”,I2S backdoor KIT, 2xXO Adapters lot of 5,2xBIII adapters,2x SMT connector package
N03. Regland - 1*I2S FIFO Kit, 1*Dual XO Clock Board, 1*S/PDIF Interface Board, 2*BIII adapter
N04. AR2 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 2 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 2x Additional BIII adapters PCB, 2x SMT connector package for BIII adapters
N05. vertigovh72 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT lot of 5
N06. sidiropa 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT
N07. Pinnocchio 1x I2S FIFO Kit, 1x Dual XO Clock Board,
N08. mfrimu 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface
N09. makumba1966 1*I2S FIFO KIT, 1*Dual XO Clock board , 1*S/PDIF Interface, 4 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 4x Additional BIII adapters PCB, 4x SMT connector package for BIII adapters Board
N10. LuisMCP - 1 x I2S Kit + 1 x Dual XO
N11. number9 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface
N12. Fridrik 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface 2x Universal SMT XO Adapters KIT, 1x I2S backdoor KIT
 
Hi!

I just found out about this very interesting project!

I'm planning on building a combined multichannel DSP/digital filter and DAC, and would like some advise on which parts that I would need for using this fifo in the setup. The dac is Buffalo III (in multichannel mode) and the source would be a dsp boards which outputs multichannel I2S (only one fs will be used).

By the way, is the Placid HD PSU from Twisted Pear suitable for powering the fifo?

Best regards,
Mattias
 
Hi!

I just found out about this very interesting project!

I'm planning on building a combined multichannel DSP/digital filter and DAC, and would like some advise on which parts that I would need for using this fifo in the setup. The dac is Buffalo III (in multichannel mode) and the source would be a dsp boards which outputs multichannel I2S (only one fs will be used).

By the way, is the Placid HD PSU from Twisted Pear suitable for powering the fifo?

Best regards,
Mattias

Not so Good News:
The current FIFO will not allow multichannel. Running more than one of the existing boards for each pair of i2s channels will have each pair of channels delayed by a different amount. Which is obviously less than desirable.


Better News:
It's been discussed and Ian has mentioned that he has considered adding something like this in the future and you're not alone in wanting these features for more than 2channels!

Power Supplies:
For power supplies I believe you need 0.6A @ 5V for the current design (the docs on Ian's signature should clarify that beyond doubt though).
 
No problem Pepe. KITs were reserved for all registered GBII member. So thay are still available for you. Please go ahead with order form.

Thank you.

Ian

Ian,

do please hold my order, I am travelling again and cannot have access to internet easily. I´ll be back at home first week of september and it would be great if you can hold it until I can pay by then.

best regards
Pepe
 
Hi!

I just found out about this very interesting project!

I'm planning on building a combined multichannel DSP/digital filter and DAC, and would like some advise on which parts that I would need for using this fifo in the setup. The dac is Buffalo III (in multichannel mode) and the source would be a dsp boards which outputs multichannel I2S (only one fs will be used).

By the way, is the Placid HD PSU from Twisted Pear suitable for powering the fifo?

Best regards,
Mattias

Not so Good News:
The current FIFO will not allow multichannel. Running more than one of the existing boards for each pair of i2s channels will have each pair of channels delayed by a different amount. Which is obviously less than desirable.


Better News:
It's been discussed and Ian has mentioned that he has considered adding something like this in the future and you're not alone in wanting these features for more than 2channels!

Power Supplies:
For power supplies I believe you need 0.6A @ 5V for the current design (the docs on Ian's signature should clarify that beyond doubt though).

Thanks hochopeper, you gave correct answer. Current FIFO is a pure stereo design. To achieve a muti-channel FIFO, it need more memory and new FPGA logic. It would be a different design which I'm doing right now.

Have a nice week.

Ian
 
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