Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter

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#7,781
Hi @iancanada
Would you consider adding a UcHybrid 3.3v to a LifeP04 rail or using 3 rails of the Lifep04 (without UcHybrid) to power your Dual Mono ES9038 (mk1) the best upgrade?
What rail (FifoPi, Dual mono DAC(single rail), Rpi or analog section) would benefit the most of adding a UcHybrid?

I have LifeP04 mkII -> Rpi -> FifoPi Q1 -> ES9038Q2MPiDualMono -> I/V std mkI

Thanks in advance 🙂
 
#7,783
Hi All, sorry for the noob questions in advance.
So I got VMV D2 and a Denafrips Venus, time to see if feeding them via I2S instead of USB makes a difference. But commercial products are ridiculously unavailable / expensive. So here I am trying to figure out if I could build something based on Ian's components, keeping it reasonably simple and also not ending up spending thousands of dollars (or euros in my case).
I would just like to build a stack of 4-5 cards including Pi if that's possible.

Pi
ConditionerPi
FiFoPi3
Reclocker (do I need it?)
TransportPi

Let me guess, this is not doable, ConditionerPi is not going to be able to power FiFoPi and the rest because they are 3.3V instead of 5V? Please tell me I'm wrong and indeed it is doable or there's some simple solution te get 3.3V out of ConditionerPi!

I really want to avoid those deathstar builds you guys are posting 🙂

Thanks a lot!


ConditionerPiWithP4.jpg
 
#7,784
miklau said:
Hi @iancanada
Would you consider adding a UcHybrid 3.3v to a LifeP04 rail or using 3 rails of the Lifep04 (without UcHybrid) to power your Dual Mono ES9038 (mk1) the best upgrade?
What rail (FifoPi, Dual mono DAC(single rail), Rpi or analog section) would benefit the most of adding a UcHybrid?

I have LifeP04 mkII -> Rpi -> FifoPi Q1 -> ES9038Q2MPiDualMono -> I/V std mkI

Thanks in advance 🙂
Click to expand...

LifePO4 power supply will be benefited from UcHybrid for sure. The analog rail would be the most significant. You can start from it first.

Ian
 
#7,785
rikibow said:
Hi All, sorry for the noob questions in advance.
So I got VMV D2 and a Denafrips Venus, time to see if feeding them via I2S instead of USB makes a difference. But commercial products are ridiculously unavailable / expensive. So here I am trying to figure out if I could build something based on Ian's components, keeping it reasonably simple and also not ending up spending thousands of dollars (or euros in my case).
I would just like to build a stack of 4-5 cards including Pi if that's possible.

Pi
ConditionerPi
FiFoPi3
Reclocker (do I need it?)
TransportPi

Let me guess, this is not doable, ConditionerPi is not going to be able to power FiFoPi and the rest because they are 3.3V instead of 5V? Please tell me I'm wrong and indeed it is doable or there's some simple solution te get 3.3V out of ConditionerPi!

I really want to avoid those deathstar builds you guys are posting 🙂

Thanks a lot!


View attachment 1048304
Click to expand...

@rikibow

I understand your requirements for the RPi transports with HDMI output . I will have two solutions for you

1. Performance series, best and simplest

TransportPi Digi (with secondary re-reclock and HDMI output)
RPi
UcPi (5V ultracapacitor power supply seat)

2. Advanced series, best of best but still very simple

HdmiPi Pro (with discrete ultra low jitter secondary re-clock and ultra low noise discrete LVDS drivers)
FifoPi Ma
Rpi
PurePi(5V ultracapacitor + 3.3V isolated battery power supplies seat)

I'm working hard trying to make them available soon.

Regards,
Ian
 
#7,786
iancanada said:
@rikibow

I understand your requirements for the RPi transports with HDMI output . I will have two solutions for you

1. Performance series, best and simplest

TransportPi Digi (with secondary re-reclock and HDMI output)
RPi
UcPi (5V ultracapacitor power supply seat)

2. Advanced series, best of best but still very simple

HdmiPi Pro (with discrete ultra low jitter secondary re-clock and ultra low noise discrete LVDS drivers)
FifoPi Ma
Rpi
PurePi(5V ultracapacitor + 3.3V isolated battery power supplies seat)

I'm working hard trying to make them available soon.

Regards,
Ian
Click to expand...
@iancanada Oh thank you very much, sounds super exciting, can't wait 🙂
 
#7,787
iancanada said:
LifePO4 power supply will be benefited from UcHybrid for sure. The analog rail would be the most significant. You can start from it first.

Ian
Click to expand...
Thanks Ian🙂

Sorry if I haven’t understood the UcHybrid correctly but would it be necessary to buy one or two if I was to start with the analog section? One for the positive rail and one for the negative? And is one UcHybrid sufficient for a rail where 4 batteries are in series for the I/V std?

Regards Mikkel
 
#7,788
When assembling the StationPi Pro with the 4D systems panel and using the StationPi Pro as the FIFOPi Q3 controller by connecting the J4s, can I leave the ESS Controller in place on the FIFOPi? Is all of the ESS Controller functionality then available on the 4D panel?
 
#7,791
@WuBai

FifoPi Ma is a PRi I2S/DSD/DoP reclocker HAT working in master mode. FifoPi Ma successfully achieves an ultra low jitter and noise performance by the well reputed multi stages discrete reclock solutions. FifoPi Ma is functionally equivalent to a FifoPiQ3 plus a ReClockPi. However the FifoPi Ma could be an even lower cost solution than FifoPi Q3 because it saves the SDRAM. FifoPi Ma will be compatible with FifoPi Q3 in both physical dimensions and electronic connections.

HdmiPi Pro is a dedicated I2S over HDMI transport board. It will be the first HDMI HAT that uses discrete LVDS drivers to achieve highest performance and lowest noise comparing with all current HDMI solutions. And it will also included the well reputed discrete secondary reclock similar to ReClockPi. HdmiPi Pro targets the best HDMI streamer to improve the external DACs that have HDMI input. HdmiPi Pro will work with both FifoPi and FifoPi Ma.
 
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#7,793
dddac said:
@ Ian, quick question...

What load can the FiFoPi Q3 and ReclockPi drive in terms of Fan-out or mA at what pF load?

Thanks,

Doede
Click to expand...
@dddac

Both FifoPi Q3 and ReclockPi were compensated to 50 ohm output impedance. Have less than 2.5ns Tr and Tf at 50pf and 500 ohm load.
FifoPi can deliver +-18mA current while ReclockPi can deliver +-24mA.

Do you think point to point connection is better than the bus connection for DDDAC parallel applications?

Regards,
Ian
 
#7,795
iancanada said:
@geoturbo

With the StationPi Pro controller (with built in FifoPi controller), you can see the delay time (picture below).
The controller is an open source project, you can built it by yourself.
The source code can be downloaded here:
https://github.com/iancanada/DocumentDownload/tree/master/Adapters/StationPiPro

Regards,
Ian
Click to expand...

Hi Ian,

If I would like to use a different type display to show the Information of the playing music. It is a dot-matrix display.
I.E. "PCM 44.100 kHz"; "DSD 128" etc.
Which type of "language" and which "instructions" would I need to read it out of the FifoPiQ3b over the serial bus of the station pi.

Thank you

Branko
 
#7,797
#7,799
iancanada said:
@drone

My StationPi Controller already shows those information. But you can do it by yourself if you can program.
The protocol can be understood from my source code
https://github.com/iancanada/DocumentDownload/tree/master/Adapters/StationPiPro
It's just a UART interface 9600,n,8,1 in 3.3V LVTTL logic levels.
I use C++.

Regards,
Ian
Click to expand...
Hello Ian,

thank you for that information.
As I will need some type of microcontroller (I use Arduino for now with this display and buffalo IIIpro): should I use some sort of digital isolator on the serial connection?
Or even could I use the RPi which is already on the StationPi?
What else information could I get from the FifoPi?

Thank you so much

Branko
 
#7,800
Hi Ian, hope you will have 2 min to evaluate my Vejnoe v2 streamer (Vejnoe v1 is my current RPI+Audiophonics9038+5" oled)

Next project will be with your dual mono 9038 and a 6H30P-DR based cathode follower balanced output stage.

But where to order the following ? Will Audiophonics be able to help ?

-digital input (Recieverpi pro)
-digital output (Transport pi)
-Fifopi v3
-dualmono3038
-ess sabre controller

And as I'm old/new school, can the recieverpi pro be operated with a manual selector ? (do you have a diagram ?)

If it was possible to have a similar "reciecerpi pro controller" with same oled and physical size as the ess controller, or a combination of both... then I could make a really nice Preamp-streamer.

And one last question 🙂 the Audiophonics Isabre ESS DAC is beeing volume controlled from RPI thru ALSA parameters, and nicely integrated with encoder connected to the card. Is the same possible with ESS controller ?

Thanks in advance.
 
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