TPA - USB Transport

[thomaspf]

Unless the board is made to conform to a class driver at which point it should just work on any OS.

Problem is that one of the more popular OSes is falling behind in USB audio driver support.

Some additional features like DXD and direct DSD support might also require a special driver and probably ASIO support since I don't believe there are any OS native sound APIs supporting playback of dsdiff right now.

Cheers

Thomas

 

[Russ White]

Will it be possible (e.g. via some onboard headers) to use some really good clock later (e.g. ultra low phase noise SC-cut OCXO) for these two master clock frequencies?

Well lets just say anything is possible, but no it will not be designed with that in mind. It will come stock with two superb clocks.

 

[Russ White]

The board will work with any standard USB Audio class 2 compliant host. Most Mac users will get this out of the box, for windows users there will be the driver that XMOS provides.

We will not be writing any special drivers right now anyway.

 

[BrianL]

That is good, Russ, and much less burden for you. Perhaps it will also fly with Linux. It seems that at the moment too many of the higher-data-rate USB audio devices require custom s/w.

 

[Hercules]

Hi Russ:

Will this USB interface can work alone and boxed separately like Hi-Face EVO, so I can use with any DAC I owned?

 

[regiregi22]

The board will work with any standard USB Audio class 2 compliant host. .

These are the official specs
http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip

 

[Russ White]

Hi Russ:

Will this USB interface can work alone and boxed separately like Hi-Face EVO, so I can use with any DAC I owned?

That depends on if you choose to put it in its own box. Totally up to you.

 

[Hercules]

That depends on if you choose to put it in its own box. Totally up to you.

Sweet!!

Any timeframe for it's availability?

 

[Russ White]

I plan on ordering prototype PCBs by October.

 

[Hercules]

Hopefully it can be my x'mas gift!

 

[NicMac]

Hopefully it can be my x'mas gift!

2012

 

[TBM]

Hi Russ

What is the ca size of the pcb?

 

[drone]

Hi,

I am also asking for the size of the board. As I am in the process of building my case and I'd want to flip the old usb modul for the new one.

thx

 

[Zero Cool]

I plan on ordering prototype PCBs by October.

I would gladly volunteer to be a Beta Tester!

 

[lauret]

Hi,

I am also asking for the size of the board. As I am in the process of building my case and I'd want to flip the old usb modul for the new one.

thx

I do not know if this is still valid, but in October 2010 Russ said:

The current plan is to try to make it the same size at the Buffalo module.

 

[Russ White]

I have been working very hard. I am very close to a prototype. Brian and I have been discussing some of the finer points of the design.

 

[Hercules]

Russ, don't make us as disappointed as Iphone 4s!!!

 

[regiregi22]

Russ, don't make us as disappointed as Iphone 4s!!!

Just be careful not to bring the proto with yourself when hanging out at bars

 

[Russ White]

Update:

I nearly have the layout done, but there is a design detail that needs to be decided. We are planning to use two great new clocks from Crystek which have enable pins and are similar to what we use on the Buffalo III, but we need higher frequencies then they currently stock. So we are awaiting word from them if they can make special frequencies for us.

I may end up needing to do the layout for multiple possible clocks if they can't. the other possibility is that the first batch may only support up to 192khz.

 

[wktk_smile]

Update:

I nearly have the layout done, but there is a design detail that needs to be decided. We are planning to use two great new clocks from Crystek which have enable pins and are similar to what we use on the Buffalo III, but we need higher frequencies then they currently stock. So we are awaiting word from them if they can make special frequencies for us.

I may end up needing to do the layout for multiple possible clocks if they can't. the other possibility is that the first batch may only support up to 192khz.

8.304mhz and 9.3168mhz?