[hpsdr] Ozy and WinUSB

Bill Tracey bill at ewjt.com
Fri Jul 24 18:58:03 PDT 2009


Hi Pete,

We currently do not use isochronous transfers  - never had the need 
to with USB 2.  I suspect most use of isochronous  is on USB 1.1 type 
setups where audio bitrates start to get close to the rate of the 
channel so you need to use a protocol that guarantees your slot.

Regards,

Bill

At 09:51 AM 7/24/2009, n3evl wrote:
>***** High Performance Software Defined Radio Discussion List *****
>
>I've no idea how important a criteria it is but I noticed when 
>reading up on winUSB that one feature it does NOT support is 
>Isochronous Transfers.  Maybe this is not relevant, but I seem to 
>remember that this was a factor in Flex choosing firewire over other 
>alternatives for the 5000.  I think this was in order to support 
>multiple channels of data while maintaining phase 
>relationships.  Maybe the USB/networking gurus can comment.
>
>Pete, N3EVL
>_______________________________________________



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