On 09/24/2015 03:14 PM, Steinar H. Gunderson wrote:
On Thu, Sep 24, 2015 at 03:09:55PM +0200, Krzysztof Opasiak wrote:
But still the problem may exist. Is the 2.16 GBit bandwidth for 4th altset?
No. The 2nd altset is 2.16, the 4th altset is 1.04. Unless my calculations
are wrong.
How do you do your calculations?
Remember that according to USB spec not whole bandwidth can be used by iso
transfers (in usb 2.0 the limit is 80%, don't know how it looks in 3.0). So
if 2.16 is lowest possible bandwidth for your device you have 2.16 x 2 =
4.32 but 80% * 5 = 4...
But total bandwidth shouldn't be the issue as long as the 2nd altset
(by itself) works fine, no? It's _more_ than twice that of the 4th.
Definitely agree. Didn't get this from your previous messages.
--
Krzysztof Opasiak
Samsung R&D Institute Poland
Samsung Electronics
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