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Subject: | Re: [ts-7000] USB faulty on ts7800s |
From: | Catalin Ionescu <> |
Date: | Wed, 1 Jul 2009 09:02:23 +0300 |
The Marvell SoC doesn't support isochronous transfers usually needed for USB sound cards. USB 2.0 doesn't have isochronous transfer at all and thus some devices work and some don't. Being an unreliable data transfer method, it is used only for devices that can cope with missing chunks of data, thus USB storage devices never use it. I have seen myself in the same situation with some exotic devices and had to find different solutions. Unfortunately, in my case an USB hub never helped. So, as long as you know what to use the board for, it will do the job properly. But read the SoC errata PDF before! __._,_.___
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