Return-Path: From: Wolfgang =?iso-8859-1?q?M=FCes?= To: bluez-users@lists.sourceforge.net Date: Thu, 20 Jul 2006 17:52:47 +0200 References: <200607200028.47928.info@david-geiger.de> <44BEC4AC.4050203@xmission.com> <1153379075.25515.5.camel@pc044.coreteam.oslo.opera.com> In-Reply-To: <1153379075.25515.5.camel@pc044.coreteam.oslo.opera.com> MIME-Version: 1.0 Message-Id: <200607201752.47834.wolfgang@iksw-muees.de> Subject: Re: [Bluez-users] CSR BlueCore4 dongles Reply-To: BlueZ users List-Id: BlueZ users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-users-bounces@lists.sourceforge.net Errors-To: bluez-users-bounces@lists.sourceforge.net On Thursday 20 July 2006 09:04, Per Thomas Jahr wrote: > On Wed, 2006-07-19 at 17:47 -0600, Brad Midgley wrote: > > the bus has to fall back to usb1 speeds when a usb1 device > > on the bus is active. > > That was really useful information! And a really wrong information.... The truth is: every USB device needs time to make their transfers. Slow devices need more time than fast. The host is switching between slow, fast and high speed devices dynamicly. So a slow device can "steal" much of the available transfer time of the bus, and slow down fast devices on the same bus. But a slow device can not urge the host to serve a high speed device with a lower speed. regards Wolfgang -- We're back to the times when men were men and wrote their own device drivers. (Linus Torvalds) ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users