Return-Path: Subject: Re: [Bluez-devel] first(?) bc4 module From: Marcel Holtmann To: bluez-devel@lists.sourceforge.net In-Reply-To: References: Content-Type: text/plain Message-Id: <1113498163.8989.57.camel@pegasus> Mime-Version: 1.0 Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Thu, 14 Apr 2005 19:02:43 +0200 Hi Peter, > well, at least the 2 MBit mode should be usable over the UART interface. > The BC04 UART supports 1.5 MBit, but this is "Full Duplex". So if you have > bi-directioal data transfer that is 3 MBit total. For mostly > uni-directional traffic even 1.5 MBit is a very good transfer rate over a > 2 MBit air link because at best you can get around 1.5 MBit user data > transferred. There is still some HCI overhead on the UART, but I think > this is only around 1..2% and can be neglected for a first estimate. > > However, for a 3 MBit connection with mostly uni-directional traffic the > UART interface is not sufficient anymore. I leave it to the CSR guys to post a correct comment on these things, but in general the UART interface is no longer what you want if you plan to use EDR. > Things again look very different if you use a BC04 with internal SCO > routing (e.g. for a A2DP headset). But this is a diffrent story. The SCO stuff has nothing to do with A2DP, because this is ACL based. Regards Marcel ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel