Sorry, I posted this off-list accidentally. Here it is on-list this time. -------------- Am I to understand, then, that with the Twin I should not worry about the APDU vs. TPDU differences because your driver allows me to use either? Thanks, Carl
On Tue, 6 Jul 2004 18:44:06 +0200, Ludovic Rousseau <[EMAIL PROTECTED]> wrote: > Le Tuesday 06 July 2004 � 09:12:41, Carl Youngblood a �crit: > > I'm trying to decide between the GemPC Twin and the GemPC USB SL for a > > project that I'm working on that will use the CardEdge applet and the > > muscle PCKS11 libraries. I intend to use only the USB interface of > > the twin, if I get it. I see that the CCID drivers support both. Is > > there any advantage to one over the other? > > If I compare the files ccid/readers/GemPCTwin.txt and > ccid/readers/GemPC433_SL.txt I find some differences. > > The GemPCTwin supports 5V, 3V and 1.8V cards and the GemPC USB (new name > of the 433 SL if I am right) supports only 5V. > But my CCID driver always uses 5V by default so it may not be so > important. > > Also the GemPC Twin works in TPDU and the GemPC USB works in APDU. But > you can configure my CCID driver to switch the Twin in APDU. > > > It looks to me like the SL is the only one that has USB 2.0 support. > > Is this true? > > Both readers are "USB full speed (12 Mbps)" according to [1] and [2]. > > > If so, does it make any difference? Perhaps the bottleneck is more on > > the smartcard CPU than it is on the USB link. > > Both readers are clocked at 4 MHz. So even with 1 bit per clock cycle > the maximum communication speed of a card would be 4 Mbps. I don't know > if such a card exists. > > I think your choice will depend on the price, the form factor or the > accessories [3]. > > Regards, > > [1] http://www.gemplus.com/products/gempc_usb_sl/ > [2] http://www.gemplus.com/products/gempctwin/ > [3] http://www.gemplus.com/products/gempc_twin_accessories/ _______________________________________________ Muscle mailing list [EMAIL PROTECTED] http://lists.drizzle.com/mailman/listinfo/muscle
