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List:       ms-smartcardddk
Subject:    Re: G&D test card used in T=1 at 115kbauds
From:       Christophe Chausset <Christophe.Chausset () SUR ! SC ! PHILIPS ! COM>
Date:       1999-03-16 12:51:24
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     Klaus,
     
     I have been in contact with a person from G&D. And it appears that the 
G&D card is working with a CWT of 15 etus = 126 µs, whereas the ATR indicates a 
CWT of 43 etus (TB3 = 35 implies CWI of 5). That is explaining the problem some 
people and I have encountered. G&D should modify their ATR to be ISO compliant 
(TB3=32).

Best regards,

Christophe Chausset
Philips Semiconductors

____________________________ Séparateur Réponse ________________________________
Objet : RE: G&D test card used in T=1 at 115kbauds
Auteur :  Klaus Schutz <kschutz@microsoft.com> ŕ #SMTP
Date :    25/02/99 09:46


Christophe,
     
We're using this card with several readers here at Microsoft 
and have not encountered the problem you describe. I can 
successfully use this card at 115200 Baud. Apperently, the 
reader I use for the test (Bull TLP3) has no problems with 
the G&D card. 
     
You say that several people have the same problem. I know only of 
three reported problems and those have been solved. I would like 
to know who these people are, so I can contact them and see if 
this is really a card issue.
     
There is no plan to update the card currently. If your reader 
cannot support the high data rate of the card, I suggest that 
you issue the PPS for a lower data rate.
     
Klaus U. Schutz
Microsoft
     
-----Original Message-----
From: Christophe.Chausset@sur.sc.philips.com 
[mailto:Christophe.Chausset@sur.sc.philips.com] 
Sent: Thursday, February 18, 1999 1:13 AM
To: SmartCardDDK@DISCUSS.MICROSOFT.COM 
Cc: Klaus Schutz
Subject: G&D test card used in T=1 at 115kbauds
     
     
     Hello,
     
     I am encountering a problem with G&D test card. TA1 returned in ATR is
18h 
     (Fi=372 and Di=12). The card is working correctly in T=0 protocol at
115 
     kbauds after a PPS negotiation, but not in T=1 protocol. 
     
     A successful PPS exchange is returned when Fi/Di and protocol T=1 
     negotiation is performed. But when sending the PCB of the APDU 00 A4 00
00 
     02 00 01, the card is answering a R-block 00 82 00 82 in the same time.
So 
     there is a conflict on I/O line. (Our reader is respecting all the
timings) 
     The card is working correctly at 9600 bauds in T=1 protocol. 
     
     I know this problem has been seen by several people.
     
     My questions are:
     
     - will the G&D card be updated, as it is not working correctly at 115 
     kbauds in T=1 protocol ? (returning an unsuccesful PPS),
     - and can I just negotiate the protocol and not the parameters to
bypass 
     this bug knowing this feature will be applied for all other cards 
     supporting a Fi/Di different from 372/1 and two protocols (T=0/T=1) ? 
     In other words, what Microsoft is expecting from the reader in this 
     specific case ?
     
     Thank you for your support.
     
     
     Kind regards.
     
     Christophe Chausset
     Smart Card Coupler Application Engineer 
     Applications Laboratory PARis (ALPAR) 
     Philips Semiconductors
     
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