May
2006, Issue 190
Mobile
Phone Book
M16C/62P-Based
Data Backup System
Renesas M16C 2005 Honorable Mention
ANSWER
TO RESET
Immediately
after the smart card powers up, it sends an ATR message
to the host. This conveys to the host the parameters
required by the card for establishing a data communication
pathway.
The
ATR message, which can be up to 33 bytes, contains transmission
parameters. The transport protocol supported by the
card (usually the T=0 or the T=1) is one such parameter.
Other transmission parameters include the data transmission
rate, card hardware parameters (e.g., serial number
and the mask version number), and additional information
that the host needs to know about the card.
