61
C
DB-9 connector pins
Smartcard contact points
1
C1 (V c.c.)
2
C2 (reset)
3
C3 (clock)
4
C4 (reserved)
5
C5 (ground)
6
C6 (Vpp)
7
C7 (I/O)
8
C8 (reserved)
9
Card present signal
Contact Station Interface
Printers fitted only with a smartcard contact station (without integrated encoder)
are fitted with a female DB-9 connector which is found on the back of a printer.
This connector, directly connected to the contact station inside the printer, is also
connected to an external coupler to program the chip.
A sequence of commands must be sent via the printer’s interface to insert a card into the printer then position it under the station and establish contact.