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Contact station interface
Printers with a smartcard contact station are tted 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.
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 C9 (ground when the chip is switched with the contact station)
C
52
DB-9 connector
USB, serial, etc. port
External coupler
USB or parallel port
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