Section 2. Installation
11
TIMING
Figure 2-6 shows the timing for Mag-stripe decode operations when a card is inserted or
withdrawn.
Figure 2-6. Timing
SMART CARD READER
The TTL PCB provides connections to all 16 ICC contacts as defined by ISO and CP8/AFNOR
specifications. Pins 1, 2, 3, 4, 5, 6, and 8 on the 26-pin I/O connector will provide a direct
connection to the associated IC contact.
During self-test, the pin 7 Data contact will be “disconnected” from the data contact of the ICC
card and allowed to “float”.
NOTES
1. TIME OUT OF THE CARD PRESENT SIGNAL OCCURS
APPROXIMATELY 150 MS AFTER THE LAST STROBE TRANSITION.
2. DATA IS VALID 1.0
µ
S (MINIMUM) BEFORE THE NEGATIVE EDGE OF
STROBE.
3. 6 OR 7 HEAD FLUX REVERSALS ARE IGNORED FOR LOW DENSITY
CONFIGURATION AND 14 OR 15 FOR HIGH DENSITY
CONFIGURATION.
CARD PRESENT
(MAG MEDIA
DETECTED)
NOTE 1
0
1 1
0 0 0 0 0
DATA
0 0
1 1 1
BIT
TIME
STROBE WIDTH
APPROXIMATELY
25-50% OF BIT TIME
NOTE 3
STROBE
NOTE 2
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