Nedap uPASS Access - Magstripe ISO7811;2

uPASS Access | installation guide
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3.2.4 Magstripe ISO7811/2
The Magstripe ISO7811/2 (clock & data) and Wiegand interface share the same connections. This means that only
Wiegand or Magstripe can be used and not both simultaneously.
Magstripe connections
GRAY
Clock
PINK
Data
GROUND
Ground
SHIELD
Shield connected to DC-ground. Connect to metal case of the external device.
Message format
The Wiegand/Magstripe output format is determined by the programmed format of the tag. Make sure to order the
correct tag formatting if you want to use the Wiegand or Magstripe interface. See the uPASS how to order guide for
more information.
If UHF tags is not programmed in Wiegand format, you may configure Magstripe output format using the 'Extra output'
settings. See for more details chapter 5.3.3.
Magstripe timing
The Magstripe (clock & data) interface follows the ISO7811/2 specifications. The figure below shows the timing for one
character. Each bit consists out of one period low (220µsec) and two periods high (440µsec). The bit times have an
accuracy of 10 percent. The data-signal is valid and stable on the falling edge of the clock-signal.
odd parity
msb
lsb
3300µsec
0
1
1
0
1
220µsec
660µsec
5V
0V
CLK
5V
0V
DAT
Figure
8: Magstripe timing details
Timi
ng constants
Clock period
660µsec
Clock high
440µsec
Clock low
220µsec
Data preamble
11msec
Data postamble
11msec
OSDP firmware
The OSDP firmware does not support the Magstripe interface!
Notes
• Use shielded cable (4 x 0.25 mm
2
) when extending the Magstripe wiring beyond the standard 5 meter cable.
• Maximum Magstripe cable length 150 meters (
500 feet).