Specifications

PL 3120/PL 3150/ PL 3170 Power Line Smart Transceiver Data Book 63
Magcard Input
This I/O object is used to transfer synchronous serial data from an ISO 7811 Track 2 magnetic stripe card reader in real
time. The data is presented as a data signal input on pin IO9, and a clock, or a data strobe, signal input on pin IO8. The
data on pin IO9 is clocked on or just following the falling (negative) edge of the clock signal on IO8, with the LSB first.
In addition, any one of the pins IO0 – IO7 can be used as a timeout pin to prevent lockup in case of abnormal abort of
the input bit stream during the input process.
Up to 40 characters can be read at one time. Both the parity and the Longitudinal Redundancy Check (LRC) are checked
by the PL Smart Transceiver.