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NXP Semiconductors
UM191812
PN544 C2 User Manual
191812
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
User Manual
Rev. 1.2 — 2010-06-16
44 of 172
As soon as Pipes are created and opened, PN544 will save this setup in EEPROM (Pipe
states are persistent). It means that at the next PN544 restart (VEN reset); PN544 will
stay in this mode also called ‘default mode’.
WARNING:
As this default configuration is stored in the internal EEPROM,
It is recommended to limit the initialization process to the First time setup.
9.2.4 After First Setup – Default state
After an initial configuration of the PN544, there is no further need to perform the same
level of configuration on subsequent initializations. As Pipes states are persistent, PN544
will start automatically in its ‘default/initialized mode’ which means that Gates & Pipes are
‘ready to use’.
At Host level, it should be easy to check if the initialization has already been performed
by checking the SESSION_IDENTITY value (Administration Gate).
At the end of the first PN544 initialization, the HOST can set the SESSION_IDENTITY to
its own value (see Fig 29). For the next startup it has to check if the
SESSION_IDENTITY returned by PN544 is the one it has set.