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 50 of 172
Value Event Description
‘12’ NXP_EVT_INFO_EXT_RF_FIELD This event is sent to the host to inform
about external RF field presence. This
notification is sent, if at least one Card
Emulation is enabled.
‘13’ NXP_EVT_INFO_MEM_VIOLATION
3
This event is sent to the host to inform
about PN544 internal memory violation.
This violation could have been caused by:
- EEPROM memory corruption (protected
by CRC, see NXP_INFO_EEPROM_ERR
registry entry)
- Wrong memory access (cause internal
PN544 reboot)
‘14’ NXP_EVT_INFO_TEMP_OVERHEAT This event is sent to the host to inform
about temperature overheat. This issue is
triggering the internal protection mode.
‘15’ NXP_EVT_INFO_LLC_ERR This event is sent to the host to inform
LLC error counter is reached on SWP.
Note:
NXP_EVT_INFO_TXLDO_OVERCUR event can occur in Reader mode, in case of
Antenna connection break (or Antenna close to metal area). In that case PN544 will
automatically switch off RF and Reader function is disabled (NXP_PL_RDPHASES is
reset).
The NXP_EVT_INFO_PMUVCC event has the following parameter:
Table 38. PMUVCC Event
Description Length
Status 1
Status field indicates current PMUVCC state
- 0x00: indicates PMUVCC switched from ON to OFF
- 0x01: indicates PMUVCC switched from OFF to ON
3. To recover first reset the IC and restart the application – if the problem still exists re-download PN544
firmware
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