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 51 of 172
The NXP_EVT_INFO_EXT_RF_FIELD event has the following parameter:
Table 39. EXT_RF_FIELD Event
Description Length
Presence 1
Presence field indicates current external RF field presence
- 0x00: indicates no RF field present
- 0x01: indicates RF field present
The NXP_EVT_INFO_TEMP_OVERHEAT event has the following parameter:
Table 40. TEMP_OVERHEAT Event
Description Length
Status 1
Status indicates about the protection procedure status
- 0x00: indicates temperature overheat detected then PN544 will enter standby
mode (50ms after the event has been sent)
- 0x01: indicates temperature cooled down then PN544 has rebooted
Table 41. R/W Commands
Value Event Description
’3E’
NXP_READ
This command is used by the host to read PN544 memory
’3F’
NXP_WRITE
This command is used by the host to write PN544 memory
To Next Page
Loading...