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USER MANUAL
STM 550X / EMSIX
–
ENOCEAN MULTI-SENSOR
© 2020 EnOcean | www.enocean.com F-710-017, V1.0
STM 550x / EMSIx User Manual | v1.0 | February 2020 | Page 4/79
ERP2 frame format .............................................................................. 27
EnOcean Equipment Profiles (EEP) and SIGNAL telegrams ................................ 28
STM 550x supported EEP ...................................................................... 28
UTE (Universal Teach-in) telegram ......................................................... 30
Telegram encryption ............................................................................ 32
Telegram authentication ....................................................................... 33
Dynamic security key modification ......................................................... 34
Rolling code and signature (CMAC) type ................................................. 35
STM 550x security implementation ................................................................ 36
NFC interface state machine .................................................................. 41
Read command ................................................................................... 43
Write command ................................................................................... 43
Password authentication (PWD_AUTH) command ..................................... 44
NFC HEADER area structure .................................................................. 47
Using the NFC configuration functionality ................................................ 48
CONFIGURATION area structure ............................................................ 48
NFC_PIN_CODE ................................................................................... 49