MLX90132 Datasheet, PDF (36/44 Pages) Melexis Microelectronic Systems – 13.56MHz RFID / NFC Transceiver

MLX90132
13.56MHz RFID / NFC Transceiver
Start ISO14443 Type B
Reception
Initialize CRC calculation
Wait for Sub-carrier
Reception Timeout (FWT expires)
Error 0x68
stored in Buffer
TR1 < TR1_MIN
Check TR1
TR1 > TR1_MAX
Error 0x65
stored in Buffer
1^st part of SOF not
correctly received
Decode 1^st part of
SOF
1^st part of SOF correctly received
(between 10 and 11 ETUs)
Error 0x63
stored in Buffer
2^nd part of SOF not
correctly received
Wait for 2^nd part of
SOF
2^nd part of SOF correctly received
(between 2 and 3 ETUs)
Error 0x66
stored in Buffer
EGT incorrect
Receive data
Framing error or
EOF received
Error 0x8A
stored in Buffer
NO
EOF received?
YES
Error 0x62
stored in Buffer
NO
Nbt Byte > Nemd
YES
NO
CRC error
YES
NO
NemdRes = 0?
YES
Return code 0x80 or
0xA0 or 0xC0
(CRC error bit is set)
Return code 0x80 or
0xA0, or 0xC0
(reception OK)
Return code 0x67
Return code 0x87
Return code 0x80 or
0xA0 or 0xC0
(CRC error bit is set)
End of Algorithm
Return Flag + Data or Error
code
Figure 13: MLX90132 EMD Algorithm Reader/Writer ISO14443 Type B
3901090132
Rev. 009
Page 36 of 44
Jan-2014