MLX90132 Datasheet, PDF (35/44 Pages) Melexis Microelectronic Systems – 13.56MHz RFID / NFC Transceiver

MLX90132
13.56MHz RFID / NFC Transceiver
Start ISO14443 Type A
Reception
Initialize CRC calculation
Error 0x61
SOF error or
invalid
stored in Buffer
Wait for SOF
Reception Timeout (FDT expires)
YES, Valid SOF received
Error 0x87 returned
Store received data
& wait for EOF
YES, Valid EOF received
NO, data received equals to an entire nbr of
symbols (1Byte + Parity bit)
Residual bits found?
YES, data received NOT equal to an
entire nbr of symbols (1Byte + Parity bit)
Return code 0x90 or 0xB0
or 0xD0 (Data Rx without
an integer nbr of byte)
NO
Nbr of Byte >
NemdRes?
YES
NO, Manchester
violation detected
Successful data
received?
YES
CRC error?
NO
YES
Return code 0x80 or
0xA0, or 0xC0
(reception OK)
Nbr of Byte <
Nemd?
YES
Error 0x62 stored
in Buffer
Return code 0x80 or
0xA0 or 0xC0
(CRC error bit is set)
End of Algorithm
Return Flag + Data or Error
code
Figure 12: MLX90132 EMD Algorithm Reader/Writer ISO14443 Type A
3901090132
Rev. 009
Page 35 of 44
Jan-2014