MLX90132 Datasheet, PDF (12/44 Pages) Melexis Microelectronic Systems – 13.56MHz RFID / NFC Transceiver

MLX90132
13.56MHz RFID / NFC Transceiver
6 Commands
6.1 Command format
The structure of the command sent by the application is almost identical to the structure of the answer from
the MLX90132, as shown below:
 Command: [CMD] + [LEN] + [DATA]
 Answer:
[RESPCODE] + [LEN] + [DATA]
- [CMD] = Command (1byte)
- [LEN] = Length including only the field DATA, zero if no data sent (1byte)
- [RESPCODE] = Response code, depends on the command (1byte)
- [DATA] = Data information, depends on the command (0 to 528bytes)
6.2 List of commands
Code Command
Description
0x01
0x02
0x03
0x04
0x05
IDN
Requests short information about device and its FW version
Protocol Select
Selects communication protocol and specifies some protocol-related
parameters
Poll field Returns the current value of the field detector flag (“FieldDet”)
SendRecv
Sends data using previously selected protocol and receives the response of
the TAG.
Listen
Listens to the data using previously selected protocol.
0x06
0x07
0x0A
Send
Idle
BaudRate
Sends data using previously selected protocol.
Switches device into Idle/Sleep/Hibernate mode and specifies which
condition is used to exit from these modes
Sets UART baud rate
0x0B
SubFreqRes
Gets the last value of sub-carrier frequency received during ISO/IEC18092
and NFC Tag Type 3 (Felica) communications
0x0D
AC-Filter Activates/deactivates anti-collision filter
0x55
Echo
MLX90132 replies with an Echo of 0x55 to this command. In this specific
case, the command format is not respected as the data is only 0x55
Other codes
MELEXIS reserved
Table 5: MLX90132 list of commands
3901090132
Rev. 009
Page 12 of 44
Jan-2014