MLX90132 Datasheet, PDF (13/44 Pages) Melexis Microelectronic Systems – 13.56MHz RFID / NFC Transceiver

MLX90132
13.56MHz RFID / NFC Transceiver
6.3 IDN command (0x01)
The IDN command gives information about the MLX90132 and the internal firmware version
IDN0x01
Direction
MCU – device
device - MCU
Data
01
00
00
<Len>
<Device ID>
<ROM CRC>
Comment
Command code
Length of data
Result code
Length of data
Data in ASCII format
CRC calculated for ROM content
Example
0100
000F4E4643204653324A41535434002ACE:
4E4643204653324A4153543400= Device ID
2ACE= CRC of internal ROM
Table 6: “IDN” command description
Note: It takes about 6ms to calculate the CRC for the entire ROM. Application must allow sufficient time
before waiting for an answer for this command.
6.4 Protocol select command (0x02)
The “Protocol Select” command automatically configures the internal registers of the MLX90132 for the best
communication performances. It also prepares the MLX90132 by automatically setting the HF field ON
(except in TAG emulation state). The field will be automatically switched OFF either by sending a “Protocol
select” command with “Field OFF”, or when the MLX90132 returns to “Idle” mode using the “Idle” command
or by selecting TAG emulation.
Protocol Select 0x02
Direction
Data
02
<Len>
MCU – device
<Protocol>
Comment
Command code
Length of data
Protocol codes (Reader)
00 = Field OFF
01 = ISO/IEC15693
02 = ISO/IEC14443-A / NFC-A
03 = ISO/IEC14443-B / NFC-B
04 = ISO/IEC18092 (212,424Kbps) / NFC-F
Example
Refer to examples in table:
Table 8, below
Device - MCU
Device - MCU
Device - MCU
Protocol codes (TAG)
12 = ISO/IEC14443-A/ NFC-A
13 = ISO/IEC14443-B / NFC-B
14 = ISO/IEC18092 (212,424kbps)/ NFC-F
<Parameters> Depends on protocol selected, refer to Table 8
00
Result code
00
Length of data
0000–Protocol successfully selected
82
Error code
00
Length of data
8200- Invalid command length
83
Error code
00
Length of data
8300 - Invalid protocol
Table 7: “Protocol select” command description
3901090132
Rev. 009
Page 13 of 44
Jan-2014