MLX90132 datasheet(13/44 Pages) MELEXIS

13 / 44 page

MLX90132

13.56MHz RFID / NFC Transceiver

3901090132

Page 13 of 44

Jan-2014

Rev. 009

6.3 IDN command (0x01)

The IDN command gives information about the MLX90132 and the internal firmware version

IDN0x01

Direction

Data

Comment

Example

MCU – device

Command code

0100

Length of data

device - MCU

Result code

000F4E4643204653324A41535434002ACE:

4E4643204653324A4153543400= Device ID

2ACE= CRC of internal ROM

<Len>

Length of data

Data in ASCII format

CRC calculated for ROM content

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

Comment

Example

MCU – device

Command code

Refer to examples in table:

Table 8

, below

<Len>

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

Protocol codes (TAG)

12 = ISO/IEC14443-A/ NFC-A

13 = ISO/IEC14443-B / NFC-B

14 = ISO/IEC18092 (212,424kbps)/ NFC-F

Depends on protocol selected, refer to Table 8

Device - MCU

Result code

0000–Protocol successfully selected

Length of data

Device - MCU

Error code

8200- Invalid command length

Length of data

Device - MCU

Error code

8300 - Invalid protocol

Length of data

Table 7: “Protocol select” command description

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