Melexis MLX90130, Руководство пользователя

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MLX90130
13.56MHz RFID Transceiver
3901090130 Page 13 of 37 Jan-2014
Rev. 004
6.3 IDN command (0x01)
The IDN command gives information about the MLX90130 and the internal firmware version
IDN 0x01
Direction Data Comment Example
MCU – device
01 Command code
0100
00 Length of data
device - MCU
00 Result code
000F4E4643204653324A41535434002ACE:
-
4E4643204653324A4153543400= Device ID
- 2ACE = CRC of internal ROM
<Len> Length of data
<Device ID> Data in ASCII format
<ROM CRC> 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 MLX90130 for the best
communication performances. It also prepares the MLX90130 by automatically setting the HF field ON. The
field will be automatically switched OFF either by sending a “Protocol select” command with “Field OFF”, or
when the MLX90130 returns to “Idle” mode using the “Idle” command.
Protocol Select 0x02
Direction Data Comment Example
MCU – device
02 Command code
Refer to examples in table:
Table 8
,
below
<Len> Length of data
<Protocol>
Protocol codes
00 = Field OFF
01 = ISO/IEC15693
02 = ISO/IEC14443-A
03 = ISO/IEC14443-B
<Parameters> Depends on protocol selected, refer to Table 8
Device - MCU
00 Result code
0000 - Protocol is successfully selected
00 Length of data
Device - MCU
82 Error code
8200- Invalid command length
00 Length of data
Device - MCU
83 Error code
8300 - Invalid protocol
00 Length of data
Table 7: “ Protocol select ” command description