DVK90129 Melexis Inc, DVK90129 Datasheet - Page 50

• Manufacturer Part Number: DVK90129
• Description: DEVELOPMENT KIT MLX90129
• Manufacturer: Melexis Inc
• Series: -r
• Type: Development kitr

Specifications of DVK90129

• Contents: Board, Proxima RF™ Desktop Reader
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: MLX90129

9.4.1 Communication security
The Device Security Register is stored in the EEPROM. It contains the access rights to the different
memories by the RFID interface. It allows a partial or complete disabling of the RFID interface. In addition, it
controls the functionality of the SPI by making it master or slave.
Device security map configuration register (EEPROM & Register, address #05, Read/Write)
Bits
#05 - Device security map
15:14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
9.4.2 EEPROM Access security
The access to the EEPROM words is protected depending on their content. Three security levels have been
defined and can be chosen for any EEPROM page. If any external device tries to access via SPI a memory
location without permission, it obtains value 0xFFFF as result. Via RFID, the error response is defined by the
standard ISO15693.
3901090129
Rev 007
Security
level
L0
L1
L2
L3
9.4 Security
*note: if the write-access is allowed, the read-access is also allowed, independently of the value of the
read access bit
** when disabled the MLX90129 does not answer to the command “LOCK DEVICE”
•
Name
-
Rfid_Page0Read
Rfid_Page0Write
Rfid_EEpViaDma
Rfid_Adc_Access
Rfid_ Int_Read
Rfid_ Int_Write
Rfid_EEl_Read
Rfid_EEl_Write
Rfid_Reg_Read
Rfid_Reg_Write
Rfid_Lock_Dis
Rfid_LockUn_En
Rfid_Dis
Spi_Master
Definition of the different security levels
Code
00
01
10
11
Write access
SPI, DMA
SPI, DMA
SPI, RFID, DMA
Reserved
Description (when bit = 1)
Reserved (must be 00)
Allow read access to Register file page 0 for RFID.
Allow write access to Register file page 0 for RFID.*
Allows RFID access to internal EEPROM via DMA.
Allow access to ADC buffer for RFID
Allow a read access to the external memory by RFID
Allow a read & write access to the external memory by RFID *
Allow a read access to EE-Latches by RFID
Allow a read & write access to EE-Latches by RFID *
Allow a read access to the Register file page 1by RFID
Allow a read & write access to the Register file page 1 by RFID *
Disable the RFID Core-lock access function
Disable RFID lock device / unlock device functionality**
Disable the RFID communication media
SPI slave disable. Disable SPI-slave and enable activity of SPI-master.
Read access
SPI, DMA
SPI, RFID, DMA
SPI, RFID, DMA
Reserved
13.56MHZ SENSOR TAG / DATALOGGER IC
Page 50 of 56
Typical application
UID and security configuration
Register file initial configuration, data logging
Customer ID, Unlocked User Data
MLX90129
Data Sheet
March 2011