DVK90129 Melexis Inc, DVK90129 Datasheet - Page 30

• 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

SPI interrupt & status word (Devices address domain, address #01, read only)
The following table summarizes the information about the interrupts. For each bit of the SPI interrupt & status
word, the condition to assert high or low the status flag, is described. All interrupts can be disabled in
asserting high the bit Irq_Dis of the SPI Core control word.
3901090129
Rev 007
Bits
#01 – SPI interrupt & status word
15:13
12
11
10
9
8
7
6
5
4
3
2
1
0
Interrupt description
Irq_ExternalEvent
Status flag is set to ‘1’ when
Irq_Rfid_Reg_Access
Status flag is set to ‘1’ when
Irq_Rfid_EEp_Access
Status flag is set to ‘1’ when
Irq_Rfid_Field
Status flag is set to ‘1’ when
IRQ enable conditions
IRQ enable conditions
IRQ enable conditions
IRQ enable conditions
Name
(reserved)
Irq_ExternalEvent
(reserved)
Irq_Rfid_Reg_Access
Irq_Rfid_EEp_Access
Irq_Rfid_Field
Irq_Sensor_Threshold
Irq_Timer_WakeUp
Irq_Dma_Ready
Irq_Memory_Full
Irq_Write_Failure
Transaction_Error
Last_Transaction_Status
Core_Main_Status
Reset condition
Reset condition
Reset condition
Reset condition
Set to ‘1’ the bits 9 and 11 of the register #12
Pin AT is not connected to GND
Pin AT is connected to GND
Set to ‘1’ the bit 4 of the internal device #00 (
A RFID reader is accessing the register file
Read the SPI interrupt & status word
Set to ‘1’ the bit 5 of the internal device #00 (
A RFID reader is accessing the EEPROM
Read the SPI interrupt & status word
Set to ‘1’ the bit 6 of the internal device #00 (
A RFID field has been detected, and is strong enough to start a RFID
communication
The RFID field has been removed, or is too low for a RFID communication
Description (if bit=1)
The pin AT has been disconnected from the GND.
The RFID interface is accessing the Register File
The RFID interface is accessing the EEPROM
The magnetic field is high enough to start a RFID communication
The output data from the sensor has crossed the defined threshold
level or window
The count-down of the wake-up is over
The DMA transaction has been completed (in the non-loop mode)
The allocated memory for a datalogging with loop enable is full. The
datalogger starts to overwrite the first data.
The non-volatile block has been written bad or weak: the data is wrong
or its long-term retention is not guaranteed
One of the previously executed commands has failed (read delay,
denied access, data not processed,…). This bit is automatically cleared
after reboot or after read of the SPI interrupt & status word.
This bit indicates whether the last request from SPI has been
processed (‘0’) or not (‘1’). In this latter case, the MLX90129 ignores
any new request from SPI.
The system is busy with an internal operation and the request from SPI
cannot be processed immediately.
13.56MHZ SENSOR TAG / DATALOGGER IC
Page 30 of 56
SPI Core control word)
SPI Core control word)
SPI Core control word)
MLX90129
Data Sheet
March 2011