DVK90129 Melexis Inc, DVK90129 Datasheet - Page 36

• 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

9.1.4 Direct Memory Access configuration
DMA configuration words (EEPROM & Register, address #09 to #0C, read/write)
*
should be taken to not overwrite the configuration value in EEPROM [from #00 to #28]. For this reason:
is 0x29) in order to not exceed the address 0xFF
3901090129
Rev 007
Bits
#09 – DMA Control word
15:12
15
14
13
12
10:11
9
8
7:6
5:4
3
2
1
0
#0A – DMA: Source start address
15:0
#0B – DMA: Destination start address
15:0
#0C – DMA: Length
15:0
/!\ in case of datalogger application with sensor data logged into the MLX90129 internal EEPROM, care
•
•
DMA_Destination_Address should be at least 0x29
DMA_Data_Length should have the maximum value of 0xD7 ( in case of DMA_Destination_Address
Name
DMA_Time_Incl
DMA_Sensor2_Incl
DMA_Sensor1_Incl
DMA_Sensor0_Incl
DMA_LastWordMask
DMA_FirstWordMask
DMA_DestinationCode
DMA_SourceCode
DMA_LoopEn
DMA_IrqDataReady_En
DMA_Hold
DMA_Processing_Control
DMA_Source_Address
DMA_Destination_Address
DMA_Data_Length
Description
Sensing sequence
include the iteration index (time stamp) in the memory
include the measurement and the storing of sensor 2
include the measurement and the storing of sensor 1
include the measurement and the storing of sensor 0
Reserved (must be 00)
Disable the copying of the LSB (byte) of the last word in the
datalogging sequence in the external EEPROM
Disable the copying of the MSB (byte) of the first word in the
datalogging sequence in the external EEPROM
Destination of the data transfer
00 : register file
01 : internal EEPROM*
10 : SPI as master (external EEPROM)
11 : (reserved)
Source of the data transfer
00 :
01 : internal EEPROM
10 : SPI as master (external EEPROM)
11 : Sensor interface
Enable an eternal loop of data logging. In this case, after having
copied Length words, the DMA unit does not stop its operation but
sets its address to the initial one and goes on copying data.
IRQ Data-transfer enabled. The IRQ signal is set when the data
transfer has been completed.
Hold. The DMA holds its operation till this bit goes low. The current
ongoing DMA transaction is always completed.
Manual processing control.
‘0’: Manual stop of DMA (used for automatic data-logging )
‘1’: Manual start of DMA (not for automatic data-logging)
Address of the first word to be copied from the source device.
Address of the first word to be filled into the destination
Length of the block to be copied (in
13.56MHZ SENSOR TAG / DATALOGGER IC
(reserved)
Page 36 of 56
(when bit = ‘1’)
words).*
MLX90129
Data Sheet
March 2011
device.*