MLX90363 Datasheet, PDF (32/57 Pages) Melexis Microelectronic Systems – Triaxis® Magnetometer IC With High Speed Serial Interface

MLX90363
Triaxis® Magnetometer IC
With High Speed Serial Interface
14.16. MemoryRead message
#7 6 5 4 3 2 1 0 # 7 6 5 4 3 2 10
1
ADD0[15:8]
0
ADD0[7:0]
3
ADD1[15:8]
2
ADD1[7:0]
5
4
7
CRC
611000001
Table 34 – MemoryRead Master-Out Slave-In Message (Opcode = 1)
MemoryRead returns two EEPROM or RAM words respectively pointed by the parameters ADDR0,
ADDR1.
• The parameter ADDRx has three valid ranges: 0…254 for RAM access, 0x1000...0x103E for
EEPROM access, and 0x4000…0x5FFE for ROM access
MSC MemoryRead
Master
Slave
Loop
MemoryRead ( )
X ()
MemoryRead ( )
MemoryRead ()
Next Cmd ( )
MemoryRead ()
Figure 18 – MSC for RAM/ROM/EEPROM Memory Read
Note: Enter the loop for complete memory dumps.
MemoryRead Master-In Message (opcode 0x02)
The address Addr may be valid or not:
Case of validity: MemoryRead returns normally the data word pointed by Addr
Case of invalidity: MemoryRead returns DataWord = 0.
Note: FW makes sure that invalid addresses do not cause memory access violation
#7 6 5 4 3 2 1 0 # 7 6 5 4 3 2 10
1
DATA[15:8] AT ADD0
0
DATA[7:0] AT ADD0
3
DATA[15:8] AT ADD1
2
DATA[7:0] AT ADD1
5
4
7
CRC
611000010
Table 35 – MemoryRead MISO Packet (Opcode = 2)
3901090363
Rev. 005
Page 32 of 57
Data Sheet
Jul/13