AS5263
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.1.5
READ128
Figure 19 illustrates the format of the frame and the command.
Figure 19. Frame Organization of the READ128 Command
DO NOT CARE
DO NOT CARE
CMD
LSB
MSB
LSB
MSB
LSB
0
1
0
MSB
1
DATA1
DATA0
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA3
DATA2
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA5
DATA4
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA7
DATA6
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA9
DATA8
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA11
DATA10
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA13
DATA12
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
DATA15
DATA14
CMD DUMMY
LSB
MSB
LSB
MSB
0
0
0
P
The command is composed by a first frame transmitted to the AS5263. The device is in slave communication mode. The device remains for the
time T SWITCH in IDLE mode before changing into the master communication mode. The AS5263 starts to send 8 frames. This command will read
the SFRs. The numbering of the data bytes correlates with the address of the related SFR.
An even parity bit is used to guarantee a correct data transmission. Each parity (P) is related to the frame data content of the 16 bit word. The
MSB of the CMD dummy (P) is reserved for the parity information.
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