AS5050
Datasheet - Detailed Description
NOP Command. The NOP command represents a dummy write to the AS5050.
Figure 9. NOP Command
T
COM
MSB
LSB
MSB
LSB
MSB
LSB
MOSI
MISO
NOP
NOP
Next command
Response-1
0x0000
0x0000
MSB
LSB
MSB
LSB
MSB
LSB
Transmission N
Transmission N +1
Transmission N +2
The NOP command frame looks like follows.
Table 13. NOP Command
Bit
MSB
14
13
12
11
10
9
8
7
6
5
4
3
2
1
LSB
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
NOP command (0x0000)
The chip’s response on this command is 0x0000 – if no error happens.
7.2.6 Error Monitoring
The correct operation and communication of the AS5050 is ensured by several particular error flags. Every read access is supported by an error
flag (EF) to indicate a transmission error. In addition a dedicated error status register is accessible. See Table 14 on page 14.
Alarm HI
Alarm LO
Mode Description
AGC level is higher than the minimum value and lower than the maximum value
AGC level is equal or even lower than the minimum level
0
0
1
0
1
0
AGC level is equal or even higher than the maximum level
Indicates if any error flag has occurred. For detailed information, refer to Error Status Command on page
14.
1
1
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