Page 22 ams Datasheet
Document Feedback [v2-06] 2014-Oct-14
AS5055A − Error Monitoring
Alarm Bits
Figure 30:
Alarm Bits
Error Status (0x335A)
For detailed information of the Error Status Register please refer
to “Error Monitoring” on page 22.
System Configuration Register 1 (0x3F20)
The gain setting can be configured in system configuration
register 1. This register contains factory settings. To change the
gain setting, read out the register, modify the gain setting and
write the new configuration. The factory settings must not be
changed.
Figure 31:
System Configuration Register
The correct operation and communication of the AS5055A is
ensured by several error flags. Every read access is supported
by a communication error flag (EF) to indicate a transmission
error in a previous host transmission.
For additional information on the Error Status, please refer to
the application note AN5000_ErrorMonitoring.
Alarm Hi Alarm Lo Description
00
AGC level is higher than the minimum value and lower than the maximum
value.
0 1 AGC level is higher than the maximum level. The magnetic field is too weak.
1 0 AGC level is lower than the minimum level. The magnetic field is too strong.
11
Indicates if a major system error has occurred during the last READ ANGLE
command or if the WOW flag is active. During active WOW a READ ANGLE
command must not be sent. Error flags can be read out with the
error status register.
Name Read/Write Bit Position Description
Resolution R 13:12 00 indicates 12 bit resolution
Chip ID R 11:9 Silicon version 010
Factory Setting R/W 8:5 Don't change
Gain R/W 4:3 Sets gain setting
Factory Setting R/W 2:0 Don't change
