AK7401 Datasheet, PDF (18/29 Pages) Asahi Kasei Microsystems – Rotary Position Sensor IC

[AK7401]
8) R_ABNRM (Addr. 0x07)
DATA[11:0]
11
10
9
8
7
6
5
4
3
2
1
0
R_ABNRM[11:0]
These registers contain the configuration data for the self-diagnostic functions. To disable a specific
diagnostic function, the corresponding bit should be set to “1”.
R_ABNRM[11:0]
Description
R_ABNRM[11]
R_ABNRM[10]
R_ABNRM[9]
R_ABNRM[8]
R_ABNRM[7]
R_ABNRM[6]
R_ABNRM[5]
R_ABNRM[4]
R_ABNRM[3]
R_ABNRM[2]
R_ABNRM[1]
R_ABNRM[0]
Diagnostic for over excessive voltage supply
Diagnostic for over or under voltage supply
Diagnostic for EEPROM write sequence
Diagnostic for dispersion of averaging data set
Diagnostic for EEPROM reload sequence
Diagnostic for deviation from normal PWM duty cycle range
Diagnostic for over or under the magnetic flux density
Diagnostic for analog signal sequence
Diagnostic for mismatch between the configuration register and the
transfer buffer register
Diagnostic for mismatch between the transfer buffer register and
EEPROM
Diagnostic for mismatch among the triple-redundant EEPROM
Diagnostic for IC startup sequence
Default
0
0
0
0
0
0
0
0
0
0
0
0
9) R_MFDRH (Addr. 0x08)
DATA[11:0]
11
10
9
8
7
6
5
4
3
2
1
0
-
R_MFDRH[7:0]
These registers contain the configuration data for upper limit of the magnetic flux density. This data is
used as a reference for the magnetic flux density diagnostics. The default setting is “0x50”
(approximately 80mT). The data resolution is about 1mT.
R_MFDRH level should be more than R_MFDRL level.
10) R_MFDRL(Addr. 0x09)
DATA[11:0]
11
10
9
8
7
6
5
4
3
2
1
0
-
R_MFDRL[7:0]
These registers contain the configuration data for lower limit of the magnetic flux density. This data is
used as a reference for the magnetic flux density diagnostics. The default setting is “0x05”
(approximately 5mT). The data resolution is about 1mT.
R_MFDRL level should be less than R_MFDRH level.
014002685-E-01
- 18 -
2015/07