DRV10987 Datasheet, PDF (46/69 Pages) Texas Instruments – DRV10987 12- to 24-V, Three-Phase, Sensorless BLDC Motor Driver

DRV10987
SLVSE89 – AUGUST 2017
Bit Field
5
Lock5
4
Lock4
3
Lock3
2
Lock2
1
Lock1
0
Lock0
Table 10. FaultReg Register Field Descriptions (continued)
Type
R/W1C
R/W1C
R/W1C
R/W1C
R/W1C
R/W1C
Reset
0
0
0
0
0
0
Description
Stuck in closed loop fault
Stuck in open loop fault
No motor fault
Kt abnormal fault
Speed abnormal fault
Hardware current-limit fault
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8.5.3.2 MotorSpeed Register (address = 0x01) [reset = 0x00]
Figure 43. MotorSpeed Register
15
14
13
12
11
10
9
MotorSpeed[15] MotorSpeed[14] MotorSpeed[13] MotorSpeed[12] MotorSpeed[11] MotorSpeed[10] MotorSpeed[9]
R-0
R-0
R-0
R-0
R-0
R-0
R-0
8
MotorSpeed[8]
R-0
7
MotorSpeed[7]
R-0
6
MotorSpeed[6]
R-0
5
MotorSpeed[5]
R-0
4
MotorSpeed[4]
R-0
3
MotorSpeed[3]
R-0
2
MotorSpeed[2]
R-0
1
MotorSpeed[1]
R-0
0
MotorSpeed[0]
R-0
Bit Field
15:0 MotorSpeed[15:0]
Table 11. MotorSpeed Register Field Descriptions
Type
R
Reset
0x00
Description
16-bit value indicating the motor speed.
Motor speed in Hz = MotorSpeed[15:0] / 10
8.5.3.3 MotorPeriod Register (address = 0x02) [reset = 0x00]
Figure 44. MotorPeriod Register
15
14
13
12
11
10
9
MotorPeriod[15] MotorPeriod[14] MotorPeriod[13] MotorPeriod[12] MotorPeriod[11] MotorPeriod[10] MotorPeriod[9]
R-0
R-0
R-0
R-0
R-0
R-0
R-0
7
MotorPeriod[7]
R-0
6
MotorPeriod[6]
R-0
5
MotorPeriod[5]
R-0
4
MotorPeriod[4]
R-0
3
MotorPeriod[3]
R-0
2
MotorPeriod[2]
R-0
1
MotorPeriod[1]
R-0
8
MotorPeriod[8]
R-0
0
MotorPeriod[0]
R-0
Bit Field
15:0 MotorPeriod[15:0]
Table 12. MotorPeriod Register Field Descriptions
Type
R
Reset
0x00
Description
16-bit value indicating the motor period.
Motor period = MotorPeriod[15:0] × 10 = period in μs
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