DRV10975ZPWPR datasheet(44/65 Pages) TI1

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DRV10975, DRV10975Z

SLVSCP2E – JANUARY 2015 – REVISED MAY 2018

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Table 9. Register Description (continued)

Data

Description

Name

Address

Bits

(3)

EEPROM

Motor Speed1(2)

0x11

7:0

MotorSpeed [15:8]

16-bit value indicating the motor speed. Always read the MotorSpeed1 first.

Velocity (Hz) = {MotorSpeed1:MotorSpeed2} / 10

For example: MotorSpeed1 = 0x01, MotorSpeed2 = 0xFF,

Motor Speed = 0x01FF (511) / 10 = 51 Hz

Motor Speed2(2)

0x12

7:0

MotorSpeed [7:0]

Motor Period1(2)

0x13

7:0

MotorPeriod [15:8]

16-bit value indicating the motor period. Always read the MotorPeriod1 first.

tELE_PERIOD (µs) = {MotorPeriod1:MotorPeriod2} × 10

For example: MotorPeriod1 = 0x01, MotorPeriod2 = 0xFF,

Motor Period = 0x01FF (511) × 10 = 5.1 ms

Motor Period2(2)

0x14

7:0

MotorPeriod [7:0]

MotorKt1(2)

0x15

7:0

MotorKt[15:8]

16-bit value indicating the motor measured velocity constant. Always read the

MotorKt1 first.

Ktc (V/Hz)= {MotorKt1:MotorKt2} / 2 /1090

{MotorKt1:MotorKt2} corresponding to 2 × Ktph_dig

MotorKt2(2)

0x16

7:0

MotorKt[7:0]

IPDPosition(2)

0x19

7:0

IPDPosition [7:0]

8-bit value indicating the estimated motor position during IPD plus the IPD

advance angle (see Table 7)

Supply

Voltage(2)

0x1A

7:0

SupplyVoltage [7:0]

8-bit value indicating the supply voltage

VPOWERSUPPLY (V) = SupplyVoltage[7:0] × 22.8 V / 256

For example, SupplyVoltage[7:0] = 0x87,

VPOWERSUPPLY (V) = 0x87 (135) × 22.8 / 256 = 12 V

SpeedCmd(2)

0x1B

7:0

SpeedCmd[7:0]

8-bit value indicating the speed command based on analog or PWMin or I2C.

FF indicates 100% speed command.

spdCmd

Buffer(2)

0x1C

7:0

spdCmdBuffer [8:1]

8-bit value indicating the speed command after buffer output.

FF indicates 100% speed command.

FaultCode(2)

0x1E

7:6

N/A

Lock5

Stuck in closed loop

Lock4

Stuck in open loop

Fault3

No motor

Lock2

Kt abnormal

Lock1

Speed abnormal

Lock0

Lock detection current limit

Motor Param1(3)

0x20

DoubleFreq

0 = Set driver output frequency to 25 kHz

1 = Set driver output frequency to 50 kHz

6:0

Rm[6:0]

Rm[6:4] : Number of the Shift bits of the motor phase resistance

Rm[3:0] : Significant value of the motor phase resistance

Rmdig = R_(ph_ct) / 0.00735

Rmdig = Rm[3:0]

≪ Rm[6:4] See Motor Phase Resistance and Table 2

Motor Param2(3)

0x21

AdjMode

Closed loop adjustment mode setting

0 = Full cycle adjustment

1 = Half cycle adjustment

6:0

Kt[6:0]

Kt[6:4] = Number of the Shift bits of BEMF constant

Kt[3:0] = Significant value of the BEMF constant

〖Kt〗_(ph_dig) = 1442×〖Kt〗_ph

〖Kt〗_(ph_dig) = Kt[3:0] ≪ Kt[4:6]

See BEMF Constant and Table 3 .

Motor Param3(3)

0x22

CtrlAdvMd

Motor commutate control advance

0 = Fixed time

1 = Variable time relative to the motor speed and VCC

6:0

Tdelay[6:0]

tdelay [6:4] = Number of the Shift bits of LRTIME

tdelay [3:0] = Significant value of LRTIME

tSETTING = 2.5 µs × {TCtrlAdv[3:0] << TCtrlAdv[6:4]}

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