DRV10975 Datasheet, PDF (40/57 Pages) Texas Instruments – 12-V, Three-Phase, Sensorless BLDC Motor Driver

DRV10975
SLVSCP2 – JANUARY 2015
www.ti.com
9.5.3 Register Definition
Table 8. Default EEPROM
Value
Address
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
Default Value
0x4A
0x4E
0x2A
0x00
0x98
0xE4
0x7A
0xFC
0x69
0xB7
0xAD
0x0C
Table 9. Register Description
Register
Name
Address Bits
Data
SpeedCtrl1 ⁽¹⁾
0x00 7:0 SpdCtrl[7:0]
SpeedCtrl2 ⁽¹⁾
0x01
7 OverRide
6:1 N/A
0 SpdCtrl [8]
DevCtrl ⁽¹⁾
EECtrl ⁽¹⁾
Status ⁽²⁾
0x02
0x03
0x10
7:0 enProgKey[7:0]
7 sleepDis
6 SIdata
5 eeRefresh
4 eeWrite
3:0 N/A
7 OverTemp
6 Slp_Stdby
5 OverCurr
4 MtrLck
3 N/A
2 N/A
1 N/A
0 N/A
Description
8 LSB of a 9-bit value used for the motor speed.
If OverRide = 1, the user can directly control the motor speed by writing to the
register through I²C.
Use to control the SpdCtrl [8:0] bits. If OverRide = 1, the user can write the speed
command through I²C.
N/A
MSB of a 9-bit value used for the motor speed.
If OverRide = 1, user can directly control the motor speed by writing to the
register through I²C.
The MSB should be written first. Digital takes a snapshot of the MSB when LSB
is written to.
8-bit byte use to enable programming in the EEPROM.
To program the EEPROM, enProgKey = ‘1011 0110’ (0xB6), followed
immediately by eeWrite = 1. Otherwise, enProgKey value is reset.
Set to 1 to disable entering into sleep or standby mode.
Set to 1 to enable the writing to the configuration registers.
Copy EEPROM data to register.
Bit used to program (write) to the EEPROM.
N/A
Bit to indicate device temperature is over its limits.
Bit to indicate that device went into sleep or standby mode.
Bit to indicate that an overcurrent event happened. This is a sticky bit, once
written, it stays high even if overcurrent signal goes low. This bit is cleared on
Read.
Bit to indicate that the motor is locked.
N/A
N/A
N/A
N/A
(1) R/W
(2) Read only
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