DRV10983-Q1 Datasheet, PDF (43/72 Pages) Texas Instruments – Automotive, Three-Phase, Sensorless BLDC Motor Driver

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DRV10983-Q1
SLVSD14 – JUNE 2017
8.5 Register Maps
8.5.1 I²C Serial Interface
The DRV10983-Q1 device provides an I²C slave interface with slave address 101 0010. TI recommends a pullup
resistor of 4.7 kΩ to 3.3 V for I²C interface ports SCL and SDA. The protocol for the I²C interface is given in
Figure 42.
I2C Write
Start
7 bit Slave Add
R/W=0 ACK 8 bit Reg Add
ACK 8 bit Data ACK 8 bit Data ACK
Stop
Internal Reg
write happens
I2C Read
Start
7 bit Slave Add
R/W=0 ACK 8 bit Reg Add
ACK
Start
7 bit Slave Add
R/W=1 8 bit Data ACK 8 bit Data ACK Stop
Data from Reg is
loaded to the buffer
Figure 42. I²C Protocol
Seven read/write registers (0x30:0x36) are used to set motor speed and control device registers and EEPROM.
Device operation status can be read back through nine read-only registers (0x0:0x08). Another seven EEPROM
registers (0x90:0x96) can be accessed to program motor parameters and optimize the spin-up profile for the
application.
8.5.2 Register Map
REGISTER
NAME
FaultReg ⁽¹⁾⁽²⁾
ADDR.
0x00
MotorSpeed ⁽¹⁾
MotorPeriod ⁽¹⁾
MotorKt ⁽¹⁾
MotorCurrent ⁽¹⁾
0x01
0x02
0x03
0x04
IPDPosition /
SupplyVoltage ⁽¹⁾
SpeedCmd /
spdCmdBuffer ⁽¹⁾
AnalogInLvl ⁽¹⁾
0x05
0x06
0x07
Device ID /
Revision ID ⁽¹⁾
SpeedCtrl ⁽³⁾
0x08
0x30
EEPROM
0x31
Programming1 ⁽³⁾
D15
D7
OverTemp
V3P3_UVL
O
D14
D6
TempWarni
ng
Reserved
OverRide
D13
D5
VCC_OV
D12
D4
VREG_OC
D11
D3
OverCurr
Lock5
Lock4
Lock3
MotorSpeed[15:0]
MotorPeriod[15:0]
MotorKt[15:0]
Reserved
MotorCurrent[7:0]
IPDPosition[7:0]
SupplyVoltage[7:0]
SpeedCmd[7:0]
spdCmdBuffer[7:0]
Reserved
commandSenseAdc[7:0]
DieID[7:0]
RevisionID[7:0]
Reserved
SpeedCtrl[7:0]
ENPROGKEY[15:0]
D10
D2
CP_UVLO
Lock2
D9
D8
D1
D0
VREG_UVL VCC_UVLO
O
Lock1
Lock0
MotorCurrent[10:8]
commandSenseAdc[9:8]
SpeedCtrl[8
]
(1) Read only
(2) Fault Register requires 0xFF to be written to the register to clear the bits.
(3) R/W
Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: DRV10983-Q1
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