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DRV8889-Q1 Datasheet(PDF) 50 Page - Texas Instruments

Part No. DRV8889-Q1
Description  DRV8889-Q1, DRV8889A-Q1 Automotive Stepper Driver with Integrated Current Sense, 1/256 Micro-Stepping, and Stall Detection
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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DRV8889-Q1 Datasheet(HTML) 50 Page - Texas Instruments

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Table 7-26. CTRL3 Control Register Field Descriptions (continued)
Bit
Field
Type
Default
Description
5
SPI_DIR
R/W
0b
0b = Outputs follow input pin for DIR
1b = Outputs follow SPI registers DIR
4
SPI_STEP
R/W
0b
0b = Outputs follow input pin for STEP
1b = Outputs follow SPI registers STEP
3-0
MICROSTEP_MODE [3:0]
R/W
0000b
0000b = Full step (2-phase excitation) with 100% current
0001b = Full step (2-phase excitation) with 71% current
0010b = Non-circular 1/2 step
0011b = 1/2 step
0100b = 1/4 step
0101b = 1/8 step
0110b = 1/16 step
0111b = 1/32 step
1000b = 1/64 step
1001b = 1/128 step
1010b = 1/256 step
1011b to 1111b = Reserved
7.6.9 CTRL4 Control Register (address = 0x06)
CTRL4 is shown in Figure 7-40 and described in Table 7-27.
Read/Write
Figure 7-40. CTRL4 Control Register
7
6
5
4
3
2
1
0
CLR_FLT
LOCK [2:0]
EN_OL
OCP_MODE
OTSD_MODE
TW_REP
R/W-0b
R/W-011b
R/W-0b
R/W-0b
R/W-0b
R/W-0b
Table 7-27. CTRL4 Control Register Field Descriptions
Bit
Field
Type
Default
Description
7
CLR_FLT
R/W
0b
Write '1' to this bit to clear all latched fault bits. This bit
automatically resets after being written.
6-4
LOCK [2:0]
R/W
011b
Write 110b to lock the settings by ignoring further register writes
except to these bits and address 0x06h bit 7 (CLR_FLT). Writing
any sequence other than 110b has no effect when unlocked.
Write 011b to this register to unlock all registers. Writing any
sequence other than 011b has no effect when locked.
3
EN_OL
R/W
0b
Write '1' to enable open load detection
2
OCP_MODE
R/W
0b
0b = Overcurrent condition causes a latched fault
1b = Overcurrent condition causes an automatic retrying fault
1
OTSD_MODE
R/W
0b
0b = Overtemperature condition will cause latched fault
1b = Overtemperature condition will cause automatic recovery
fault
DRV8889-Q1
SLVSEE9C – APRIL 2020 – REVISED AUGUST 2020
www.ti.com
50
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Product Folder Links: DRV8889-Q1


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