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DRV8889-Q1 Datasheet(PDF) 50 Page - Texas Instruments |
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DRV8889-Q1 Datasheet(HTML) 50 Page - Texas Instruments |
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50 / 88 page  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 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: DRV8889-Q1 |
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