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DRV8461SPWPR 数据表(PDF) 85 Page - Texas Instruments |
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DRV8461SPWPR 数据表(HTML) 85 Page - Texas Instruments |
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85 / 117 page  Figure 7-76. INDEX3 Register (continued) R-10000000b Table 7-58. INDEX3 Register Field Descriptions Bit Field Type Default Description 7-0 CUR_B_POS[7:0] R 10000000b Indicates the position of coil B current in the indexer table. 7.5.3.4 INDEX4 (address = 0x14) [Default = 82h] INDEX4 is shown in Figure 7-77 and described in Table 7-59. Read only Return to the Register Maps Table Figure 7-77. INDEX4 Register 7 6 5 4 3 2 1 0 CUR_B_SIGN RSVD CUR_A[1:0] R-1b R-00000b R-10b Table 7-59. INDEX4 Register Field Descriptions Bit Field Type Default Description 7 CUR_B_SIGN R 1b Outputs the sign of coil B current for the position indicated by the CUR_B_POS bits. 1b = Coil B current is positive 0b = Coil B current is negative 6-2 RSVD R 00000b Reserved 1-0 CUR_A[1:0] R 10b Lower two LSBs of the current in coil A 7.5.3.5 INDEX5 (address = 0x15) [Default = B5h] INDEX5 is shown in Figure 7-78 and described in Table 7-60. Read only Return to the Register Maps Table Figure 7-78. INDEX5 Register 7 6 5 4 3 2 1 0 CUR_A[9:2] R-10110101b Table 7-60. INDEX5 Register Field Descriptions Bit Field Type Default Description 7-0 CUR_A[9:2] R 10110101b Outputs the upper 8 bits of the current in coil A 7.5.4 Custom Microstepping Registers The custom microstep registers store the current values corresponding to the first quadrant of coil A current. Custom microstep registers are read and write capable. Table 7-61 lists the memory-mapped registers for the custom microstep registers. All register offset addresses not listed in Table 7-61 should be considered as reserved locations and the register contents should not be modified. www.ti.com DRV8461 SLOSE98 – DECEMBER 2022 Copyright © 2022 Texas Instruments Incorporated Submit Document Feedback 85 Product Folder Links: DRV8461 |
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