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L6472 数据表(PDF) 49 Page - STMicroelectronics |
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L6472 数据表(HTML) 49 Page - STMicroelectronics |
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49 / 69 page ![]() L6472 Programming manual Doc ID 022729 Rev 1 49/69 The synchronization signal is obtained starting from the electrical position information (EL_POS register) according to Table 21: Table 20. SYNC output frequency STEP_SEL (fFS is the full-step frequency) 000 001 010 011 100 101 110 111 000 fFS/2 fFS/2 fFS/2 fFS/2 fFS/2 fFS/2 fFS/2 fFS/2 001 NA fFS fFS fFS fFS fFS fFS fFS 010 NA NA 2· fFS 2· fFS 2· fFS 2· fFS 2· fFS 2· fFS 011 NA NA NA 4· fFS 4· fFS 4· fFS 4· fFS 4· fFS 100 NA NA NA NA 8· fFS 8· fFS 8· fFS 8· fFS 101 NA NA NA NA NA NA NA NA 110 NA NA NA NA NA NA NA NA 111 NA NA NA NA NA NA NA NA Table 21. SYNC signal source SYNC_SEL[2..0] Source 0 0 0 EL_POS[7] 0 0 1 EL_POS[6] 0 1 0 EL_POS[5] 0 1 1 EL_POS[4] 1 0 0 EL_POS[3] 1 0 1 UNUSED (1) 1. When this value is selected the BUSY output is forced low. 1 1 0 UNUSED (1) 1 1 1 UNUSED (1) |
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