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ST7MC1 数据表(PDF) 165 Page - STMicroelectronics |
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ST7MC1 数据表(HTML) 165 Page - STMicroelectronics |
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165 / 308 page  ST7MC1/ST7MC2 165/308 MOTOR CONTROLLER (Cont’d) Note If only one encoder output is available, it may be input either on MCIA or MCIB and an encoder clock signal will still be generated (in this case the frequency will be 50% less than with two inputs. The state of EDIR bit will depend on signals present on MCIA and MCIB pins, the result will be given by the sampling of MCIA with MCIB falling edges. 10.6.6.14 Summary Input Detection block set-up for the different avail- able modes is summarized in the Table 35. Table 35. Input Detection Block set-up Input Detection Block Mode Sensor Type Edge sensitivity SR bit TES[1:0] bits (Tacho Edge Selection) IS[1:0] bits (Input Selection) Position Sensor Hall, Optical,... Both rising and falling edges 1 00 00 01 10 Sensorless N/A N/A 0 00 00 01 10 Speed Sensor Incremental Encoder Both rising and falling edges (imposed) x Any configuration dif- ferent from 00: 01 10 11 11 Tachogenerator, Hall, Optical... Rising edge 01 00 01 10 Falling edge 10 00 01 10 Both rising and falling edges 11 00 01 10 1 |
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