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TMP93CS41 датащи(PDF) 164 Page - Toshiba Semiconductor |
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TMP93CS41 датащи(HTML) 164 Page - Toshiba Semiconductor |
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164 / 248 page ![]() TMP93CS40/TMP93CS41 2004-02-10 93CS40-162 Figure 3.10.10 Output Waveforms for 4-phase 2-step Excitation (Normal rotation) The output from PG0 (P6) is latched on the rising edge of the trigger signal from the timer. The direction of shift is specified by the setting of PG01CR<CCW0>: Normal rotation (PG00 →PG01→PG02→PG03) is selected when <CCW0> is set to “0”; reverse rotation (PG00 ←PG01←PG02←PG03) is selected when <CCW0> is set to “1”. 4-phase 1-step excitation will be selected when only one bit is set to “1” during the initialization of PG, while 4-phase 2-step excitation will be selected when two consecutive bits are set to “1”. The value in the shift alternate registers are ignored when 4-phase 1-step/2-step excitation mode is selected. Figure 3.10.11 shows the block diagram. Figure 3.10.11 Block Diagram for 4-phase 1-step Excitation/2-step Excitation (Normal rotation) b4 Trigger signal from timer PG00 (P60) PG01 (P61) PG02 (P62) PG03 (P63) b7 b5 b6 b7 b4 b5 b6 b6 b7 b4 b5 b5 b6 b7 b4 b4 b5 b6 b7 Initial value of PG0REG = 1100×××× PG03 PG03 (P63) PG01 PG02 SA03 SA02 SA01 SA00 PG0 output latch Shift alternate register Indicates that shifting takes place on the rising edge of the trigger signal from the timer. PG00 b7 b3 b6 b2 b5 b1 b4 b0 PG02 (P62) PG01 (P61) PG00 (P60) |
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