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LM93 датащи(PDF) 68 Page - National Semiconductor (TI) |
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LM93 датащи(HTML) 68 Page - National Semiconductor (TI) |
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68 / 92 page ![]() 16.0 Registers (Continued) 16.8.11 Register C6h PROCHOT Override Register Address Read/ Write Register Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Default Value C6h R/W PROCHOT Override FORCE _P1 FORCE _P2 RES PHT_DC 00h Bit Name R/W Description 3:0 PHT_DC R/W PROCHOT duty cycle select. 5:4 RES R Reserved 6 FORCE_P1 R/W When this is set by software, P1_PROCHOT will be asserted by the LM93 with the duty cycle selected by PHT_DC. 7 FORCE_P2 R/W When this is set by software, P2_PROCHOT will be asserted by the LM93 with the duty cycle selected by PHT_DC. Note that if the P1P2_PROCHOT bit is set to short the Px_PROCHOT pins together, both Px_PROCHOT outputs will be driven together, even if only one of the FORCE_Px bits is set. The period of the PWM signal driven on Px_PROCHOT is 3.56 ms (80 internal 22.5 kHz clocks). The asserted time can be increased in 5 clock increments. 5 clocks is about 220 µs and would represent 6.25% percent throttled. Possible settings for PHT_DC: PHT_DC Asserted Period 0h 5 clocks 1h 10 clocks 2h 15 clocks 3h 20 clocks 4h 25 clocks 5h 30 clocks 6h 35 clocks 7h 40 clocks 8h 45 clocks 9h 50 clocks Ah 55 clocks Bh 60 clocks Ch 65 clocks Dh 70 clocks Eh 75 clocks Fh 80 clocks www.national.com 68 |
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