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F75133 Datasheet(PDF) 16 Page - Feature Integration Technology Inc. |
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F75133 Datasheet(HTML) 16 Page - Feature Integration Technology Inc. |
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16 / 24 page ![]() 2007 V0.28P -13- F75133 7-0 LIMIT2_VAL[11:4] R/W 3Ch Duty cycle count LIMIT2, if average duty count over this value and TURBO_SEL is 1, then it will assert TURBO# pin. 8.6 LIMIT1 Value Register (MSB) Index 05h Bit Name R/W Default Description 7-0 LIMIT1_VAL[11:4] R/W 0Fh Duty cycle count LIMIT1, if average duty count under this value and TURBO_SEL is 0, then it will assert TURBO# pin. 8.7 Event Status Register Index 06h Bit Name R/W Default Description 7-4 DUTY_SEL R/W 4’h4 When CR00H bit4 set to 0, the pin TURBO# will output 100Hz clock, and users can use these registers to program the output duty cycle, (default is 50%) For example: 0: 10% duty cycle. 1: 20% duty cycle. 2: 30% duty cycle. ……………….. 8: 90% duty cycle. 9: 100% duty cycle. (always high) 10~15: reserved. 3 PME_STS R/W 0 When Duty cycle value (PWM_DUTY) over (under) or return to normal value, it will trigger PME# and set this bit to 1. Users need write 1 to clear it, else PME# will not be asserted again. 2 OVER_UNDER_FAU LT R 0 1. PWM duty cycle value (PWM_DUTY) over LIMIT3 count (CR03, CR0A) and DIS_LIMIT3 set to 0(CR0D), this bit will set to 1, else will auto return to 0. 2. PWM duty cycle value (PWM_DUTY) under LIMIT0 count (CR09, CR0A) and DIS_LIMIT0 set to 0(CR0D), this bit will set to 1, else will auto return to 0 1 OVER_HIGH R 0 PWM duty cycle value (PWM_DUTY) over LIMIT2 count (CR04, CR0B), this bit will set to 1, else will auto return to 0. 0 UNDER_LOW R 0 PWM duty cycle value (PWM_DUTY) under LIMIT1 count (CR05, CR0B), this bit will set to 1, else will auto return to 0. 8.8 I2C_ADDRESS Register Index 07h Bit Name R/W Default Description 7-0 I2C_ADDR R/W X Pull-down 4.7K: default I2C ID is 66h. In this strapping value the PWM input will be inverted. Pull-up 100K: default I2C ID is 68h. Pull-down 100k: default I2C ID is 6Ah. In this strapping value the PWM input will be inverted. Pull-up 4.7k: default I2C ID is 6Ch. |
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