f75377 Feature Integration Technology Inc., f75377 Datasheet
f75377
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f75377 Summary of contents
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... F75377 Datasheet H/W Monitor IC with Automatic Fan Speed Control Release Date: March, 2008 Revision: V0.12P F75377 March, 2008 V0.12P ...
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... F75377 Datasheet Revision History Version Date V0.10P 2007/12/18 V0.11P 2007/12/19 V0.12P 2008/3/3 Please note that all data and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this data sheet belong to their respective owners. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury ...
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... NDEX 4F...............................................................................................................22 EGISTER NDEX .....................................................................................................22 EGISTER NDEX ......................................................................................................22 EGISTER NDEX REQUENCY ELECT EGISTER REQUENCY ELECT EGISTER ............................................................................................................23 EGISTER NDEX ...............................................................................................................23 EGISTER NDEX H 3 F75377 .........................................................23 NDEX .........................................................23 NDEX H March. , 2008 V0.12P ...
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... EGISTER HANGE ATE ELECT EGISTER NDEX HANGE ATE ELECT EGISTER I NDEX I NDEX 9F ........................................................................................................................35 NDEX H 4 F75377 ........................................................................... .................................................... ....................................................24 IS 0)..............................................25 IS 1)..............................................25 IS 0)..............................................26 IS 1).............................................. DEV_BANK_EN 0) ......................... DEV_BANK_EN 1).......................... ..............................................28 ...
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... H 7 – ..............................................................................................................47 NDEX H 8 – ...............................................................................................................47 NDEX H 1 – ...............................................................................................................47 NDEX H 2 – ...............................................................................................................48 NDEX H 3 – ...............................................................................................................48 NDEX H 4 – ...............................................................................................................48 NDEX H 5 – ..............................................................................................................49 NDEX H 6 – ...............................................................................................................49 NDEX H 7 – ..............................................................................................................49 NDEX H 5 F75377 March. , 2008 V0.12P ...
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... H 3 – ...............................................................................................................58 NDEX H 4 – ...............................................................................................................59 NDEX H 5 – ..............................................................................................................59 NDEX H 6 – ...............................................................................................................59 NDEX H 7 – ..............................................................................................................59 NDEX H 8 – ...............................................................................................................60 NDEX H 1 – ...............................................................................................................60 NDEX H 2 – ...............................................................................................................60 NDEX H 3 – ...............................................................................................................61 NDEX H 6 F75377 March. , 2008 V0.12P ...
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... ELECTRICAL CHARACTERISTIC........................................................................................................................................63 8 BSOLUTE AXIMUM ATINGS 8 ..........................................................................................................................................................63 HARACTERISTICS 8 ..........................................................................................................................................................65 HARACTERISTICS 9. ORDERING INFORMATION ...................................................................................................................................................65 10. PACKAGE DIMENSIONS......................................................................................................................................................66 4 – ...............................................................................................................61 NDEX H 5 – ..............................................................................................................61 NDEX H 6 – ...............................................................................................................62 NDEX H 7 – ..............................................................................................................62 NDEX H 8 – ...............................................................................................................62 NDEX H ............................................................................................................................................63 7 F75377 March. , 2008 V0.12P ...
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... F75377 also supports beta-compensation algorithm (BJT Model) for new generational 45nm CPU. In fan control machine, the F75377 can provide automatic fan speed control so that the system can operate at the minimum acoustic noise. This chip supports not only PWM duty mode (PWMOUT) for fan speed control. The F75377 supports Heceta-like function ...
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... Green Package(150mil Key Specifications Supply Voltage Operating Supply Current Measured Range Remote Diode Temperature Accuracy Local Temperature Accuracy 3.0V to 3.6V 1mA typ. o -40 ~ 127 ±1 C from + +100 ±3 C from + +100 C 9 F75377 March. , 2008 V0.12P ...
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... Open-drain output pin with 12 mA sink capability Open-drain output pin with 12 mA sink capability, 5V tolerance. 12- TTL level input pin and schmitt trigger, 5V tolerance. ts5V AIN - Input pin(Analog Power. 0.9V, VIL 0.6V.). Output with 8mA drive and 1mA sink capability. 10 F75377 , March. , 2008 V0.12P ...
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... System management interrupt (Pure open drain). This pin will be active low when there is something wrong with voltage, temperature and fan. See register description index 33h VCC Slave serial bus clock VCC Slave serial bus data VCC Master serial bus clock VCC Master serial bus data 11 F75377 March. , 2008 V0.12P ...
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... Access Interface The F75377 can be connected to a compatible 2-wire serial system management bus as a slave device under the control of the master device, using two device terminals SCL and SDA. The F75377 supports I2C protocol of, “Write Byte”, “Read Byte”, both with or without Packet Error checking (PEC) which is calculated using CRC-8 ...
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... Frame 1 Serial Bus Address Byte Figure 3. Serial Bus Read from Internal Address Register 6.2 Temperature Monitoring The F75377 monitors local and 2 remote temperature sensors. Both can be measured from -40°C to 127°C. The temperature format is as the following table: Temperature ( High Byte ) 0°C 1° ...
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... Remote-sensor transistor manufacturers Manufacturer Panasonic Philips 6.3 Beta Compensation The F75377 is configured to detect the temperature of diodes (e.g. 2N3906) or CPU thermal diodes. The diode can be connected in different way as below Figure. Substrate PNP transistor i.e. CPU The basic of the temperature sensor follows mathematical formula as below: ∆ ...
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... PECI/SST Master F75377 Support 6 external device inputs for temperature reading by SST and pass to host by I2C. It’s really a SST to I2C bridge IC for some specific SST temperature sensors’ application. User can ready SST temperature sensor by F75377 bridge function. For instance, user would like to read an external SST temperature sensor by F75377 ...
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... Count Fan speed control The F75377 provides PWM DUTY fan speed control method. The duty cycle of PWM can be programmed by a 8-bit register. The default duty cycle is set to 100%, that is, the default 8-bit registers is set to FFh. The expression of duty can be represented as follows. ...
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... PWM duty and that define in registers. It can be said that the fan will be turned on with a specific speed set by BIOS and automatically controlled with the temperature variation. The F75377 will take charge of all the fan speed control and need no software support. ...
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... PWM duty and stays there. Linear auto mode Otherwise, F75377 supports linear auto mode. Below has a example to describe this mode. More detail, please refer the register description. Set temperature as 70°C, 40°C and Duty as 100%, 70%, 40% ...
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... The following guideline should be taken to reduce the measurement error of the temperature sensors: Place the F75377 as close as practical to the remote sensing diode. In noisy environments, such as a computer main-board, the distance can inches. (typ). This length can be increased if the worst noise sources are avoided ...
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... Description 0 Reserved 0 Enable SST master to output 3 volt data Set 1 to enable IIR for PECI reading. 1 The reading will be more stable. Enable SST slave 0 PECI (Vtt) voltage select. 00: Vtt is 1.3V 0 01: Vtt is 1.2V 10: Vtt is 1.10V 11: Vtt is 1.00V Reserved 0 20 F75377 March. , 2008 V0.12P ...
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... The real value is (1 ± 1/16) PECI reading. 101: The real value is (1 ± 1/32) PECI reading. 110: The real value is (1 ± 1/64) PECI reading. 111: The real value is (1 ± 1/128) PECI reading. 0 Enable I2C response ARA 21 F75377 Description Description Description Description March. , 2008 ...
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... The reading of T1 will not be updated when PECI CRC error 0 External device enable. (Bit mask) Bit 0 for External device0 Bit 1 for External device2 …… Description - Reserved 0 0:SST, 1:I2C (Bit 0 is for device0, Bit 1 is for device1…etc.) 22 F75377 March. , 2008 V0.12P ...
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... Set this bit to reset PECI device, this bit will be cleared after reset 0 Set this bit to reset SST device, this bit will be cleared after reset 0 Reserved 0 Select which SST device to be reset 0 Enable PEC (CRC) of I2C devices 0 Enable repeat start of I2C devices Description 23 F75377 March. , 2008 V0.12P ...
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... A one enables the corresponding interrupt status bit for PME# interrupt one enables the corresponding interrupt status bit for PME# interrupt 0 A one enables the corresponding interrupt status bit for PME# interrupt. 0 Description 0 Reserved 0 A one enables the corresponding interrupt status bit for PME# interrupt 24 F75377 March. , 2008 V0.12P ...
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... Write 1 to clear this bit, write 0 will be ignored. A one indicates TEMP7 temperature sensor has exceeded high limit or below the “high limit –hysteresis” limit. Write 1 to clear this bit, write 0 will 0 be ignored. 25 F75377 March. , 2008 V0.12P ...
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... Set when the TEMP8 exceeds the high limit. Clear when the TEMP8 is 0 below the “high limit –hysteresis” temperature. Set when the TEMP7 exceeds the high limit. Clear when the TEMP7 is 0 below the “high limit –hysteresis” temperature. 26 F75377 March. , 2008 V0.12P ...
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... The offset ranges from -64ºC to +63ºC. 7’b011_1111: mean temperature + 63; 7’b000_0001: mean temperature + 1; 7’b000_0000: mean temperature + 0; 7’b111_1111: mean temperature - 1; 7’b100_0000: mean temperature - 64; 27 F75377 March. , 2008 V0.12P ...
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... Temperature and below the ( boundary – hysteresis ). Description 0 Reserved Limit hysteresis. (0~15 degree C) 0 Temperature and below the ( boundary – hysteresis ). Description 0h Limit hysteresis. (0~15 degree C) Temperature and below the ( boundary – hysteresis ). 0h Limit hysteresis. (0~15 degree C) Temperature and below the ( boundary – hysteresis ). 28 F75377 March. , 2008 V0.12P ...
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... Internal diode 0 is open or short Description Reserved 0 The diode open or short 0 The diode open or short 0 0 The diode open or short 0 The diode open or short 0 The diode open or short 0 The diode open or short 29 F75377 March. , 2008 V0.12P ...
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... T3 high limit. The unit (If DEV_BANK_EN is 1) Temperature sensor 1 high limit. The unit is 1 º T4 high limit. The unit (If DEV_BANK_EN F75377 º C.At the moment of º C.At the moment of reading this º C.At the moment of reading this º C.At the moment of reading º ...
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... The queue time for second filter to quickly update values. 00: 8 times. 01: 16 times. (default). 1h 10: 24 times. 11: 32 times. Reserved 0 A one enables the corresponding interrupt status bit for PME# interrupt F75377 º C. (When DEV_BANK_EN is 0) Description Description March. , 2008 V0.12P ...
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... This bit set to high mean that fan1 count can’t meet expect count over than -- SMI time(CR9F) or when duty not zero but fan stop over then 3 sec. Description 0 Reserved 00: Output PWM mode (push pull) to control fans. 01 Reserved 10: Output PWM mode (open drain) to control Intel 4-wire fans. 11: Reserved. 32 F75377 Reserved March. , 2008 V0.12P ...
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... Boundary hysteresis. (0~15 degree C) Segment will change when the temperature over the boundary 4h temperature and below the ( boundary – hysteresis ). 0000: Boundary hysteresis. (0~15 degree C) Segment will change when the temperature over the boundary 4h temperature and below the (boundary – hysteresis ). 33 F75377 March. , 2008 V0.12P ...
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... Fan2 duty increasing update rate 00: 2.5Hz 01: 5Hz (default) 1h 10: 10Hz 11: 20Hz Fan1 duty increasing update rate 00: 2.5Hz 01: 5Hz (default) 1h 10: 10Hz 11: 20Hz Description 0h Reserved Fan3 duty decreasing update rate 00: 2.5Hz 01: 5Hz (default) 1h 10: 10Hz 11: 20Hz 34 F75377 March. , 2008 V0.12P ...
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... Reserved 0 When fan start, the FAN_CTRL 3 will increase duty-cycle from 0 to this (value x 8 directly. And if fan speed is down, the FAN_CTRL 3 will 5h decrease duty-cycle to 0 when the PWM duty cycle is less than this (value x 4). Description -- Reservd 35 F75377 March. , 2008 V0.12P ...
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... FAN1 full speed count reading (MSB). At the moment of reading this register, the LSB will be latched. This will prevent from data updating when reading. To read the fan count correctly, read MSB first and followed read the LSB. FAN1 full speed count reading (LSB). 36 F75377 0) this March. , 2008 V0.12P ...
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... FAN3 count reading (MSB). At the moment of reading this register, the LSB will be latched. This will prevent from data updating when reading. To read the fan count correctly, read MSB first and followed read the LSB. FAN3 count reading (LSB). 37 F75377 0) this March. , 2008 V0.12P ...
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... Set 1 will enable the interpolation of the fan expect table. Reserved 0 Description 0 Set 1 that fan speed will keep current temp. status before system re-boot up. 0 Set 1 that FAN2 will not stop but keep at FAN1_MIN_DUTY Reserved 0 Set 1 will enable the interpolation of the fan expect table. 38 F75377 0) this March. , 2008 V0.12P ...
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... Description Reserved table and weighting setting 1: T1 table and weighting setting 2: T2 table and weighting setting 0 …… ….. 7: T7 table and weighting setting 8: T8 table and weighting setting 39 F75377 March. , 2008 V0.12P ...
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... T0 independent with FAN2. 1: Proportion FAN2 is 1/ Proportion FAN2 is 2/15. ….. F: Proportion FAN2 is 15/15 Temperature 0 to FAN1 weight setting register independent with FAN1. 1: Proportion FAN1 is 1/ Proportion FAN1 is 2/15. ….. F: Proportion FAN1 is 15/15 Description 0 Reserved 40 F75377 March. , 2008 V0.12P ...
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... User must set this register to 0. 60% full speed: (100-60)*32/60, so user must program 21 to this reg. X% full speed: The value programming in this byte is 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 41 F75377 Description Description Description Full speeed (100-X)*32/X March ...
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... BOUND1TEMP CRD9.. Set 1 that FAN speed will jump to SEC2SPEED when temperature under BOUND1TEMP Hystersis. 1 Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B) when temperature under FAN1 Boundary Hystersis. 42 F75377 Description Description Description Description March. , 2008 V0.12P ...
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... BOUNDARY temperature for T1 in temperature mode. When temperature is exceed this boundary, FAN expect value will load 46h from segment 1 register (index DC)h. When temperature is below this boundary – hysteresis, FAN expect value will load from segment 2 register (index DDh). 43 F75377 Description Description March. , 2008 V0.12P ...
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... The value that set in this byte is the relative expect fan speed % of d9h the full speed in this temperature section. 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 44 F75377 Description Description Full speeed (100-X)*32/X Description Description March ...
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... T2 independent with FAN2. 1: Proportion FAN2 is 1/ Proportion FAN2 is 2/15. ….. F: Proportion FAN2 is 15/15 Temperature 2 to FAN1 weight setting register independent with FAN1. 1: Proportion FAN1 is 1/ Proportion FAN1 is 2/15. ….. F: Proportion FAN1 is 15/15 45 F75377 Description Description March. , 2008 V0.12P ...
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... BOUNDARY temperature for T2 in temperature mode. When temperature is exceed this boundary, FAN1 expect value will load 28h from segment 2 register (index DDh). When temperature is below this boundary – hysteresis, FAN expect value will load from segment 3 register (index DEh). 46 F75377 Description Description Description Description March. , 2008 ...
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... Reserved 0 Set 1 that FAN speed will jump to SEC1SPEED when temperature over BOUND1TEMP CRD9. 0 Set 0 that FAN1 speed will raise up to SEC1SPEED by slop value (CR9A) when temperature over BOUND1TEMP CRD9.. 47 F75377 Full speeed (100-X)*32/X Description Description Description March. , 2008 ...
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... T3 independent with FAN1. 1: Proportion FAN1 is 1/ Proportion FAN1 is 2/15. ….. F: Proportion FAN1 is 15/15 Description 0 Reserved Temperature 3 to FAN3 weight setting register independent with FAN3. 1: Proportion FAN3 is 1/ Proportion FAN3 is 2/15. ….. F: Proportion FAN3 is 15/15 Description 48 F75377 March. , 2008 V0.12P ...
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... The value that set in this byte is the relative expect fan speed % of d9h the full speed in this temperature section. 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 49 F75377 Description Description Full speeed (100-X)*32/X Description March ...
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... Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B) when temperature under FAN1 Boundary Hystersis. Temperature 4 to FAN2 weight setting register independent with FAN2. 1: Proportion FAN2 is 1/ Proportion FAN2 is 2/15. ….. F: Proportion FAN2 is 15/15 50 F75377 Description Description Description March. , 2008 V0.12P ...
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... BOUNDARY temperature for T4 in temperature mode. When temperature is exceed this boundary, FAN1 expect value will load 28h from segment 2 register (index DDh). When temperature is below this boundary – hysteresis, FAN expect value will load from segment 3 register (index DEh). 51 F75377 Description Description Description March. , 2008 V0.12P ...
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... The value that set in this byte is the relative expect fan speed % of 4ch the full speed in this temperature section. 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 52 F75377 Description Full speeed (100-X)*32/X Description Description Description March ...
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... T5 independent with FAN1. 1: Proportion FAN1 is 1/ Proportion FAN1 is 2/15. ….. F: Proportion FAN1 is 15/15 Description Reserved 0 Temperature 5 to FAN3 weight setting register independent with FAN3. 1: Proportion FAN3 is 1/ Proportion FAN3 is 2/15. ….. F: Proportion FAN3 is 15/15 53 F75377 March. , 2008 V0.12P ...
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... User must set this register to 0. 60% full speed: (100-60)*32/60, so user must program 21 to this reg. X% full speed: The value programming in this byte is 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 54 F75377 Description Description Description Full speeed ...
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... Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B) when temperature under FAN1 Boundary Hystersis. Temperature 6 to FAN2 weight setting register independent with FAN2. 1: Proportion FAN2 is 1/ Proportion FAN2 is 2/15. ….. F: Proportion FAN2 is 15/15 55 F75377 Description Description Description March. , 2008 V0.12P ...
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... BOUNDARY temperature for T6 in temperature mode. When temperature is exceed this boundary, FAN1 expect value will load 28h from segment 2 register (index DDh). When temperature is below this boundary – hysteresis, FAN expect value will load from segment 3 register (index DEh). 56 F75377 Description Description Description March. , 2008 V0.12P ...
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... The value that set in this byte is the relative expect fan speed % of 4ch the full speed in this temperature section. 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 57 F75377 Description Full speeed (100-X)*32/X Description Description Description March ...
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... T7 independent with FAN1. 1: Proportion FAN1 is 1/ Proportion FAN1 is 2/15. ….. F: Proportion FAN1 is 15/15 Description Reserved 0 Temperature 7 to FAN3 weight setting register independent with FAN3. 1: Proportion FAN3 is 1/ Proportion FAN3 is 2/15. ….. F: Proportion FAN3 is 15/15 58 F75377 March. , 2008 V0.12P ...
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... User must set this register to 0. 60% full speed: (100-60)*32/60, so user must program 21 to this reg. X% full speed: The value programming in this byte is 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 59 F75377 Description Description Description Full speeed ...
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... Set 0 that FAN speed will decrease to SEC2SPEED by slop value (CR9B) when temperature under FAN1 Boundary Hystersis. Temperature 8 to FAN2 weight setting register independent with FAN2. 1: Proportion FAN2 is 1/ Proportion FAN2 is 2/15. ….. F: Proportion FAN2 is 15/15 60 F75377 Description Description Description March. , 2008 V0.12P ...
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... BOUNDARY temperature for T8 in temperature mode. When temperature is exceed this boundary, FAN1 expect value will load 28h from segment 2 register (index DDh). When temperature is below this boundary – hysteresis, FAN expect value will load from segment 3 register (index DEh). 61 F75377 Description Description Description March. , 2008 V0.12P ...
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... The value that set in this byte is the relative expect fan speed % of 4ch the full speed in this temperature section. 2’b01: The value that set in this byte is mean the expect PWM duty-cycle in this temperature section. 62 F75377 Description Full speeed (100-X)*32/X Description Description March ...
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... C < T < 100 C, VCC = 3. -40 C <T < 100 C <T < 127 < T < 100 C, VCC = 3.0V to 3.6V A High Level Low Level 63 F75377 UNIT V V ° C ° C MIN TYP MAX Unit o ± ± 1 ± ± 1 ± 3.0 3.3 3 ...
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... ILIL Vt- 0.5 0.8 1.1 Vt+ 1.6 2.0 2.4 ILIH ILIL V 0.4 lvt- V 1.0 lvt+ ILIH lv V 0.4 lvt- V 1.0 lvt+ ILIH lv ILIL lv 64 F75377 UNIT CONDITIONS V VCC = 3 VCC = 3 VOL = 0.4V µA +1 VIN = VCC µA -1 VIN = 0V V VCC = 3 VCC = 3 VOL = 0 VOH = 2.4V µA +1 VIN = VCC µA -1 VIN = 0V V VCC = 3.3V V VCC = 3 ...
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... F75377R t SCL SU;DAT VALID DATA t HD;DAT Serial Bus Timing Diagram SYMBOL MIN SCL t 300 HD;SDA t 300 SU;STO t 50 SU;DAT t 5 HD;DAT Production Flow Commercial, 0°C to +70°C 65 F75377 SU;STO MAX. UNIT - 300 nS March. , 2008 V0.12P ...
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... Please note that all datasheet and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this datasheet belong to their respective owner Taipei Office Bldg K4, 7F, No. 700, Chung Cheng Rd., Chungho City, Taipei 235, Taiwan, R.O.C. TEL : 886-2-8227-8027 FAX : 886-2-8227-8037 66 F75377 March. , 2008 V0.12P ...