f75373 Feature Integration Technology Inc., f75373 Datasheet
f75373
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f75373 Summary of contents
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... Fintek F75373S/F75373SG Fintek Hardware Monitor IC Datasheet Release Date: July 2007 Revision: Version 0.25P Feature Integration Technology Inc. F75373 ...
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... Fintek for any damages resulting from such improper use or sales. Feature Integration Technology Inc. Revision History Original version Update fan speed control mechanism description Add DC spec. in the datasheet Revise application circuit Add part no. F75373SG(Green package) and delete version ID Company readdress F75373 ...
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... I 00 ............................................................................................................................. 13 NDEX H ............................................................................................................................. 14 NDEX H ............................................................................................................................. 14 NDEX H ............................................................................................................................. 15 NDEX H ..................................................................................................................... 15 NDEX ........................................................................................................................................... .................................................................................................................... 17 NDEX H 1 ....................................................................................................................... 18 NDEX H 1 ....................................................................................................................... 18 NDEX H 2 ................................................................................................................ 19 NDEX H 2 ................................................................................................................... 19 NDEX H Feature Integration Technology Inc. F75373 ...
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... NDEX H 76 ...................................................................................................................................... .................................................................................................................... 27 NDEX H 1 ..................................................................................................................... 28 NDEX H .................................................................................................... 28 EGISTER NDEX H .................................................................................................... 28 EGISTER NDEX .................................................................................................................... 28 NDEX .................................................................................................................... 29 NDEX H ................................................................................................................................................ 29 – ............................................................................................................. 29 EGISTER NDEX H – ................................................................................................................... 30 NDEX H – .................................................................................................................. 30 NDEX H A0 ........................................................................................................ 30 NDEX H F75373 35 ........................................................................... 20 H ...
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... NDEX H AC ............................................................................................ 34 NDEX H AD ............................................................................................. 34 NDEX H B0 ........................................................................................................ 34 NDEX H B1 ........................................................................................................ 35 NDEX H B2 ........................................................................................................ 35 NDEX H B3 ........................................................................................................ 36 NDEX H B4 ............................................................................................. 36 NDEX H B5 .............................................................................................. 36 NDEX H B6 ............................................................................................. 36 NDEX H B7 .............................................................................................. 37 NDEX H B8 ............................................................................................. 37 NDEX H B9 ................................................................................................ 37 NDEX H BA .............................................................................................. 38 NDEX H BB ............................................................................................... 38 NDEX H BC .............................................................................................. 38 NDEX H BD ............................................................................................... 38 NDEX .......................................................................................... INTEK SE NLY ............................................................................................................................................. 39 F75373 ...
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... The remote temperature sensor is suggested to be performed by thermistor. The F75373S can provide automatic fan speed control so that the system can operate at the minimum acoustic noise. Also the users can set up the upper and lower limits (alarm thresholds) of all monitored parameters and this chip can also issue warning messages for system protection when there is something wrong with monitored items ...
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... TTL level input pin and schmitt trigger with internal pull down 100K ohm IN tsd100k AIN - Input pin(Analog Power Power Pin Pin No. Pin Name 16 VCC 9 GND FANIN1 1 FANIN2/GPIO0 2 3 PWMOUT2/GPIO1 SCLK 7 SDATA 8 Type Description P 3.3V power supply voltage input P GND 2 Feature Integration Technology Inc. 16 VCC 15 VT1 14 VT2 13 VREF 12 VIN1 11 VIN2 10 VIN3 9 GND F75373 V0.25P ...
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... Active-Low output. This pin will be a logic LOW when the temperature exceeds its limit. Active-Low output. This pin will be a logic LOW when the voltage exceeds its limit. Reference Voltage. 2.304v Description Serial Bus data. 12 Serial Bus clock. 3 F75373 Default Open drain Default Open drain V0.25P ...
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... The voltage higher than 2V should be reduced by a factor with external resistors obtain the input range. Only 3VCC is an exception for it is main power of the F75373S. Therefore 3VCC can directly connect to this chip and need no external resistors. There are two functions in this pin with 3.3V. The first function is to supply internal analog power of the F75373S and the second function is that this voltage with 3 ...
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... Connection 5.2 Access Interface The F75373S provides one serial access interface, Serial Bus, to read/write internal registers. The address of Serial Bus is configurable by using power-on trapping. The pin 3 (PWMOUT1/ADDR_TRAP) is multi-function pin. During power-on, this pin serves as input detection of logic high or logic low. This pin is default pull-down resistor with 100K ohms mapping the Serial Bus address 0x5A (0101_1010) ...
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... Monitor Temperature from thermistor The F75373S can connect two thermistors to measure environment temperature or remote temperature. The specification of thermistor should be considered to (1) β value is 3435K (2) resistor value is 10K ohm at 25°C. In the Figure 4-3, the themistor is Feature Integration Technology Inc. ...
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... Ohm, then connect to VREF (pin13). 5.3.2 Over Temperature Signal (OVT#) The F75373S can provide two external thermal sensors to detect temperature. When monitored temperature exceeds the over-temperature threshold value, OVT# will be asserted until the temperature goes below the hysteresis temperature. ...
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... Fan speed control The F75373S provides 2 fan PWM speed control. The duty cycle of PWM can be programmed by a 8-bit register which are defined in the CR76h and CR86h. 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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... Fan speed mode is an intelligent method according to expected fan speed pre-setting by BIOS. will operate at full speed and the F75373S will get the full speed count value. Then fan speed slows down to rotate at about 72.5% (8/11) of full speed. After that, the fan speed will automatically rotate according to the expected fan speed setting by BIOS ...
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... When PWMOUT duty-cycle increase from 00h to RAISE_DUTY(≠ 00h), F75373S also will keep duty-cycle 1 at RAISE-DUTY 3 seconds . After that, F75373S starts to compare current fan count and expected count in order to increase or decrease its duty-cycle. This ensures that if there is any glitch during the 3 seconds F75373S will ignore it. ...
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... SMI# interrupt for temperature is shown as figure 5-13. Temperature exceeding high limit or going below hystersis will cause an interrupt if the previous interrupt has been reset by writing “1” all the interrupt Status Register. Feature Integration Technology Inc. 3 min(default) 100% Figure 5-12 3 min(default) Figure 5-13 11 F75373 V0.25P ...
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... Reset when Interrupt Status Registers are written 1 Figure 5-13 . SMI# will be asserted when the fan speed count exceeds or goes below the fan Fan Count limit * * * * * *Interrupt Reset when Interrupt Status Registers are written 1 12 F75373 * * Fan Count limit SMI# (pulse mode) * (level mode) * FAN SMI# Mode Figure 5- ...
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... Serial Bus Address register. This bit clears itself since the power on default is zero. R/W Set this bit to 1 will power down A/D converter circuit. Default Read back will be 0 R/W A one enables startup of monitoring operations; a zero puts the part in standby mode. 13 F75373 Description V0.25P ...
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... When set this bit to 1 fan fault LED output frequency will be 0.5HZ, else is 1Hz(default) R/W When set this bit to 0 the fan fault will be level mod, else if set to 1 the fan fault will indicate by LED function(1Hz or 0.5Hz) the LED frequency can set by REG02H bit2 14 F75373 Description Description V0.25P ...
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... Voltage fault level. When set this bit to 0 voltage fault is low active (default). if set to 1 fan fault is high active R/W Voltage fault queue used to filter the voltage noise, the follow define the times of the event when VOLT_FAULT is asserted. 00: 1 times 01: 3 times 10: 5 times 11: 7 times Attribute 15 F75373 Description Description V0.25P ...
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... V2 Low Limit. The unit is 7.8125mV. R/W V3 High Limit. The unit is 7.8125mV. R/W V3 Low Limit. The unit is 7.8125mV. R/W Temperature sensor 1 High Limit. The unit is 1 R/W Temperature sensor 1 Hysteresis Limit. The unit is 1 R/W Temperature sensor 2 High Limit. The unit F75373 Description º C. º C. º C. º C. º C. ...
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... A one enables the corresponding interrupt status bit for SMI# interrupt. R/W A one enables the corresponding interrupt status bit for SMI# interrupt. R/W A one enables the corresponding interrupt status bit for SMI# interrupt. R/W A one enables the corresponding interrupt status bit for SMI# 17 F75373 º C. Description V0.25P ...
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... R/W A one indicates fan1 count limit has been exceeded. A zero indicates fan1 count is in the safe region. R/W A one indicates a high limit of VT2 has been exceeded. A zero indicates VT2 is below the hysteresis limit. 18 F75373 Description Description V0.25P ...
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... TIME. Write 1 to clear this bit, write 0 will be ignored. R/W A one indicates fan1 reading count is over then fan1 expect count, and the PWMOUT1 duty cycle is full more then the FAN FAULT TIME. Write 1 to clear this bit, write 0 will be ignored. 19 F75373 Description Description V0.25P ...
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... VT1 hysteresis Limit RO A one indicates a high or low limit of V3 exceeding one indicates a high or low limit of V2 exceeding one indicates a high or low limit of V1 exceeding one indicates a high or low limit of VCC exceeding. 20 F75373 Description Description V0.25P ...
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... Power on default: 00h Bit Name 7-6 FAN2_MODE Feature Integration Technology Inc. Attribute RO Chip ID, High byte (8’h02). Attribute RO Chip ID, Low byte (8’h04). Attribute RO Vendor ID, 8’h19 Attribute RO Vendor ID, 8h34 Attribute R/W 00: FAN2 operates in SPEED mode. PWMOUT2 duty-cycle is 21 F75373 Description Description Description Description Description V0.25P ...
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... GP_CLK and GP_DATA, the reset timer starts to count down according to the value set in INDEX 62H. When it counts down to zero, INDEX[72H, 73H] will be loaded into INDEX[74H,75H]. Attribute R/W This register determines the time of fan fault. Two conditions cause fan fault event: 22 F75373 Description V0.25P ...
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... VT1 temperature offset register. The offset value is representative in 2’s complement. The real temperature value will be added by this offset and then will be put into temperature reading ( Value RAM 14h). The offset ranges from -128ºC to +127ºC. 7Fh : +127ºC. 23 F75373 Description Description Description V0.25P ...
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... Value RAM 15h). The offset ranges from -128ºC to +127ºC. 7Fh : +127ºC. 01h : +5ºC. 00h : +0ºC. FFh : -1ºC. FEh : -2ºC. 80h : -128ºC. Attribute R/W PWMOUT1 will increasing duty-cycle from 0 to this value rapidly. 24 F75373 Description Description V0.25P ...
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... When power on, the PWMOUT1 will output full duty cycle (FFh) to enable system FAN. After 10 seconds when detecting FANIN1 signal, assuming the fan has been fully turned on, the fan speed count detected will be recorded in the register. If there is no signal on 25 F75373 Description Description Description Description ...
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... This register is only valid at HALF-AUTOMATIC(SPEED) mode. Attribute R/W The fan1 timeout count, when software idle timeout is happen, this count will be load to FAN1 expect register. The default count is 11/8 of FAN1_FULL reg. ( 73% of full speed). This register is only valid at HALF-AUTOMATIC(SPEED) mode. 26 F75373 Description Description Description V0.25P ...
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... FAN. After 10 seconds when detecting FANIN1 signal, assuming the fan has been fully turned on, the fan speed count detected will be recorded in the register. If there is no signal on FANIN2 after power on, the PWMOUT2 will keep outputting FFh duty cycle. 27 F75373 Description Description Description Description V0.25P ...
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... The fan2 timeout count, when software idle timeout is happen, this count will be load to FAN2 expect register. The default count is 11/8 of FAN2_FULL reg. ( 73% of full speed). This register is only valid at HALF-AUTOMATIC(SPEED) mode. Attribute 28 Feature Integration Technology Inc. Description Description Description Description F75373 V0.25P ...
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... Set to 1 for output function. Set to 0 for input function(default). R/W GPIO1 output control. Set to 1 for output function. Set to 0 for input function(default). R/W GPIO0 output control. Set to 1 for output function. Set to 0 for input function(default). 29 Feature Integration Technology Inc. Description Description Description F75373 V0.25P ...
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... When VT1 temperature is exceed this boundary, FAN1 segment 1 speed count registers(INDEX A4h, A5h) will be loaded into FAN1 expect count registers(INDEX 74h,75h). When VT1 temperature is below this boundary, FAN1 segment 2 speed count registers(INDEX A6h, A7h) will be loaded into FAN1 30 Feature Integration Technology Inc. Description Description Description F75373 V0.25P ...
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... AAh, ABh) will be loaded into FAN1 expect count registers(INDEX 74h,75h). Attribute th R/W The 4 BOUNDARY temperature for VT1 in temperature mode. When VT1 temperature is exceed this boundary, FAN1 segment 4 speed count registers(INDEX AAh, ABh) will be loaded into FAN1 31 Feature Integration Technology Inc. Description Description Description F75373 V0.25P ...
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... FAN1 in temperature mode. After detecting FAN1 full speed count, the high byte of 112.5% FAN1 FULL SPEED COUND will be loaded into this register. (ie. 88% of FULL SPEED RPM) Attribute 32 Feature Integration Technology Inc. Description Description Description Description F75373 V0.25P ...
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... The MSB of 4 expected fan speed for FAN1 in temperature mode. After detecting FAN1 full speed count, the high byte of 156.25% FAN1 FULL SPEED COUND will be loaded into this register. (ie. 64% of FULL SPEED RPM) 33 Feature Integration Technology Inc. Description Description Description F75373 V0.25P ...
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... After detecting FAN1 full speed count, FFh will be loaded into this register. Attribute th R/W The LSB of 5 expected fan speed for FAN1 in temperature mode. After detecting FAN1 full speed count, FFh will be loaded into this register. Attribute 34 Feature Integration Technology Inc. Description Description Description Description F75373 V0.25P ...
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... B8h, B9h) will be loaded into FAN2 expect count registers(INDEX 84h,85h). When VT2 temperature is below this boundary, FAN2 segment 4 speed count registers(INDEX BAh, BBh) will be loaded into FAN2 expect count registers(INDEX 84h,85h). 35 Feature Integration Technology Inc. Description Description F75373 V0.25P ...
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... The LSB of 1 expected fan speed for FAN2 in temperature mode. After detecting FAN2 full speed, 00h will be loaded into this register. Attribute nd R/W The MSB of 2 expected fan speed for FAN2 in temperature mode. 36 Feature Integration Technology Inc. Description Description Description Description F75373 V0.25P ...
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... The LSB of 3 expected fan speed for FAN2 in temperature mode. After detecting FAN2 full speed count, the low byte of 131.25% FAN2 FULL SPEED COUND will be loaded into this register. (ie. 76% of FULL SPEED RPM) 37 Feature Integration Technology Inc. Description Description Description F75373 V0.25P ...
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... FULL SPEED COUND will be loaded into this register. (ie. 64% of FULL SPEED RPM) Attribute th R/W The MSB of 5 expected fan speed for FAN2 in temperature mode. After detecting FAN2 full speed count, FFh will be loaded into this register. Attribute 38 Feature Integration Technology Inc. Description Description Description Description F75373 V0.25P ...
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... Feature Integration Technology Inc. th R/W The LSB of 5 expected fan speed for FAN2 in temperature mode. After detecting FAN2 full speed count, FFh will be loaded into this register. RATING -0.5 to 4.0 -0 +70 -55 to +150 39 F75373 UNIT V V ° C ° C V0.25P ...
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... VOL 0.4 VOH 2.4 ILIH +10 ILIL -10 Vt- 0.5 0.8 1.1 Vt+ 1.6 2.0 2.4 VTH 0.5 1.2 VOL 0.4 VOH 2.4 ILIH +10 ILIL -10 40 F75373 UNIT CONDITIONS IOL = IOH = - 12 mA µA VIN = VDD µA VIN = 0V V VDD = 3 VDD = 3 VDD = 3 IOL = IOH = - 12 mA µA VIN = VDD µA VIN = 0V V0.25P ...
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... HD;DAT VALID DATA t SU;DAT Serial Bus Timing Diagram 41 Feature Integration Technology Inc. CONDITIONS IOL = 12 mA IOH = -12 mA IOL = 8 mA IOL = 12 mA IOL = 16 mA VIN = VDD VIN = VDD = 3.3V V VDD = 3.3V V VDD = 3.3 V µA VIN = VDD µA VIN = SU;STO F75373 V0.25P ...
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... Feature Integration Technology Inc. SYMBOL MIN SCL t 4.7 HD;SDA t 4.7 SU;STO t 120 SU;DAT t 5 HD;DAT Package Type 16 PIN SOP 16 PIN SOP (Green Package) 42 F75373 MAX. UNIT 1.0 uS 300 nS Production Flow Commercial, 0°C to +70°C Commercial, 0°C to +70°C V0.25P ...
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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 owne Feature Integration Technology Inc. Taipei Office Bldg. K4, 7F, No.700, Chung Cheng Rd., Chungho City, Taipei, Taiwan 235, R.O.C. TEL : 866-2-8227-8027 FAX : 866-2-8227-8037 43 F75373 r V0.25P ...
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... GND VIN1,VIN2,VIN3 SIGNALS BEST INPUT LEVEL IS ABOUT 1V F75373S VREF D1 1N4148 R18 VREF 4.7K R19 FANIN1 27K R21 10K Title Feature Integration Technology Inc. Size Document Number A F75373S Date: Monday , April 14, 2003 1 VOLTAGE MONITOR R2 100K VIN1 (2.0V) VDD1 R3 100K R4 150K VIN2 (2.5V) VDD2 R5 100K R12 ...