IT8712F datasheet(11/189 Pages) ITE

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IT8712F V0.81

Contents

9.5.2.2.35

Thermal Diode Zero Degree

Adjust 3 Register (Index=59h,

Default=56h)

..................................................................................................... 83

9.5.2.2.36

Code ID Register (Index=5Bh, Default=12h) ................................... 83

9.5.2.2.37

Beep Event Enable Register (Index=5Ch, Default=00h).................. 83

9.5.2.2.38

Beep Frequency Divisor of Fan Event Register (Index=5Dh,

Default=00h)

..................................................................................................... 83

9.5.2.2.39

Beep Frequency Divisor of Voltage Event Register (Index=5Eh,

Default=00h)

..................................................................................................... 83

9.5.2.2.40

Beep Frequency Divisor of Temperature Event Register (Index=5Fh,

Default=00h)

..................................................................................................... 83

9.5.2.2.41

FAN_CTL3-1 SmartGuardian Automatic Mode Temperature Limit of

OFF Registers (Index=70h, 68h, 60h, Default=7Fh) ............................................. 83

9.5.2.2.42

FAN_CTL3-1 SmartGuardian Automatic Mode Temperature Limit of

Fan Start Registers (Index=71h, 69h, 61h, Default=7Fh) ...................................... 84

9.5.2.2.43

FAN_CTL3-1 SmartGuardian Automatic Mode Temperature Limit of

Full Speed Registers (Index=72h, 6Ah, 62h, Default=7Fh) ................................... 84

9.5.2.2.44

FAN_CTL3-1 SmartGuardian Automatic Mode Start PWM Registers

(Index=73h, 6Bh, 63h, Default=00h)...................................................................... 84

9.5.2.2.45

FAN_CTL3-1 SmartGuardian Automatic Mode Control Registers

(Index=74h, 6Ch, 64h, Default=00h)...................................................................... 84

9.5.2.2.46

FAN_CTL3-1 SmartGuardian Automatic Mode Temperature Limit of

Full-Speed-OFF Registers (Index=75h, 6Dh, 65h, Default=7Fh) .......................... 85

9.5.2.2.47

Fan Tachometer 4-5 Reading LSB Registers (Index=80h,82h)....... 85

9.5.2.2.48

Fan Tachometer 4-5 Reading MSB Registers (Index=81h,83h)...... 85

9.5.2.2.49

Fan Tachometer 4-5 Limit LSB Registers (Index=84h,86h)............. 85

9.5.2.2.50

Fan Tachometer 4-5 Limit MSB Registers (Index=85h,87h)............ 85

9.5.2.2.51

FAN_CTL4 PWM Control Register (Index=88h, Default=00h) ........ 85

9.5.2.2.52

FAN_CTL5 PWM Control Register (Index=89h, Default=00h) ........ 85

9.5.2.2.53

FAN_CTL5-4 SmartGuardian Automatic Mode Temperature Limit of

OFF Registers (Index=98h, 90h, Default=7Fh) ..................................................... 86

9.5.2.2.54

FAN_CTL5-4 SmartGuardian Automatic Mode Temperature Limit of

Fan Start Registers (Index=99h, 91h, Default=7Fh) .............................................. 86

9.5.2.2.55

FAN_CTL5-4 SmartGuardian Automatic Mode Temperature Limit of

Full Speed Registers (Index=9Ah, 92h, Default=7Fh) ........................................... 86

9.5.2.2.56

FAN_CTL5-4 SmartGuardian Automatic Mode Start PWM Registers

(Index=9Bh, 93h, Default=00h).............................................................................. 86

9.5.2.2.57

FAN_CTL5-4 SmartGuardian Automatic Mode Control Registers

(Index=9Ch, 94h, Default=00h).............................................................................. 86

9.5.2.2.58

FAN_CTL5-4 SmartGuardian Automatic Mode Temperature Limit of

Full-Speed-OFF Registers (Index=9Dh, 95h, Default=7Fh) .................................. 87

9.5.3

Operation.............................................................................................................................. 87

9.5.3.1

Power On RESET and Software RESET................................................................. 87

9.5.3.2

Starting Conversion ................................................................................................. 87

9.5.3.3

Voltage and Temperature Inputs ............................................................................. 88

9.5.3.4

Layout and Grounding ............................................................................................. 89

9.5.3.5

Fan Tachometer ...................................................................................................... 89

9.5.3.6

Interrupt of the EC ................................................................................................... 89

9.5.3.7

FAN Controller FAN_CTL’s ON-OFF and SmartGuardian Modes .......................... 91

9.6

Floppy Disk Controller (FDC) ............................................................................................................ 92

9.6.1

Introduction........................................................................................................................... 92

9.6.2

Reset .................................................................................................................................... 92

9.6.3

Hardware Reset (LRESET# Pin) .......................................................................................... 92

9.6.4

Software Reset (DOR Reset and DSR Reset) ..................................................................... 92

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