Contents
9.5.2.2.44 FAN_CTL3-1 SmartGuardian Automatic Mode Control Registers 100
(Index=74h, 6Ch, 64h, Default=00h) ...................................................................100
9.5.2.2.45 FAN_CTL3-1 SmartGuardian Automatic Mode △-Temperature Registers
101
(Index=75h, 6Dh, 65h, Default=00h) ...................................................................101
9.5.2.2.46 FAN_CTL3-1 Target Zone Registers (Index=76h, 6Eh, 66h, Default=0Fh)
101
9.5.2.2.47 Fan Tachometer 4-5 Reading LSB Registers (Index=80h,82h).....101
9.5.2.2.48 Fan Tachometer 4-5 Reading MSB Registers (Index=81h,83h)....101
9.5.2.2.49 Fan Tachometer 4-5 Limit LSB Registers (Index=84h,86h) ..........101
9.5.2.2.50 Fan Tachometer 4-5 Limit MSB Registers (Index=85h,87h) .........101
9.5.2.2.51 External Temperature Sensor Host Status Register (Index=88h, Default=
-00h)
102
9.5.2.2.52 External Temperature Sensor Host Target Address Register (Index=89h,
Default=00h) 102
9.5.2.2.53 External Temperature Sensor Host Write Length Register (Index=8Ah,
Default=00h) 102
9.5.2.2.54 External Temperature Sensor Host Read Length Register (Index=8Bh,
Default=00h) 103
9.5.2.2.55 External Temperature Sensor Host Command (Write Data 1) Register
103
(Index=8Ch, Default=00h)....................................................................................103
9.5.2.2.56 External Temperature Sensor Write Data (2-8) Register (Index=8Dh,
Default=--h) 103
9.5.2.2.57 External Temperature Sensor Host Control Register (Index=8Eh,
Default=02h) 103
9.5.2.2.58 External Temperature Sensor Read Data (1-16) Register (Index=8Fh,
Default=--h) 104
9.5.2.2.59 Special FAN Control Mode Extra Vector A, B Temperature Limit of Fan
Start Registers (Index=90h, 94h, Default=FFh)...................................................104
9.5.2.2.60 Special FAN Control Mode Extra Vector A, B Slope Registers
(Index=91h, 95h, Default=00h) ............................................................................104
9.5.2.2.61 Special FAN Control Mode Extra Vector A, B △-Temperature Registers
(Index=92h, 96h, Default=00h) ............................................................................105
9.5.2.2.62 PCH/AMDTSI Host Status Register (Index=98h, Default=---00000b)105
9.5.2.2.63 PCH/AMDTSI Host Target Address Register (Index=99h, Default=00h)
106
9.5.2.2.64 PCH/AMDTSI Host Command Register (Index=9Ch, Default=00h)106
9.5.2.2.65 PCH/AMDTSI Write Data Register (Index=9Dh, Default=--h)........106
9.5.2.2.66 PCH/AMDTSI Host Control Register (Index=9Eh, Default=02h) ...106
9.5.2.2.67 PCH/AMDTSI Read Data (1-16) Register (Index=9Fh, Default=--h)107
9.5.3 Operation ............................................................................................................................107
9.5.3.1 Power on Reset and Software Reset.....................................................................107
9.5.3.2 Starting Conversion ...............................................................................................107
9.5.3.3 Voltage and Temperature Inputs ...........................................................................108
9.5.3.4 Layout and Grounding ...........................................................................................109
9.5.3.5 Fan Tachometer.....................................................................................................109
9.5.3.6 Interrupt of the EC..................................................................................................110
9.5.3.7 FAN Controller FAN_CTL’s ON-OFF and SmartGuardian Modes ........................111
9.5.3.8 External Thermal Sensor Programming Procedure...............................................113
9.6 Floppy Disk Controller (FDC) ..........................................................................................................119
9.6.1 Overview .............................................................................................................................119
9.6.2 Reset...................................................................................................................................119
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