PC8374L datasheet(10/239 Pages) NSC

10 / 239 page

Table of Contents (Continued)

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Revision 1.1

7.2.7

Hard-Disk LED Indicator Control ............................................................................... 125

7.2.8

SMBus Voltage Translation ....................................................................................... 125

7.2.9

SMBus Isolation ......................................................................................................... 126

8.0

Health Management (HM)

8.1

OVERVIEW ............................................................................................................................. 127

8.2

FUNCTIONAL DESCRIPTION ................................................................................................ 127

8.2.1

Health Management Module Access ......................................................................... 127

8.2.2

SensorPath Bus ......................................................................................................... 127

8.2.3

Temperature Monitoring ............................................................................................ 129

8.2.4

Voltage Monitoring ..................................................................................................... 130

8.2.5

Device Enumeration and HM Channel Association ................................................... 130

8.2.6

SensorPath Device Setting and Scanning ................................................................. 132

8.2.7

Fan Speed Monitoring ............................................................................................... 133

8.2.8

Fan Speed Control .................................................................................................... 134

8.2.9

Event Notification ....................................................................................................... 138

8.2.10

Enhanced Thermal Control (ETC) ............................................................................. 139

8.2.11

General Configuration ............................................................................................... 139

8.3

HM SMBUS ACCESS .............................................................................................................. 140

8.3.1

Write Transaction ...................................................................................................... 140

8.3.2

Read Transaction ...................................................................................................... 140

8.4

HM LPC ACCESS REGISTERS .............................................................................................. 141

8.4.1

HM Address Register (HMADDR) ............................................................................. 142

8.4.2

HM Data Register (HMDATA) ................................................................................... 142

8.4.3

HM Status and Command Register (HMSTS) ........................................................... 142

8.4.4

HM Interrupt Status Register 1 (HMINT_STS1) ........................................................ 143

8.4.5

HM Interrupt Status Register 2 (HMINT_STS2) ........................................................ 144

8.4.6

HM Interrupt Enable Register 1 (HMINT_EN1) ......................................................... 145

8.4.7

HM Interrupt Enable Register 2 (HMINT_EN2) ......................................................... 146

8.4.8

HM Sensor Status Register 1 (HMSENS_STS1) ...................................................... 147

8.4.9

HM Sensor Status Register 2 (HMSENS_STS2) ...................................................... 148

8.4.10

HM Interrupt Status Register 3 (HMINT_STS3) ........................................................ 149

8.4.11

HM Interrupt Enable Register 3(HMINT_EN3) .......................................................... 149

8.4.12

HM Sensor Status Register 3 (HMSENS_STS3) ...................................................... 150

8.4.13

HM SMI/SCI Enable Register 1 (HMS_EN1) ............................................................. 150

8.4.14

HM SMI/SCI Enable Register 2 (HMS_EN2) ............................................................. 151

8.4.15

HM SMI/SCI Enable Register 3(HMS_EN3) .............................................................. 152

8.4.16

Events to SMI/SCI Routing Register (SMI/SCI_ROUT) ............................................ 152

8.5

HEALTH MANAGEMENT REGISTERS .................................................................................. 153

9.0

Legacy Functional Blocks

9.1

FLOPPY DISK CONTROLLER (FDC) ..................................................................................... 192

9.1.1

General Description ................................................................................................... 192

9.1.2

FDC Bitmap Summary ............................................................................................... 193

9.2

PARALLEL PORT .................................................................................................................... 194

9.2.1

General Description ................................................................................................... 194

Winbond Electronics Corp. Advanced PC Product Center

PC8374L Datasheet(PDF) 10 Page - National Semiconductor (TI)

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