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NCT6779D Nuvoton LPC I/O Date: March 29th, 2012 Revision 1.0
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NCT6779D
Nuvoton LPC I/O
Date: March 29
th
, 2012 Revision 1.0
Free Datasheet http://www.Datasheet4U.com
NCT6779D
Publication Release Date: March 29, 2012
-I- version: 1.0
Table of Contents
1. GENERAL DESCRIPTION.........................................................................................................................1
2. FEATURES....................................................................................................................................................2
3. BLOCK DIAGRAM......................................................................................................................................5
4. PIN LAYOUT ................................................................................................................................................6
5. PIN DESCRIPTION......................................................................................................................................7
5.1 LPC INTERFACE .......................................................................................................................................8
5.2 MULTI-MODE PARALLEL PORT ................................................................................................................8
5.3 SERIAL PORT INTERFACE........................................................................................................................10
5.4 KBC INTERFACE ....................................................................................................................................11
5.5 CIR INTERFACE ......................................................................................................................................11
5.6 HARDWARE MONITOR INTERFACE .........................................................................................................11
5.7 INTEL® PECI INTERFACE.......................................................................................................................13
5.8 ADVANCED CONFIGURATION & POWER INTERFACE...............................................................................13
5.9 ADVANCED SLEEP STATE CONTROL CONTROL ......................................................................................15
5.10 PORT 80 MESSAGE DISPLAY & LED CONTROL ......................................................................................15
5.11 SMBUS INTERFACE ................................................................................................................................15
5.12 POWER PINS ...........................................................................................................................................16
5.13 AMD POWER-ON SEQUENCE .................................................................................................................16
5.14 AMD SB-TSI INTERFACE ......................................................................................................................16
5.15 DUAL VOLTAGE CONTROL.....................................................................................................................17
5.16 DSW ......................................................................................................................................................17
5.17 IR...........................................................................................................................................................17
5.18 GENERAL PURPOSE I/O PORT .................................................................................................................17
5.18.1 GPIO-0 Interface...........................................................................................................................17
5.18.2 GPIO-1 Interface...........................................................................................................................18
5.18.3 GPIO-2 Interface...........................................................................................................................19
5.18.4 GPIO-3 Interface...........................................................................................................................20
5.18.5 GPIO-4 Interface...........................................................................................................................20
5.18.6 GPIO-5 Interface...........................................................................................................................21
5.18.7 GPIO-6 Interface...........................................................................................................................22
5.18.8 GPIO-7 Interface...........................................................................................................................23
5.18.9 GPIO-8 Interface...........................................................................................................................23
5.19 STRAPPING PINS .....................................................................................................................................24
5.20 INTERNAL PULL-UP, PULL-DOWN PINS ....................................................................................................25
5.21 STRAPPING MULTI FUNCTION PIN CONTROL ............................................................................................26
6. GLUE LOGIC..............................................................................................................................................28
6.1 ACPI GLUE LOGIC .................................................................................................................................28
6.2 BKFD_CUT & LATCH_BKFD_CUT..................................................................................................31
6.3 3VSBSW# .............................................................................................................................................32
6.4 PSON# BLOCK DIAGRAM ......................................................................................................................33
6.5 PWROK.................................................................................................................................................34
6.6 FRONT PANEL LEDS...............................................................................................................................35
6.6.1 Automatic Mode.............................................................................................................................35
6.6.2 Manual Mode.................................................................................................................................36
6.6.3 S0~S5 LED Blink Block Diagram..................................................................................................36
6.6.4 LED Pole (LED_POL)...................................................................................................................37
6.6.5 Deeper Sleeping State Detect Function .........................................................................................38
6.7 ADVANCED SLEEP STATE CONTROL (ASSC) FUNCTION ........................................................................40
6.7.1 When ASSC is disabled..................................................................................................................40
6.7.2 When ASSC is enabled (Enter into Deeper Sleeping State)...........................................................41
6.7.3 When ASSC is enabled (Exit Deeper Sleeping State).....................................................................41
Free Datasheet http://www.Datasheet4U.com
NCT6779D
Publication Release Date: March 29, 2012
-II- version: 1.0
6.7.4
SLP_S5#_LATCH Control Function..............................................................................................42
6.8 INTEL DSW FUNCTION...........................................................................................................................43
6.8.1 Enter DSW State timing diagram...................................................................................................43
6.8.2 Exit DSW State timing diagram.....................................................................................................44
6.8.3 Application Circuit ........................................................................................................................44
6.9 AMD POWER-ON SEQUENCE .................................................................................................................45
7. CONFIGURATION REGISTER ACCESS PROTOCOL.......................................................................47
7.1 CONFIGURATION SEQUENCE...................................................................................................................49
7.1.1 Enter the Extended Function Mode ...............................................................................................49
7.1.2 Configure the Configuration Registers..........................................................................................49
7.1.3 Exit the Extended Function Mode..................................................................................................50
7.1.4 Software Programming Example...................................................................................................50
8. HARDWARE MONITOR ..........................................................................................................................51
8.1 GENERAL DESCRIPTION..........................................................................................................................51
8.2 ACCESS INTERFACES ..............................................................................................................................51
8.3 LPC INTERFACE .....................................................................................................................................51
8.4 I
2
C INTERFACE........................................................................................................................................53
8.5 ANALOG INPUTS .....................................................................................................................................54
8.5.1 Voltages Over 2.048 V or Less Than 0 V.......................................................................................54
8.5.2 Voltage Data Format.....................................................................................................................55
8.5.3 Temperature Data Format.............................................................................................................56
8.6 PECI.......................................................................................................................................................58
8.7 FAN SPEED MEASUREMENT AND CONTROL............................................................................................60
8.7.1 Fan Speed Reading........................................................................................................................60
8.7.2 Fan Speed Calculation by Fan Count Reading..............................................................................60
8.7.3 Fan Speed Calculation by Fan RPM Reading...............................................................................60
8.7.4 Fan Speed Control.........................................................................................................................60
8.7.5 SMART FAN
TM
Control .................................................................................................................62
8.7.6 Temperature Source & Reading for Fan Control..........................................................................62
8.8 SMART FAN
TM
I...................................................................................................................................63
8.8.1 Thermal Cruise Mode....................................................................................................................63
8.8.2 Speed Cruise Mode........................................................................................................................65
8.9 SMART FAN
TM
IV & CLOSE LOOP FAN CONTROL MODE ....................................................................67
8.9.1 Step Up Time / Step Down Time ....................................................................................................71
8.9.2 Fan Output Step.............................................................................................................................71
8.9.3 Revolution Pulse Selection.............................................................................................................72
8.9.4 Weight Value Control ....................................................................................................................72
8.10 ALERT AND INTERRUPT ..........................................................................................................................75
8.10.1 SMI# Interrupt Mode .....................................................................................................................75
8.10.2 Voltage SMI# Mode .......................................................................................................................75
8.10.3 Fan SMI# Mode .............................................................................................................................76
8.10.4 Temperature SMI# Mode...............................................................................................................76
8.10.5 OVT# Interrupt Mode ....................................................................................................................80
8.10.6 Caseopen Detection.......................................................................................................................81
8.11 POWER MEASUREMENT..........................................................................................................................82
9. HARDWARE MONITOR REGISTER SET ............................................................................................83
9.1 ADDRESS PORT (PORT X5H) ...................................................................................................................83
9.2 DATA PORT (PORT X6H).........................................................................................................................83
9.3 SYSFANOUT PWM OUTPUT FREQUENCY CONFIGURATION REGISTER – INDEX 00H (BANK 0)...........84
9.4 SYSFANOUT OUTPUT VALUE SELECT REGISTER – INDEX 01H (BANK 0)............................................85
9.5 CPUFANOUT PWM OUTPUT FREQUENCY CONFIGURATION REGISTER – INDEX 02H (BANK 0) ..........85
9.6 CPUFANOUT OUTPUT VALUE SELECT REGISTER – INDEX 03H (BANK 0) ...........................................86
9.7 SYSFANOUT CONFIGURATION REGISTER I – INDEX 04H (BANK 0) .....................................................86
Free Datasheet http://www.Datasheet4U.com
NCT6779D
Publication Release Date: March 29, 2012
-III- version: 1.0
9.8
RESERVED REGISTER – INDEX 05H ~ 0FH (BANK 0)...............................................................................87
9.9 AUXFANOUT0 PWM OUTPUT FREQUENCY CONFIGURATION REGISTER – INDEX 10H (BANK 0)........87
9.10 AUXFANOUT0 OUTPUT VALUE SELECT REGISTER – INDEX 11H (BANK 0).........................................88
9.11 AUXFANOUT1 PWM OUTPUT FREQUENCY CONFIGURATION REGISTER – INDEX 12H (BANK 0)........88
9.12 AUXFANOUT1 OUTPUT VALUE SELECT REGISTER – INDEX 13H (BANK 0).........................................89
9.13 AUXFANOUT2 PWM OUTPUT FREQUENCY CONFIGURATION REGISTER – INDEX 14H (BANK 0)........89
9.14 AUXFANOUT2 OUTPUT VALUE SELECT REGISTER – INDEX 15H (BANK 0).........................................90
9.15 RESERVED REGISTER – INDEX 16-17H (BANK 0)....................................................................................91
9.16 OVT# CONFIGURATION REGISTER – INDEX 18H (BANK 0).....................................................................91
9.17 RESERVED REGISTERS – INDEX 19H ~ 1FH (BANK 0) .............................................................................91
9.18 VALUE RAM ⎯ INDEX 27H ~ 3FH (BANK 0) .........................................................................................91
9.19 CONFIGURATION REGISTER – INDEX 40H (BANK 0)................................................................................92
9.20 INTERRUPT STATUS REGISTER 1 – INDEX 41H (BANK 0) ........................................................................92
9.21 INTERRUPT STATUS REGISTER 2 – INDEX 42H (BANK 0) ........................................................................93
9.22 SMI# MASK REGISTER 1 – INDEX 43H (BANK 0)....................................................................................93
9.23 SMI# MASK REGISTER 2 – INDEX 44H (BANK 0)....................................................................................94
9.24 INTERRUPT STATUS REGISTER 4 – INDEX 45H (BANK 0) ........................................................................94
9.25 SMI# MASK REGISTER 3 – INDEX 46H (BANK 0)....................................................................................95
9.26 RESERVED REGISTER – INDEX 47H (BANK 0).........................................................................................95
9.27 SERIAL BUS ADDRESS REGISTER – INDEX 48H (BANK 0) .......................................................................95
9.28 RESERVED REGISTER – INDEX 49H ~ 4BH (BANK 0)...............................................................................96
9.29 SMI/OVT CONTROL REGISTER1 – INDEX 4CH (BANK 0).......................................................................96
9.30 FAN IN/OUT CONTROL REGISTER – INDEX 4DH (BANK 0)...................................................................96
9.31 BANK SELECT REGISTER – INDEX 4EH (BANK 0) ...................................................................................97
9.32 NUVOTON VENDOR ID REGISTER – INDEX 4FH (BANK 0)......................................................................98
9.33 FAN IN/OUT CONTROL REGISTER – INDEX 50H (BANK 0)....................................................................98
9.34 NUVOTON VENDOR ID REGISTER – INDEX 4FH (BANK 0)......................................................................98
9.35 RESERVED REGISTER – INDEX 51H ~ 57H (BANK 0) ...............................................................................99
9.36 CHIP ID – INDEX 58H (BANK 0)..............................................................................................................99
9.37 RESERVED REGISTER – INDEX 59H ~ 5CH (BANK 0)...............................................................................99
9.38 VBAT MONITOR CONTROL REGISTER – INDEX 5DH (BANK 0)..............................................................99
9.39 CURRENT MODE ENABLE REGISTER – INDEX 5EH (BANK 0)................................................................100
9.40 RESERVED REGISTER – INDEX 5F (BANK 0) .........................................................................................101
9.41 PORT 80 DATA INPUT REGISTER – INDEX 60 (BANK 0) ...................................................................101
9.42 RESERVED REGISTER – INDEX 61F ~ 72F (BANK 0) .............................................................................101
9.43 MONITOR TEMPERATURE 1 REGISTER (INTEGER VALUE)- INDEX 73H (BANK 0) .........................101
9.44 MONITOR TEMPERATURE 1 REGISTER (FRACTIONAL VALUE)- INDEX 74H (BANK 0)...................101
9.45 MONITOR TEMPERATURE 2 REGISTER (INTEGER VALUE)- INDEX 75H (BANK 0) .........................102
9.46 MONITOR TEMPERATURE 2 REGISTER (FRACTIONAL VALUE)- INDEX 76H (BANK 0)...................102
9.47 MONITOR TEMPERATURE 3 REGISTER (INTEGER VALUE)- INDEX 77H (BANK 0) .........................102
9.48 MONITOR TEMPERATURE 3 REGISTER (FRACTIONAL VALUE)- INDEX 78H (BANK 0)...................103
9.49 MONITOR TEMPERATURE 4 REGISTER (INTEGER VALUE)- INDEX 79H (BANK 0) .........................103
9.50 MONITOR TEMPERATURE 4 REGISTER (FRACTIONAL VALUE)- INDEX 7AH (BANK 0)..................103
9.51 MONITOR TEMPERATURE 5 REGISTER (INTEGER VALUE)- INDEX 7BH (BANK 0).........................104
9.52 MONITOR TEMPERATURE 5 REGISTER (FRACTIONAL VALUE)- INDEX 7CH (BANK 0)..................104
9.53 RESERVED REGISTER – INDEX 7DH~ADH (BANK 0)............................................................................104
9.54 PECI TEMPERATURE READING ENABLE FOR SMIOVT AND SMART FAN CONTROL REGISTER – INDEX
AEH (BANK 0)..................................................................................................................................................104
9.55 BEEP CONTROL REGISTER 1 – INDEX B2H (BANK0) ...........................................................................105
9.56 BEEP CONTROL REGISTER 2 – INDEX B3H (BANK0) ...........................................................................106
9.57 BEEP CONTROL REGISTER 3 – INDEX B4H (BANK0) ...........................................................................106
9.58 BEEP CONTROL REGISTER 4 – INDEX B5H (BANK0) ...........................................................................107
9.59 SYSFAN MONITOR TEMPERATURE SOURCE SELECT REGISTER/ STOPDUTY ENABLE REGISTER –
INDEX 00H (BANK 1)........................................................................................................................................108
9.60 SYSFAN TARGET TEMPERATURE REGISTER / SYSFANIN TARGET SPEED_L REGISTER – INDEX 01H
(BANK 1)..........................................................................................................................................................109
Free Datasheet http://www.Datasheet4U.com
NCT6779D
Publication Release Date: March 29, 2012
-IV- version: 1.0
9.61
SYSFAN MODE REGISTER / SYSFAN TOLERRANCE REGISTER – INDEX 02H (BANK 1)...............109
9.62 SYSFANOUT STEP UP TIME REGISTER – INDEX 03H (BANK 1)..........................................................109
9.63 SYSFANOUT STEP DOWN TIME REGISTER – INDEX 04H (BANK 1)....................................................110
9.64 SYSFANOUT STOP VALUE REGISTER – INDEX 05H (BANK 1)............................................................110
9.65 SYSFANOUT START-UP VALUE REGISTER – INDEX 06H (BANK 1)....................................................110
9.66 SYSFANOUT STOP TIME REGISTER – INDEX 07H (BANK 1)...............................................................111
9.67 RESERVED REGISTER – INDEX 08H (BANK 1).......................................................................................111
9.68 SYSFANOUT OUTPUT VALUE SELECT REGISTER – INDEX 09H (BANK 1)..........................................111
9.69 RESERVED REGISTER – INDEX 0AH~0BH (BANK 1) .............................................................................111
9.70 SYSFANIN TOLERANCE_H / TARGET SPEED_H REGISTER – INDEX 0CH (BANK 1)............................112
9.71 RESERVED REGISTER – INDEX 0DH~1FH (BANK 1)..............................................................................112
9.72 SMART FAN IV SYSFANOUT STEP REGISTER – INDEX 20H (BANK 1)...........................................112
9.73 SYSFAN (SMART FAN
TM
IV) TEMPERATURE 1 REGISTER(T1) – INDEX 21H (BANK 1)....................112
9.74 SYSFAN (SMART FAN
TM
IV) TEMPERATURE 2 REGISTER(T2) – INDEX 22H (BANK 1)....................112
9.75 SYSFAN (SMART FAN
TM
IV) TEMPERATURE 3 REGISTER(T3) – INDEX 23H (BANK 1)....................113
9.76 SYSFAN (SMART FAN
TM
IV) TEMPERATURE 4 REGISTER(T4) – INDEX 24H (BANK 1)....................113
9.77 RESERVED REGISTER – INDEX 25H~26H (BANK 1)...............................................................................113
9.78 SYSFAN (SMART FAN
TM
IV) DC/PWM 1 REGISTER – INDEX 27H (BANK 1)...................................113
9.79 SYSFAN (SMART FAN
TM
IV) DC/PWM 2 REGISTER – INDEX 28H (BANK 1)...................................114
9.80 SYSFAN (SMART FAN
TM
IV) DC/PWM 3 REGISTER – INDEX 29H (BANK 1)...................................114
9.81 SYSFAN (SMART FAN
TM
IV) DC/PWM 4 REGISTER – INDEX 2AH (BANK 1)..................................114
9.82 RESERVED REGISTER – INDEX 2BH~30H (BANK 1)..............................................................................114
9.83 SYSFAN 3-WIRE ENABLE REGISTER – INDEX 31H (BANK 1)..............................................................114
9.84 RESERVED REGISTER – INDEX 32H~34H(BANK 1)................................................................................115
9.85 SYSFAN (SMART FAN
TM
IV) CRITICAL TEMPERATURE REGISTER – INDEX 35H (BANK 1)..............115
9.86 SYSFAN ENABLE CRITICAL DUTY – INDEX 36H (BANK 1).................................................................115
9.87 SYSFAN CRITICAL DUTY REGISTER – INDEX 37H (BANK 1)...............................................................115
9.88 SYSFANOUT CRITICAL TEMPERATURE TOLERANCE REGISTER – INDEX 38H (BANK 1) ....................116
9.89 WEIGHT VALUE CONFIGURATION REGISTER – INDEX 39H (BANK 1)....................................................116
9.90 SYSFANOUT TEMPERATURE STEP REGISTER – INDEX 3AH (BANK 1)...............................................117
9.91 SYSFANOUT TEMPERATURE STEP TOLERANCE REGISTER – INDEX 3BH (BANK 1)...........................117
9.92 SYSFANOUT WEIGHT STEP REGISTER – INDEX 3CH (BANK 1) .........................................................117
9.93 SYSFANOUT TEMPERATURE BASE REGISTER – INDEX 3DH (BANK 1)..............................................118
9.94 SYSFANOUT TEMPERATURE FAN DUTY BASE REGISTER – INDEX 3EH (BANK 1).............................118
9.95 SYSFAN PECIERR DUTY ENABLE REGISTER – INDEX 3FH (BANK 1)..............................................118
9.96 RESERVED REGISTER – INDEX 40H (BANK 1).......................................................................................118
9.97 SYSFANOUT PRE-CONFIGURED REGISTER FOR PECI ERROR – INDEX 41H (BANK 1).......................118
9.98 RESERVED REGISTER – INDEX 42H ~ 4FH (BANK 1).............................................................................119
9.99 SMIOVT2 TEMPERATURE SOURCE (HIGH BYTE) REGISTER – INDEX 50H (BANK 1) ...........................119
9.100 SMIOVT2 TEMPERATURE SOURCE (LOW BYTE) REGISTER – INDEX 51H (BANK 1)........................119
9.101 SMIOVT2 TEMPERATURE SOURCE CONFIGURATION REGISTER – INDEX 52H (BANK 1) .................119
9.102 SMIOVT2 TEMPERATURE SOURCE HYSTERESIS (HIGH BYTE) REGISTER – INDEX 53H (BANK 1)...120
9.103 SMIOVT2 TEMPERATURE SOURCE HYSTERESIS (LOW BYTE) REGISTER – INDEX 54H (BANK 1)....120
9.104 SMIOVT2 TEMPERATURE SOURCE OVER-TEMPERATURE (HIGH BYTE) REGISTER – INDEX 55H
(BANK1) 120
9.105 SMIOVT2 TEMPERATURE SOURCE OVER-TEMPERATURE (LOW BYTE) REGISTER – INDEX 56H (BANK
1) 121
9.106 RESERVED REGISTER – INDEX 57H ~ FFH (BANK 1).........................................................................121
9.107 CPUFAN MONITOR TEMPERATURE SOURCE SELECT REGISTER/ STOPDUTY ENABLE REGISTER –
INDEX 00H (BANK 2)........................................................................................................................................121
9.108 CPUFAN TARGET TEMPERATURE REGISTER / CPUFANIN TARGET SPEED_L REGISTER – INDEX 01H
(BANK 2) 122
9.109 CPUFAN MODE REGISTER / CPUFAN TOLERRANCE REGISTER – INDEX 02H (BANK 2) ..........122
9.110 CPUFANOUT STEP UP TIME REGISTER – INDEX 03H (BANK 2) .....................................................123
9.111 CPUFANOUT STEP DOWN TIME REGISTER – INDEX 04H (BANK 2) ...............................................123
9.112 CPUFANOUT STOP VALUE REGISTER – INDEX 05H (BANK 2) .......................................................123
Free Datasheet http://www.Datasheet4U.com
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