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PDF NCT7802Y Data sheet ( Hoja de datos )
| Número de pieza | NCT7802Y | |
| Descripción | Hardware Monitoring IC | |
| Fabricantes | Nuvotem Talema | |
| Logotipo |  |
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Nuvoton
Hardware Monitoring IC
NCT7802Y
with PECI 3.0 interface
Date: Feb/2012 Revision: 1.2
http://www.Datasheet4U.com
1 page  
NCT7802Y
7.2.82 GPIO Output Type Register..........................................................................................43
7.2.83 GPIO Input Data Register.............................................................................................43
7.2.84 GPIO Output Data Register ..........................................................................................43
7.2.85 BEEP Voltage Channel Enable Register ......................................................................44
7.2.86 BEEP Fan Channel Enable Register ............................................................................44
7.2.87 BEEP Temperature Channel Enable Register..............................................................44
7.2.88 BEEP Enable Register .................................................................................................45
7.2.89 Fan Control Output Type ..............................................................................................45
7.2.90 Fan Control Output Mode .............................................................................................45
7.2.91 Fan Control 1 Output Value ..........................................................................................46
7.2.92 Fan Control 2 Output Value ..........................................................................................46
7.2.93 Fan Control 3 Output Value ..........................................................................................46
7.2.94 Close-Loop Fan Control RPM mode Register and Configure Register of PECI Error
(CRPE) 46
7.2.95 Temperature to Fan mapping Relationships Register ..................................................47
7.2.96 Temperature to Fan mapping Relationships Register ..................................................47
7.2.97 Fan Control Configuration Register 1 ...........................................................................48
7.2.98 Fan Control Configuration Register 2 ...........................................................................48
7.2.99 Fan Control Configuration Register 3 ...........................................................................49
7.2.100 Fan Control Configuration Register 4 .........................................................................49
7.2.101 Close-Loop Fan Control RPM mode Tolerance Register ...........................................49
7.2.102 FANCTL Step Up Time Register ................................................................................50
7.2.103 FANCTL Step Down Time Register............................................................................50
7.2.104 Default Fan Speed Register .......................................................................................50
7.2.105 FANCTL1 PWM Prescalar Register ...........................................................................50
7.2.106 FANCTL2 PWM Prescalar Register ...........................................................................51
7.2.107 FANCTL3 PWM Prescalar Register ...........................................................................52
7.2.108 Temp1 Hystersis Register ..........................................................................................52
7.2.109 Temp2 Hystersis Register ..........................................................................................52
7.2.110 Temp3 Hystersis Register ..........................................................................................52
7.2.111 FANCTL Start Duty Cycle Register ............................................................................53
7.2.112 FANCTL Stop Time Register......................................................................................53
7.2.113 NonStop Disable Register ..........................................................................................53
7.2.114 Fan Output Min Value when PECI Error Register (FOMV).........................................53
7.2.115 Table 1 X-axis Transition Point 1 Register .................................................................54
7.2.116 Table 1 X-axis Transition Point 2 Register .................................................................54
7.2.117 Table 1 X-axis Transition Point 3 Register .................................................................54
7.2.118 Table 1 X-axis Transition Point 4 Register .................................................................54
7.2.119 Table 1 X-axis Critical Point Register .........................................................................55
7.2.120 Table 1 Y-axis Transition Point 1 Register .................................................................55
7.2.121 Table 1 Y-axis Transition Point 2 Register .................................................................55
7.2.122 Table 1 Y-axis Transition Point 3 Register .................................................................55
7.2.123 Table 1 Y-axis Transition Point 4 Register .................................................................56
7.2.124 Table 2 X-axis Transition Point 1 Register .................................................................56
- IV -
Feb, 2012
Version: 1.2
5 Page 
NCT7802Y
5.2 PIN DISCRIPTION
PIN NO. PIN NAME
TD1-
1
VREF
TD1+
2 TR1
VSEN1
3 VCC
4 VTT
5 PECI
6 RESET#
ALERT#
7
SMI#
T_CRIT#
8
BEEP
I/O
AIN
AOUT
AIN
P
P
V1
OD12
OD12
OD12
9
SDA
INts/OD12
FUNCTION
Connect to Thermal Diode 1 Cathode
VREF output for Thermistor function
Connect to Thermal Diode 1 Anode
Thermistor 1 sensing input
Voltage sensing input. Detection range is 0~2.048V
Power supply, Voltage input 3.3V±5%
It is also a voltage sensing input
Intel® CPU Vtt power
Intel® CPU PECI interface
Reset alarm output, for detect VCC power fault
Alarm output, for interrupt control (default)
Alarm output, for interrupt control
T_CRIT alarm output, for interrupt or shutdown
control. (default)
BEEP output when abnormal event occurs
(Frequency:300Hz/600Hz, Tone=500mS)
SMBus bi-directional data
10 SCL
INts SMBus Clock
FANIN1
INts Fan tachometer input (default)
11
GPIO1
INts /OD12
/OUT12
General purpose I/O function
Fan speed control PWM/DC output
FANCTL1
OUT12/OD12
/AOUT
It can be configured to PWM/DC mode by registers.
Default is PWM output
12 As DC output, 256 steps output voltage scaled to
0~VCC
GPIO2
INts /OD12
/OUT12
General purpose I/O function
FANIN2
INts Fan tachometer input (default)
13
GPIO3
INts /OD12
/OUT12
General purpose I/O function
-4-
Feb, 2012
Version: 1.2
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet NCT7802Y.PDF ] | |
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