W83791D Information Storage Devices, Inc, W83791D Datasheet - Page 43

• Manufacturer Part Number: W83791D
• Description: Hardware Monitor With Speech Synthesizer And Asf Functions
• Manufacturer: Information Storage Devices, Inc

PWMOUT4
PWMOUT5
PWM Circuit for FAN4-5 speed control when
select these pin to PWMOUT/FAN function
Temperature Sensing
Measuring CPU temperature by either
thermistor or diode.
VREF
GNDA
VREF
VREF
T2
T1
T2
T3
T2
R75
R81
0
R
0
30K 1%
R
R60
R63
CAPACITOR
10K 1%
10K 1%
R53
10K 1%
R49
10K 1%
R47
R
R
R
R
2N7002
MOSFET N
R
Q9
R69
MOSFET N
2N7002
Q11
4.7K
R77
R70
1K
4.7K
R78
3300p
1K
C9
R
R
R
R
RT4
THERMISTOR
THERMISTOR
RT1
RT2
THERMISTOR
RT3
THERMISTOR
PNP
Q8
3906
PNP
Q10
GNDA
3906
GNDA
10K 1%
+
47u
+
C11
47u
10K 1%
10K 1%
10K 1%
C12
D+
D-
(from PII/PIII CPU)
(for system)
(for cpu1)
(for cpu2)
(for cpu2)
+12V
JP4
HEADER 3
+12V
JP5
HEADER 3
3
2
1
3
2
1
1N4148
DIODE
1N4148
DIODE
D4
36
D5
R71
R
4.7K
OUT3/VID90
R79
R
4.7K
PWM Circuit for FAN1-3 speed control
PWMOUT1/D1
R45,R61 in order to trap
address be A0=1,A1=0
PWMOUT2/D0
R73
27K
R80
27K
R
R
VSB
R51
R58
R45
R
47K/791D
R61
R
47K/791D
R67
R76
R
10K
R82
R
10K
0
0
0
R
R
R
FAN4IN
MOSFET N
MOSFET N
2N7002
MOSFET N
2N7002
Q3
Q5
Q7
2N7002
R62
FAN5IN
R44
4.7K
1K
R54
4.7K
1K
R46
R55
4.7K
R64
1K
R
R
R
R
R
R
47u
PNP
PNP
Q2
C7
Q4
3906
3906
PNP
Q6
3906
+
+
47u
+
C8
Publication Release Date: Aug, 2001
47u
C10
+12V
+12V
Select one of the two VID Table setting.
0:Old VID Table(VRM 8.3)
+12V
Select VID Table
JP1
HEADER 3
JP2
HEADER 3
JP3
HEADER 3
3
2
1
3
2
1
3
2
1
VSB
1N4148
1N4148
1N4148
DIODE
DIODE
DIODE
D1
D2
D3
R74
R72
R
47K /791D
47K /791D
R
Revision 0.41
R48
R
4.7K
R56
R
4.7K
R65
R
4.7K
Title
Size
Date:
WINBOND ELECTRONICS CORP.
R50
27K
R57
27K
R66
27K
Custom
OUT3/VID90
OUT3/VID90
1:New VID Table(VRM 9.0)
W83782D-W83791D Application Circuit
Document Number
Tuesday, May 22, 2001
R
R
R
R52
R
10K
R59
R
10K
R68
R
10K
FAN1IN
FAN2IN
FAN3IN
W83791D
Sheet
Preliminary
2
of
5
Rev
0.2