W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 58

• Manufacturer Part Number: W83791G
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83791G

• Function: Hardware Monitor
• Topology: ADC
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Type: I²C™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FAN 1/2 Configuration Register ⎯ Index 84h (Bank 0), continued.
7.56 Fan 1 Target Temperature Register/Target Fan 1 Speed Control Register ⎯
Fan 1 target speed register for Fan Speed Cruise mode.
VTIN1 target temperature register for Thermal Cruise mode.
3-2
1
0
7
6-0
7-0
BIT
BIT
BIT
Power on default: 00h
Index 85h (Bank 0)
Reserved
FAN_TAR_T1[6:0]
FAN1_TYPE
FAN2_OB
FAN1_OB
FAN_TAR_CNT1
[7:0]
NAME
NAME
NAME
R/W
R/W
R/W
ATTRIBUTE
ATTRIBUTE
ATTRIBUTE
R/W
R/W
FAN 1 PWM Control Type.
00 - Manual PWM Control, which is automatic PWM.
(Default)
01 - Thermal Cruise mode.
10 - Fan Speed Cruise Mode.
11 - Reserved.
Enable Fan 2 as Output Buffer. Set to 1, FANPWM2 can
drive logical high or logical low. Default Pin 11 (PWMOUT2)
is open-drain.
Enable Fan 1 as Output Buffer. Set to 1, FANPWM1 can
drive logical high or logical low. Default Pin 10 (PWMOUT1)
is open-drain.
Reserved.
Fan 1 Target Temperature. Only for Thermal Cruise
mode. When the temperature 1 over the target
temperature add tolerance temperature, the smart fan
1 duty cycle will up count until the duty cycle obtain to
FFh.
Target Fan 1 Speed Control. Only for Fan Speed
Cruise Mode. When the fan 1 monitored Fan 1 Count
over the target Fan Count add tolerance, the fan duty
cycle will up/down count until the duty cycle have been
corresponding the monitored speed count.
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DESCRIPTION
Publication Release Date: April 14, 2006
DESCRIPTION
DESCRIPTION
W83791D/G
Revision 1.1