W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 66

• 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

7.76 Fan 3 Start-up Duty Cycle Register ⎯ Index 99h (Bank 0)
Power on default: 01h
7.77 Fan 3 Stop Time Register ⎯ Index 9Ah (Bank 0)
Power on default: 3Ch
7.78 Interrupt Status Register III ⎯ Index 9Bh (Bank 0)
Power on default: 00h
7-0
7-0
7
6
5
4
3
2
1
0
BIT
BIT
BIT
START_DC3[7:0]
STOP_TIME3[7:0]
Reserved
FAN5
FAN4
VBAT
VSB
TART3
TART2
TART1
NAME
NAME
NAME
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
ATTRIBUTE
ATTRIBUTE
ATTRIBUTE
R/W
R/W
Reserved.
A one indicates the fan count limit of FAN5 has been
exceeded.
A one indicates the fan count limit of FAN4 has been
exceeded.
A one indicates a high or low limit of VBAT has been
exceeded.
A one indicates a high or low limit of VSB has been exceeded.
Target Temperature 3 Status. A one indicates VTIN3 with
Fan 3 full speed can not be in the specific range after 3
minutes.
Target Temperature 2 Statue. A one indicates VTIN2
temperature with Fan 2 full speed can not be in the specific
range after 3 minutes.
Target Temperature 1 Statue. A one indicates VTIN1
temperature with Fan 1 full speed can not be in the specific
range after 3 minutes.
In Thermal Cruise mode, PWM duty will increase from 0
to this register value to provide a minimum duty cycle to
turn on the fan. This register should be written a fan
start-up duty cycle.
In Thermal Cruise mode, this register determines the
time of which PWM duty is from stop duty cycle to 0 duty
cycle. The unit of this register is 0.1 second. The default
value is 6 seconds.
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DESCRIPTION
Publication Release Date: April 14, 2006
DESCRIPTION
DESCRIPTION
W83791D/G
Revision 1.1