W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 69

• 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

7.83 FAN 4 Duty Cycle Select Register—A0h (Bank 0)
Power on default: FFh
7.84 FAN 5 Duty Cycle Select Register—A1h (Bank 0)
Power on default: FFh
7.85 BEEP Control Register 3 ⎯ Index A3h (Bank 0)
Power on default: 00h ; Reset by MR.
7-0
7-0
7
6
5
4
3
BIT
BIT
BIT
F4_DC[7:0]
F5_DC[7:0]
EN_USER_
BP
FAN5_BP
FAN4_BP
EN_TART3
_BP
EN_TART2
_BP
NAME
NAME
NAME
R/W
R/W
ATTRIBUTE
ATTRIBUTE
R/W
R/W
R/W
R/W
R/W
ATTRIBUTE
Fan 4 Duty Cycle. This 8-bit register determines the number
of input clock cycles, out of 256-cycle period, during which the
PWM output is high. During smart fan3 control mode, read this
register would return smart fan duty cycle.
00h: PWM output is always logical Low.
FFh: PWM output is always logical High.
XXh: PWM output logical High percentage is (XX/256*100%)
during one cycle.
Fan 5 Duty Cycle. This 8-bit register determines the number
of input clock cycles, out of 256-cycle period, during which the
PWM output is high. During smart fan3 control mode, read this
register would return smart fan duty cycle.
00h: PWM output is always logical Low.
FFh: PWM output is always logical High.
XXh: PWM output logical High percentage is (XX/256*100%)
during one cycle.
User defines BEEP output function. Write 1, the BEEP is
always active. Write 0, this function is inactive. (Default 0)
Enable BEEP output from FAN5 Write 1; enable BEEP output.
Set 0 (default value), it will be disable BEEP tone output.
Enable BEEP output from FAN4. Write 1; enable BEEP
output. Set 0 (default value), it will be disable BEEP tone
output.
Enable BEEP output from Target temperature 3. Write 1;
enable BEEP output. Set 0 (default value), it will be disable
BEEP tone output.
Enable BEEP output from Target temperature 2. Write 1;
enable BEEP output. Set 0 (default value), it will be disable
BEEP tone output.
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DESCRIPTION
DESCRIPTION
DESCRIPTION
Publication Release Date: April 14, 2006
W83791D/G
Revision 1.1