LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 77

• Manufacturer Part Number: LM96194CISQ/NOPB
• Description: IC TRUTHERM HDWR MONITOR 48-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®, TruTherm®r

Specifications of LM96194CISQ/NOPB

• Function: Fan Control, Temp Monitor
• Topology: ADC (Sigma Delta), Comparator, Fan Control, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 85°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM96194CISQTR

16.13.8 Register C3h LUT 1/2 MinPWM and Hysteresis
16.13.9 Register C4h LUT 3/4 MinPWM and Hysteresis
Register
Address
Register
Address
C3h
C4h
Read/
Read/
Write
Write
R/W
R/W
3:0
7:4
3:0
7:4
Bit
Bit
LUT_FC_TH12
LUT_FC_TH34
MinPWM and
MinPWM and
MinPWM12
MinPWM34
Hysteresis
Hysteresis
Register
Register
LUT 1/2
LUT 3/4
Name
Name
Name
Name
R/W
R/W
R/W
R/W
R/W
R/W
Bit 7
Bit 7
This field sets the amount of hysteresis (in degrees C)
that is used by the auto-fan control for LUT 1 and 2. This
should be set greater than 0 to avoid unwanted
oscillation between two steps in the look-up table. The
resolution of this field is controlled by Special Function
Control 2 register bit 4.
This field determines the duty cycle that the auto-fan
control requests for LUT 1 and 2 if the temperature for
the given zone falls below the programmed base
temperature for the assigned LUT. This field accepts 16
possible values 13 of which are mapped to duty cycles
according the table in the Auto-Fan Control section .
This field sets the amount of hysteresis (in degrees C)
that is used by the auto-fan control for LUT 3 and 4. This
should be set greater than 0 to avoid unwanted
oscillation between two steps in the look-up table. The
resolution of this field is controlled by Special Function
Control 2 register bit 5.
This field determines the duty cycle that the auto-fan
control requests for LUT 3 and 4 if the temperature for
the given zone falls below the programmed base
temperature for the assigned LUT. This field accepts 16
possible values 13 of which are mapped to duty cycles
according the table in the Auto-Fan Control section .
Bit 6
Bit 6
MinPWM12
MinPWM34
77
Bit 5
Bit 5
Bit 4
Bit 4
Description
Description
Bit 3
Bit 3
LUT_FC_TH12
LUT_FC_TH34
Bit 2
Bit 2
Bit 1
Bit 1
Bit 0
Bit 0
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Default
Default
Value
Value
00h
00h