LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 83

• 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

Register
Address
16.13.15 Register CAh PWM1 Control 3
Bits 7:4 configure the spin-up duration. When the duty cycle of PWM1 changes from zero to a non-zero value, the spin-up sequence
is activated for the specified amount of time. The available settings are defined according to this table:
CAh
SU_DUR[3] (Bit 4)
Read/
Write
R/W
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
3:0
7:0
Bit
4
Register
Control 3
PWM1
Name
SU_DUR[2:0]
SU_DUR[3]
SU_DC
Name
SU_DUR[2:0] (Bits[7:5])
Bit 7
SU_DUR[2:0]
R/W
R/W
R/W
R/W
0h
1h
2h
3h
4h
5h
6h
7h
0h
1h
2h
3h
4h
5h
6h
7h
Bit 6
This field sets the duty cycle that will be used whenever
PWM1 experiences a Spin-Up cycle. This field accepts
16 possible values that are mapped to duty cycles
according the table in the Auto-Fan Control section .
Setting this field to 0h will effectively disable Spin-Up.
Most significant bit that sets the Spin-up duration for
PWM1.
Least significant bits that set the Spin-Up duration for
PWM1 least significant bits.
Bit 5
83
SU_DUR[3]
Bit 4
Description
Bit 3
Spin-up disabled
Spin-Up Time
100 ms
250 ms
400 ms
700 ms
Bit 2
10 s
12 s
14 s
16 s
18 s
20 s
2 s
4 s
6 s
8 s
1s
SU_DC
Bit 1
Bit 0
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Default
Value
00h