LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 46

• 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

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Register
Address
Register
Address
16.7.5 Register 35h PI/LUT Fan Control Bindings
16.7.6 Register 36h PI Controller Minimum PWM and Hysteresis
35h
36h
3:0
7:4
Bit
Bit
0
1
2
3
4
5
6
7
Read/
Read/
Write
Write
R/W
R/W
PI_MinPWM[3:0]
PI MinPWM and
Register Name
Register Name
PI_Hyst[3:0]
PWM1_PI
PWM2_PI
Fan Control
LUT1_Z1
LUT2_Z2
LUT3_Z1
LUT4_Z2
PI_Hyst[3:0]
Bindings
Name
PI_Z1
PI_Z2
Name
Hyst
Ch
Dh
Ah
Bh
Eh
Fh
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
LUT4
Bit 7
Bit 7
_Z2
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PI_MinPWM[3:0]
LUT3
Bit 6
Bit 6
_Z1
Description
When this bit is set, the PI controller is bound to the P1 temperature (zone
1). This also changes the available filtering options for the P1 temperature.
When this bit is set, the PI controller is bound to the P2 temperature (zone
2). This also changes the available filtering options for the P2 temperature
zone.
When this bit is set, the PWM1 output is bound to the PI controller.
When this bit is set, the PWM2 output is bound to the PI controller.
When this bit is set, LUT1 will use the P1 temperature (zone 1) instead of
the Internal temperature (zone 3).
When this bit is set, LUT2 will use the P2 temperature (zone2) instead of
the External Digital temperature (zone 4).
When this bit is set, LUT3 will use the P1 temperature (zone1) instead of
the Internal temperature (zone 3).
When this bit is set, LUT4 will use the P2 temperature (zone 2) instead of
the External Digital temperature (zone 4).
Description
Sets the hysteresis for the PI Loop fan controller in 0.5°C steps up to 7.5°
C.
Defines the minimum PWM output for the PI Loop fan controller in 6.25%
steps up to 93.75%.
LUT2
Bit 5
Bit 5
_Z2
46
LUT1
Bit 4
Bit 4
_Z1
PWM2
Bit 3
Bit 3
_PI
Hysteresis (°C)
PWM1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
Bit 2
Bit 2
0
_PI
PI_Hyst[3:0]
PI_Z2
Bit 1
Bit 1
PI_Z1
Bit 0
Bit 0
Default
Default
Value
Value
30h
00h