LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 33

• 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

Loc
k
FACTORY REGISTERS
x
“REMOTE DIODE” MODE SELECT
x
VALUE REGISTER SECTION 1
HIGH RESOLUTION PWM OVERIDE REGISTERS
x
x
x
x
EXTENDED RESOLUTION TEMPERATURE VALUE REGISTERS
16.0 Registers
16.1 REGISTER WARNINGS
In most cases, reserved registers and register bits return zero when read. This should not be relied upon, since reserved registers
can be used for future expansion of the LM96194 functions.
Some registers have “N/D” for their default value. This means that the power-up default of the register is not defined. In the case
of value registers, care should be taken to ensure that software does not read a value register until the associated measurement
function has acquired a measurement. This applies to temperatures, voltages, fan RPM, and PROCHOT monitoring.
16.2 REGISTER SUMMARY TABLE
XOR Test
SMBus Test
Reserved
Transistor Mode Select
Zone 1b (CPU Diode b) Temp
Zone 2b (MMBT3904 Diode b) Temp
Zone 1b (CPU Diode b) Filtered Temp 08h
Zone 2b (MMBT3904 Diode b) Fitlered
Temp
PWM1 8-bit Duty Cycle Value
PWM2 8-bit Duty Cycle Value
PWM1 Duty Cycle Override (low byte) 0Ch
PWM1 Duty Cycle Override (high byte) 0Dh
PWM2 Duty Cycle Override (low byte) 0Eh
PWM2 Duty Cycle Override (high byte) 0Fh
Z1a_LSB
Z1a_MSB
Z1b_LSB
Z1b_MSB
Z2a_LSB
Register Name
N/D
N/A
R
R/W
RWC
00h
01h
02h-04h N/D
05h
06h
07h
09h
0Ah
0Bh
10h
11h
12h
13h
14h
Address Default
Term
00h
00
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
Not Defined
Not Applicable
Read Only
Read or Write
Read or Write to Clear
Register Key
33
Description
Used to set the XOR test tree mode
SMBus read/write test register
Selects Diode Mode (default) or Transistor Mode for “Remote
Diode” measurements
Measured value of remote thermal diode temperature channel 1b
Measured value of remote thermal diode temperature channel 2b
Filtered value of remote thermal diode temperature channel 1b
Filtered value of remote thermal diode temperature channel 2b
8- bit value of the PWM1 duty cycle.
8-bit value of the PWM2 duty cycle
Lower byte of the high resolution PWM1 duty cycle register
Upper byte of the high resolution PWM1 duty cycle register
Lower byte of the high resolution PWM2 duty cycle register
Upper byte of the high resolution PWM2 duty cycle register
Zone 1a (CPU) extended resolution unfiltered temperature value
register, least-significant byte
Zone 1a (CPU) extended resolution unfiltered temperature value
register, most-significant byte
Zone 1b (CPU) extended resolution unfiltered temperature value
register, least-significant-byte
Zone 1b (CPU) extended resolution unfiltered temperature value
register, most-significant byte
Zone 2a (MMBT2904) extended resolution unfiltered temperature
value register, least-significant-byte
Description
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