LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 84

• 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
16.13.16 Register CBh PWM1 Control 4
CBh
LUT Duty Cycle Assignments when HF_LUT_MAP='0'
LUT Step
10
11
12
13
LUT 1-4 Duty Cycle Assignment with PWM Frequency=22.5kHz as Controlled by the HF_LUT_MAP bit.
1
2
3
4
5
6
7
8
9
Read/
Write
R/W
2:0
7:4
Bit
3
PWM1 Control 4
HF_LUT_MAP
Register
FREQ1
Name
Name
RES
Duty Cycle (%)
31.25
43.75
56.25
62.25
68.75
81.25
93.75
37.5
87.5
100
25
50
75
FREQ1
0h
1h
2h
3h
4h
5h
6h
7h
R/W
R/W
R/W
R
Bit 7
RES
PWM1 frequency control. Setting this value controls the
frequency of the PWM1 output according to the table
below.
Selects between two different maps for the PWM duty
cycle assignment in the LUT when the PWM frequency
is set to 22.5kHz. All 4 LUTs, VRD ramp, PROCHOT
ramp, spin-up and low-resolution overide will be affected
by this bit. When this bit is set the LUT duty cycle
assignment will increment 6.25% steps starting at 25%.
When this bit is cleared the duty cycle mapping will
match the Low Frequency table. This bit has no effect
when the PWM frequency is set to anything other than
22.5kHz and the low PWM frequency mapping will be
used.
Reserved
Bit 6
RES
84
Bit 5
RES
LUT Duty Cycle Assignments when HF_LUT_MAP='1'
Frequency of
LUT Step
PWM1 (Hz)
Bit 4
RES
10
11
12
13
22500
1
2
3
4
5
6
7
8
9
Description
96
84
72
60
48
36
12
(Low PWM Frequency Mapping)
HF_LUT
_MAP
Bit 3
Bit 2
Duty Cycle (%)
FREQ1
Bit 1
28.57
32.14
35.71
39.29
42.86
46.43
53.57
57.14
71.43
85.71
100
25
50
Bit 0
Default
Value
00h