LM96000CIMT National Semiconductor, LM96000CIMT Datasheet - Page 20

• Manufacturer Part Number: LM96000CIMT
• Description: IC,Data Acquisition System,7-CHANNEL,8-BIT,TSSOP,24PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM96000CIMT

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Register
Address
62h
Functional Description
Above (Zone 1 Fan Temp Limit) + (Zone 1 Range), the duty cycle will be 100%.
PWM frequency bits [3:0]
The PWM frequency bits [3:0] determine the PWM frequency for the fan.The LM96000 has high and low frequency ranges for the
PWM outputs, that are controlled by the HLFRQ bit.
PWM Frequency Selection (Default = 0011 = 30.04 Hz).
Range Selection RAN [3:0]
This register becomes Read Only when the Ready/Lock/Start/Override register Lock bit is set. Any further attempts to write to this
register shall have no effect. After power up the default value is used whenever the Ready/Lock/Start/Override register Start bit
is cleared even though modifications to this register are possible.
4.16 Registers 62, 63h: Min/Off, Spike Smoothing
HLFRQ
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Read/
Write
R/W
Register
Name
Min/Off, Zone1 Spike Smoothing OFF3
RAN [3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Freq [2:0]
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
TABLE 6. Register Setting vs PWM Frequency
(Continued)
Bit 7
(MSB)
Bit 6
OFF2 OFF1 RES ZN1E ZN1-2 ZN1-1 ZN1-0 00h
20
Range (˚C)
2
2.5
3.33
4
5
6.67
8
10
13.33
16
20
26.67
32
40
53.33
80
Bit 5
PWM Frequency
10.01 Hz
15.02 Hz
23.14 Hz
30.04 Hz
38.16 Hz
47.06 Hz
61.38 Hz
94.12 Hz
22.5 kHz
24 kHz
25.7 kHz
25.7 kHz
27.7 kHz
27.7 kHz
30 kHz
30 kHz
Bit 4 Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
Lock?
U