AMC6821-Q1 Datasheet, PDF (43/54 Pages) Texas Instruments – INTELLIGENT TEMPERATURE MONITOR AND PWM FAN CONTROLLER

AMC6821-Q1
www.ti.com ...................................................................................................................................................................................................... SBAS475 – JUNE 2009
Remote TEMP-FAN Control Register (Address 0x25, Value After Power-On or Reset = 0x61)
BIT
NAME DEFAULT
DESCRIPTION
7
R-TEMP4
0
Low Temperature Bit of Remote Sensor
6
R-TEMP3
1
R-TEMP4 R-TEMP3 R-TEMP2 R-TEMP1 R-TEMP0
Low Temp
5
R-TEMP2
1
0
0
0
0
0
0°C
4
R-TEMP1
0
0
0
0
0
1
4°C
3
R-TEMP0
0
0
0
0
1
0
8°C
0
0
0
1
1
12°C
...
...
...
...
...
...
0
1
1
0
0
48°C (Default)
...
...
...
...
...
...
1
1
1
1
0
120°C
1
1
1
1
1
124°C
2
R-SLP2
0
Slope Bits of Remote Sensor
1
R-SLP1
0
Slope
Temp Range in °C
0
R-SLP0
1
R-SLP2
R-SLP1
R-SLP0
LSB/°C
%/°C
(DCY 33.3% to 100%)
0
0
0
32
12.55
5.31
0
0
1
16
6.27
10.62 (default)
0
1
0
8
3.14
21.25
0
1
1
4
1.57
42.5
1
0
0
2
0.78
85
This register specifies the parameters of the Remote Temperature-Fan Control mode.
Low Temperature Bits: [R-TEMP 4:R-TEMP0]
These bits specify the low temperature of the auto remote temperature-fan control. In this control mode, the duty
cycle is equal to the value of the DCY-LOW-TEMP register when the remote temperature is less than or equal to
the value defined by bits [R-TEMP4:R-TEMP0].
Slope Bits: [R-SLP2:R-SLP0]
These bits define the increment of the duty cycle when the remote temperature rises every 1°C in the auto
remote temperature-fan control.
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): AMC6821-Q1
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