參數(shù)資料
型號(hào)： ADM1026
廠商： Analog Devices, Inc.
英文描述： Complete Thermal and System Management Controller
中文描述： 完整的熱和系統(tǒng)管理控制器
文件頁(yè)數(shù)： 40/56頁(yè)
文件大小： 634K
代理商： ADM1026
ADM1026
Rev. A | Page 40 of 56
Table 18. Register 05h, PWM Control Register (Power-On Default FFh)
Bit
Name
7–4
PWM Control
R/W
R/W
Description
This register contains the value to which the PWM fan speed is programmed in normal
mode, or the 4 MSBs contain the minimum fan speed in auto fan speed control mode.
0000 = 0% Duty Cycle
0001 = 7% Duty Cycle
0101 = 33% Duty Cycle
0110 = 40% Duty Cycle
0111 = 47% Duty Cycle
1110 = 93% Duty Cycle
1111 = 100% Duty Cycle
Undefined
3–0
Unused
R
Table 19. Register 06h, EEPROM Register 1 (Power-On Default 00h)
Bit
Name
7–0
Factory Use
R/W
R/W
Description
For factory use only. Do not write to this register.
Table 20. Register 07h, Configuration Register 3 (Power-On Default 00h)
Bit
Name
0
Enable GPIO16/ THERM = 0
1
CI Clear = 0
2
V
REF
Select = 0
5–3
Unused
6
GPIO16 Direction
7
GPIO16 Polarity
R/W
R/W
R/W
R/W
R
R/W
R/W
Description
When this bit is 1, Pin 42 is enabled as a general-purpose I/O pin (GPIO16); otherwise it
is the THERM output.
Writing a 1 to this bit clears the CI latch. This bit is cleared by writing a 0 to it.
When this bit is 0, V
REF
(Pin 24) outputs 1.82 V, otherwise, it outputs 2.5 V.
Undefined, reads back 0.
When this bit is 0, GPIO16 is configured as an input; otherwise, it is an output.
When this bit is 0, GPIO16 is active low; otherwise, it is active high.
Table 21. Register 08h, GPIO Configuration Register 1 (Power-On Default 00h)
Bit
Name
R/W
0
GPIO0 Direction
R/W
1
GPIO0 Polarity
R/W
2
GPIO1 Direction
R/W
3
GPIO1 Polarity
R/W
4
GPIO2 Direction
R/W
5
GPIO2 Polarity
R/W
6
GPIO3 Direction
R/W
7
GPIO3 Polarity
R/W
Description
When this bit is 0,
GPIO0 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO0 is active low; otherwise it is active high.
When this bit is 0,
GPIO1 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO1 is active low; otherwise it is active high.
When this bit is 0,
GPIO2 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO2 is active low; otherwise, it is active high.
When this bit is 0,
GPIO3 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO3 is active low; otherwise, it is active high.
Table 22. Register 09h, GPIO Configuration Register 2 (Power-On Default 00h)
Bit
Name
R/W
0
GPIO4 Direction
R/W
1
GPIO4 Polarity
R/W
2
GPIO5 Direction
R/W
3
GPIO5 Polarity
R/W
4
GPIO6 Direction
R/W
5
GPIO6 Polarity
R/W
6
GPIO7 Direction
R/W
7
GPIO7 Polarity
R/W
Description
When this bit is 0,
GPIO4 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO4 is active low; otherwise, it is active high.
When this bit is 0,
GPIO5 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO5 is active low; otherwise, it is active high.
When this bit is 0,
GPIO6 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO6 is active low; otherwise, it is active high.
When this bit is 0,
GPIO7 is configured as an input; otherwise, it is an output.
When this bit is 0,
GPIO7 is active low; otherwise, it is active high.
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