参数资料
型号: ADM1026JSTZ
厂商: ON Semiconductor
文件页数: 38/55页
文件大小: 0K
描述: IC CNTRL SYS REF/EEPROM 48LQFP
产品变化通告: MFG CHG Notification ADI to ON Semi
Product Discontinuation 30/Sept/2011
标准包装: 250
功能: 硬件监控器
传感器类型: 内部和外部
感应温度: 0°C ~ 100°C
精确度: ±3°C(最小值)
拓扑: ADC,比较器,多路复用器,寄存器库
输出类型: SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 5.5 V
工作温度: 0°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 托盘
产品目录页面: 1131 (CN2011-ZH PDF)
ADM1026
Table 16. REGISTER 02H, FANS 0 TO 3 FAN DIVISOR REGISTER (POWER-ON DEFAULT 55H)
Bit
1–0
Name
Fan 0 Divisor
R/W
R/W
Description
Sets the oscillator prescaler division ratio for Fan 0 speed measurement. The
division ratios, oscillator frequencies, and typical fan speeds (based on 2 tach
pulses per revolution) are as follows:
Code
00
01
10
11
Divide
By:
1
2
4
8
Oscillator
Frequency (kHz)
22.5
11.25
5.62
2.81
Fan Speed (RPM)
8800, nominal, for count of 153
4400, nominal, for count of 153
2200, nominal, for count of 153
1100, nominal, for count of 153
3–2
5–4
7–6
Fan 1 Divisor
Fan 2 Divisor
Fan 3 Divisor
R/W
R/W
R/W
Same as Fan 0
Same as Fan 0
Same as Fan 0
Table 17. REGISTER 03H, FANS 4 TO 7 FAN DIVISOR REGISTER (POWER-ON DEFAULT 55H)
Bit
1–0
Name
Fan 4 Divisor
R/W
R/W
Description
Sets the oscillator prescaler division ratio for Fan 4 speed measurement. The
division ratios, oscillator frequencies, and typical fan speeds (based on 2 tach
pulses p er revolution) are as follows:
Code
00
01
10
11
Divide By:
1
2
4
8
Oscillator
Frequency (kHz)
22.5
11.25
5.62
2.81
Fan Speed (RPM)
8800, nominal, for count of 153
4400, nominal, for count of 153
2200, nominal, for count of 153
1100, nominal, for count of 153
3–2
5–4
7–6
Fan 5 Divisor
Fan 6 Divisor
Fan 7 Divisor
R/W
R/W
R/W
Same as Fan 4
Same as Fan 4
Same as Fan 4
Table 18. REGISTER 04H, DAC CONFIGURATION REGISTER (POWER-ON DEFAULT FFH)
Bit
7–0
Name
DAC Control
R/W
R/W
Description
This register contains the value to which the fan speed DAC is programmed in
normal mode, or the 4 MSBs contain the minimum fan speed in auto fan speed
control mode.
Table 19. REGISTER 05H, PWM CONTROL REGISTER (POWER-ON DEFAULT FFH)
Bit
7–4
3–0
Name
PWM Control
Unused
R/W
R/W
R
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
Table 20. REGISTER 06H, EEPROM REGISTER 1 (POWER-ON DEFAULT 00H)
Bit
7–0
Name
Factory Use
R/W
R/W
Description
For factory use only. Do not write to this register.
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