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参数资料
| 型号： | EMC2103-1-KP-TR |
| 厂商： | STANDARD MICROSYSTEMS CORP |
| 元件分类： | 模拟信号调理 |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, QCC12 |
| 封装： | 4 X 4 MM, ROHS COMPLIANT, QFN-12 |
| 文件页数： | 54/89页 |
| 文件大小： | 1243K |
| 代理商： | EMC2103-1-KP-TR |
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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Revision 0.90 (08-19-08)
58
SMSC EMC2103
DATASHEET
6.20
Fan Setting Registers
The Fan Setting Register always displays the current setting of the Fan Driver. Reading from the
register will report the current fan speed setting of the fan driver regardless of the operating mode.
Therefore it is possible that reading from this register will not report data that was previously written
into this register.
While the RPM based Fan Speed Control Algorithm or the Look Up Table are active (or both), then
the register is read only. Writing to the register will have no affect and the data will not be stored.
If both the RPM based Fan Control Algorithm and the Look Up Table are disabled, then the register
will be set with the previous value that was used. The register is read / write and writing to this register
will affect the fan speed.
The contents of the register represent the weighting of each bit in determining the final duty cycle. The
output drive for a PWM output is given by Equation [1].
6.21
PWM Divide Register
The PWM Divide Register determines the final frequency of the PWM driver. The driver base frequency
is divided by the value of the PWM Divide Register to determine the final frequency. The duty cycle
settings are not affected by these settings, only the final frequency of the PWM driver. A value of 00h
will be decoded as 01h.
The final PWM frequency is derived as the base frequency divided by the value of this register as
shown in Equation [2].
6.22
Fan Configuration 1 Register
Table 6.28 Fan Driver Setting Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
40h
R/W
Fan Setting
128
64
32
16
8
4
2
1
00h
[1]
Table 6.29 PWM Divide Register
ADDR
R/W
REGISTER
B7B6B5B4
B3B2
B1
B0
DEFAULT
41h
R/W
PWM Divide
128
64
32
16
8
4
2
1
01h
[2]
Table 6.30 Fan Configuration 1 Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
42h
R/W
Fan
Configuration 1
EN_
ALGO
RANGE[1:0]
EDGES[1:0]
UPDATE[2:0]
2Bh
Drive
VALUE
255
---------------------
100%
×
=
f
PWM
PWM base freqeuncy
PWM Divide Setting
---------------------------------------------------------------
=
相关PDF资料 |
PDF描述 |
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| EMC2103-2-AP-TR | |
| EMCL12C2J-35.000MTR | CRYSTAL OSCILLATOR, CLOCK, 35 MHz, LVPECL OUTPUT |
| EMCL12C2J-40.000M | CRYSTAL OSCILLATOR, CLOCK, 40 MHz, LVPECL OUTPUT |
| EMCL12D2H-30.000MTR | CRYSTAL OSCILLATOR, CLOCK, 30 MHz, LVPECL OUTPUT |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EMC2103-2 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Analog and Interface Product Selector Guide |
| EMC2103-2-AP | 制造商:SMSC 制造商全称:SMSC 功能描述:RPM-Based Fan Controller with HW Thermal Shutdown |
| EMC2103-2-AP-TR | 功能描述:板上安装温度传感器 Closed Loop RPM RPM Fan Ctrl 3Remote RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| EMC2103-3-KP | 制造商:SMSC 制造商全称:SMSC 功能描述:RPM-Based Fan Controller with HW Thermal Shutdown |
| EMC2103-4 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Analog and Interface Product Selector Guide |
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