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EMC2104-BP-TR 参数 Datasheet PDF下载

EMC2104-BP-TR图片预览
型号: EMC2104-BP-TR
PDF下载: 下载PDF文件 查看货源
内容描述: [Switching Controller]
分类和应用: 风扇控制器
文件页数/大小: 101 页 / 1474 K
品牌: SMSC [ SMSC CORPORATION ]
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Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown  
Datasheet  
„ The TACH / DRIVE bit in the Look Up Table Configuration Register MUST be set to ‘0’ or  
the TACH Target values will be incorrectly set. Setting this bit to ‘0’ ensures that the settings  
will be RPM settings (Tachometer counts).  
APPLICATION NOTE: It is important that the TACH Target settings are in the proper format when using the RPM  
based Fan Speed Control Algorithm.  
Table 5.3 Fan Controls Active for Operating Mode  
DIRECT SETTING  
MODE  
DIRECT SETTING W/ LUT  
MODE  
FSC MODE  
FSC W/ LUT MODE  
Fan Driver Setting  
(read / write)  
Fan Driver Setting (read  
only)  
Fan Driver Setting (read  
only)  
Fan Driver Setting (read  
only)  
EDGES[1:0]  
EDGES[1:0]  
(Fan Configuration)  
EDGES[1:0]  
EDGES[1:0]  
-
RANGE[1:0]  
(Fan Configuration)  
-
RANGE[1:0]  
(Fan Configuration)  
UPDATE[2:0]  
(Fan Configuration)  
UPDATE[2:0]  
(Fan Configuration)  
UPDATE[2:0]  
(Fan Configuration)  
UPDATE[2:0]  
(Fan Configuration)  
LEVEL  
LEVEL  
(Spin Up Configuration)  
LEVEL  
(Spin Up Configuration)  
LEVEL  
(Spin Up Configuration)  
(Spin Up  
Configuration)  
SPINUP_TIME[1:0]  
(Spin Up  
Configuration)  
SPINUP_TIME[1:0]  
(Spin Up Configuration)  
SPINUP_TIME[1:0]  
(Spin Up Configuration)  
SPINUP_TIME[1:0]  
(Spin Up Configuration)  
Fan Step  
Fan Step  
Fan Step  
Fan Step  
-
Fan Minimum Drive  
Valid TACH Count  
TACH Target (read / write)  
Fan Minimum Drive  
Valid TACH Count  
Valid TACH Count  
-
Valid TACH Count  
-
TACH Target (read  
only)  
TACH Reading  
-
TACH Reading  
-
TACH Reading  
TACH Reading  
Look Up Table Drive /  
Temperature Settings (read  
only)  
Look up Table Drive /  
Temperature Settings  
(read only)  
-
DRIVE_FAIL_CNT[1:0] and  
Drive Band Fail Registers  
-
DRIVE_FAIL_CNT[1:0]  
and Drive Band Fail  
Registers  
5.3  
5.4  
PWM Fan Driver  
The EMC2104 supports two PWM output drivers. These output drivers can be configured  
independently to operate as an open-drain (default) or push-pull driver and can be configured with  
normal or inverse polarity. Additionally, the each PWM driver frequency is programmable with ranges  
from 9.5Hz to 26kHz in four programmable frequency bands.  
Fan Control Look-Up Table  
The EMC2104 uses a look-up table to apply a user-programmable fan control profile based on  
measured temperature to each fan driver. In this look-up table, each temperature channel is allowed  
Revision 1.74 (05-08-08)  
SMSC EMC2104  
DATA2S6HEET