欢迎访问ic37.com |
会员登录 免费注册
发布采购

EMC2302-1-AIZL-TR 参数 Datasheet PDF下载

EMC2302-1-AIZL-TR图片预览
型号: EMC2302-1-AIZL-TR
PDF下载: 下载PDF文件 查看货源
内容描述: 基于RPM的双PWM风扇控制器 [Dual RPM-Based PWM Fan Controller]
分类和应用: 风扇控制器
文件页数/大小: 44 页 / 627 K
品牌: SMSC [ SMSC CORPORATION ]
 浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第27页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第28页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第29页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第30页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第32页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第33页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第34页浏览型号EMC2302-1-AIZL-TR的Datasheet PDF文件第35页  
Dual RPM-Based PWM Fan Controller  
Datasheet  
Table 5.12 Minimum Edges for Fan Rotation  
MINIMUM TACH  
EDGESX[1:0]  
EFFECTIVE TACH  
MULTIPLIER (BASED ON 2  
POLE FANS)  
1
0
EDGES  
NUMBER OF FAN POLES  
0
0
1
1
0
1
0
1
3
5
7
9
1 pole  
0.5  
1
2 poles (default)  
3 poles  
1.5  
2
4 poles  
Bit 2-0 - UPDATEx[2:0] - determines the base time between fan driver updates. The Update Time,  
along with the Fan Step Register, is used to control the ramp rate of the drive response to provide a  
cleaner transition of the actual fan operation as the desired fan speed changes. The Update Time is  
set as shown in Table 5.13.  
Table 5.13 Update Time  
UPDATEX[2:0]  
2
1
0
UPDATE TIME  
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
100ms  
200ms  
300ms  
400ms (default)  
500ms  
800ms  
1200ms  
1600ms  
5.10  
Fan Configuration 2 Registers  
Table 5.14 Fan Configuration 2 Registers  
ADDR  
R/W  
REGISTER  
B7  
B6  
B5  
B4  
B3  
B2  
B1  
B0  
DEFAULT  
Fan 1  
Configuration 2  
EN_  
RRC1  
GLITCH_  
EN1  
33h  
R/W  
-
DER_OPT1 [1:0]  
DER_OPT2 [1:0]  
ERR_RNG1[1:0]  
ERR_RNG2[1:0]  
-
28h  
Fan 2  
Configuration 2  
EN_  
RRC2  
GLITCH_  
EN2  
43h  
R/W  
-
-
28h  
The Fan Configuration 2 register control the tachometer measurement and advanced features of the  
RPM-based Fan Speed Control Algorithm.  
SMSC EMC2302  
Revision 1.1 (10-12-09)  
DATA3S1HEET