欢迎访问ic37.com |
会员登录 免费注册
发布采购

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 ]
 浏览型号EMC2104-BP-TR的Datasheet PDF文件第64页浏览型号EMC2104-BP-TR的Datasheet PDF文件第65页浏览型号EMC2104-BP-TR的Datasheet PDF文件第66页浏览型号EMC2104-BP-TR的Datasheet PDF文件第67页浏览型号EMC2104-BP-TR的Datasheet PDF文件第69页浏览型号EMC2104-BP-TR的Datasheet PDF文件第70页浏览型号EMC2104-BP-TR的Datasheet PDF文件第71页浏览型号EMC2104-BP-TR的Datasheet PDF文件第72页  
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown  
Datasheet  
Bit 2 - 1 - ERR_RNGx[1:0] - Control some of the advanced options that affect the error window. When  
the measured fan speed is within the programmed error window around the target speed, then the fan  
drive setting is not updated. The algorithm will continue to monitor the fan speed and calculate  
necessary drive setting changes based on the error, however these changes are ignored.  
Table 6.34 Error Range Options  
ERR_RNGX[1:0]  
1
0
OPERATION  
0
0
1
1
0
1
0
1
0 RPM (default)  
50 RPM  
100 RPM  
200 RPM  
Bit 0 - LOWDRIVEx - Determines whether the tachometer measurement circuit will use the Tach Period  
Measurement method of fan speed measurement or the Tach Pulse Count Method of fan speed  
measurement. Setting this bit allows the use of low side fan drive circuits as shown in Figure 6.1  
without requiring additional tachometer recovery circuitry.  
„
‘0’ (default) - The tachometer signal must always be present when measuring the fan speed  
regardless of the measurement method.  
„
‘1’ - Low side PWM drive circuits are supported and the tachometer signal does not need to be  
present at all times (which is common with such drive techniques). The tachometer measurement  
circuitry will use the Tach Pulse Count Method to determine the fan speed (contact SMSC for  
details on this operation). All tachometer related data is in the form of edge counts over a fixed  
time period. This method is significantly slower and the tachometer updates are non-continuous.  
PWM Input  
Figure 6.1 LOWDRIVE Supported Drive Circuit  
Revision 1.74 (05-08-08)  
SMSC EMC2104  
DATA6S8HEET