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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  
6.14  
Fan Status Register  
Table 6.19 Fan Status Register  
B6 B5 B4 B3  
ADDR  
R/W  
REGISTER  
B7  
B2  
B1  
B0  
DEFAULT  
Fan Status  
Register  
DRIVE  
_FAIL2  
DRIVE  
_FAIL1  
FAN_  
SPIN2  
FAN_  
STALL2  
FAN_  
SPIN1  
FAN_  
STALL1  
27h  
R-C  
WATCH  
-
00h  
The Fan Status Register contains the status bits associated with each fan driver. This register is  
cleared when read if the error condition has been removed.  
Bit 7 - WATCH - This bit is asserted ‘1’ if the host has not programmed the fan driver(s) within four (4)  
seconds after power up.  
Bit 6 - DRIVE_FAIL2 - Indicates that the RPM based Fan Speed Control Algorithm cannot drive Fan  
2 to the desired target setting at maximum drive. This bit can be masked from asserting the ALERT#  
pin.  
„
„
‘0’ - The RPM based Fan Speed Control Algorithm can drive Fan 2 to the desired target setting.  
‘1’ - The RPM based Fan Speed Control Algorithm cannot drive Fan 2 to the desired target setting  
at maximum drive.  
Bit 6 - DRIVE_FAIL1 - Indicates that the RPM based Fan Speed Control Algorithm cannot drive Fan  
1 to the desired target setting at maximum drive. This bit can be masked from asserting the ALERT#  
pin.  
„
„
‘0’ - The RPM based Fan Speed Control Algorithm can drive Fan 1 to the desired target setting.  
‘1’ - The RPM based Fan Speed Control Algorithm cannot drive Fan 1 to the desired target setting  
at maximum drive.  
Bit 3 - FAN_SPIN 2- This bit is asserted ‘1’ if the Spin up Routine for Fan 2 cannot detect a valid  
tachometer reading within its maximum time window. This bit can be masked from asserting the  
ALERT# pin.  
Bit 2 - FAN_STALL 2 - This bit is asserted ‘1’ if the tachometer measurement on Fan 2 detects a stalled  
fan. This bit can be masked from asserting the ALERT# pin.  
Bit 1- FAN_SPIN1- This bit is asserted ‘1’ if the Spin up Routine for Fan 1 cannot detect a valid  
tachometer reading within its maximum time window. This bit can be masked from asserting the  
ALERT# pin.  
Bit 0 - FAN_STALL1 - This bit is asserted ‘1’ if the tachometer measurement on Fan 1 detects a stalled  
fan. This bit can be masked from asserting the ALERT# pin.  
6.15  
Interrupt Enable Register  
Table 6.20 Interrupt Enable Register  
ADDR  
R/W  
REGISTER  
B7  
B6  
B5  
B4  
B3  
B2  
B1  
B0  
DEFAULT  
Interrupt  
Enable  
VOLT4_I  
NT_EN  
EXT4_I  
NT_EN  
EXT3_I  
NT_EN  
EXT2_I  
NT_EN  
EXT1_I  
NT_EN  
INT_IN  
T_EN  
28  
R/W  
-
-
00h  
The Interrupt Enable Register controls the masking for each temperature channel. When a channel is  
masked, it will not cause the ALERT# pin to be asserted when an error condition is detected.  
Bit 5 - VOLT4_INT_EN - Allows the Voltage Input 4 channel to assert the ALERT# pin.  
Revision 1.74 (05-08-08)  
SMSC EMC2104  
DATA6S0HEET