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EMC2101-ACZT-TR 参数 Datasheet PDF下载

EMC2101-ACZT-TR图片预览
型号: EMC2101-ACZT-TR
PDF下载: 下载PDF文件 查看货源
内容描述: SMBus的风扇控制为1° C的精密温度监控 [SMBus Fan Control with 1∑C Accurate Temperature Monitoring]
分类和应用: 风扇传感器换能器温度传感器输出元件监控
文件页数/大小: 55 页 / 1171 K
品牌: SMSC [ SMSC CORPORATION ]
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SMBus Fan Control with 1°C Accurate Temperature Monitoring  
Datasheet  
6.3  
Temperature Data Registers  
Table 6.2 Temperature Data Registers  
B7 B6 B5 B4 B3  
Sign 64 32 16  
ADDR.  
R/W  
REGISTER  
B2  
B1  
B0  
DEFAULT  
Internal  
Temperature  
00h  
01h  
R
8
4
2
1
00h  
External Diode  
Temperature  
High Byte  
R
R
Sign  
0.5  
64  
32  
16  
-
8
-
4
-
2
-
1
-
00h  
00h  
External Diode  
Temperature  
Low Byte  
10h  
0.25  
0.125  
As shown in Table 6.2, the internal temperature monitor is stored as an 8-bit value while the external  
temperature is stored as an 11-bit value.  
Please note that the internal temperature monitor is limited to the operating temperature limits of the  
part resulting in a guaranteed range of 0ºC to 85ºC.  
6.4  
Status Register  
Table 6.3 Status Register  
ADDR  
R/W  
REGISTER  
B7  
B6  
B5  
B4  
B3  
B2  
B1  
B0  
DEFAULT  
INT_  
HIGH  
EXT_  
HIGH  
EXT_  
LOW  
02h  
R
Status  
BUSY  
EEPROM  
FAULT  
TCRIT  
TACH  
00h  
The Status Register is a read only register and returns the operational status of the part. \  
If the ALERT / TACH pin is configured as an ALERT output and any of these bits are set to '1' (except  
the BUSY bit and the FAULT bit), then the ALERT / TACH pin is asserted low (if interrupts are not  
masked (see Section 6.5).  
Reading from the Status Register will cause the MASK bit to be set if any bit (other than BUSY and  
FAULT) have been set. Each bit is automatically cleared when the error condition has been removed,  
however the internal error condition flags may still be set. The ARA command must be used to clear  
the ALERT / TACH pin if there are no bits set in the Status Register. In addition, reading from the  
Status Register will clear all bits. If the error condition persists, then the bits will be reset at the end of  
the next conversion.  
When the device is configured in Comparison Mode (see Section 6.23), reading the Status Register  
will not clear any active status bits (except EEPROM and FAULT). These bits are automatically cleared  
when the error condition is removed.  
Bit 7 - Busy - indicates that the ADC is converting - does not trigger an interrupt.  
Bit 6 - INT_HIGH - Internal temperature has met or exceeded the high limit.  
Bit 5 - EEPROM - Indicates that the EEPROM could not be found when the device powers up in the  
Auto-Program Mode (see Section 5.1). This bit only applies to the EMC2102-R. It will always read ‘0’  
for the EMC2101 device.  
Bit 4 - EXT_HIGH - External Diode temperature has exceeded the high limit.  
Revision 2.53 (03-13-07)  
SMSC EMC2101  
DATA3S2HEET