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EMC2300 Datasheet(PDF) 24 Page - SMSC Corporation

Part No. EMC2300
Description  Fan Control Device with High Frequency PWM and Temperature Monitors
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Maker  SMSC [SMSC Corporation]
Homepage  http://www.smsc.com
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EMC2300 Datasheet(HTML) 24 Page - SMSC Corporation

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Fan Control Device with High Frequency PWM and Temperature Monitors
Datasheet
Revision 0.2 (06-14-06)
24
SMSC EMC2300
DATASHEET
Figure 6.3 Interrupt Control
Note: The diode fault bits are not mapped directly to the INT# pin. A diode fault condition forces the
diode reading register to a value of 80h, which will generate a Diode Error condition. See
section Diode Fault on page 24.
6.4.1
Diode Fault
The EMC2300 Chip automatically sets the associated diode fault bit to 1 when any of the following
conditions occur on the Remote Diode pins:
The positive and negative terminal are an open circuit.
Positive terminal is connected to VCC
Positive terminal is connected to ground
Negative terminal is connected to VCC
Negative terminal is connected to ground
INT_STS1 Reg
Diode 2 Fault (INT2[7])
Diode 1_En (IER3[2])
Diode 2_En (IER3[3])
Diode 1 Fault (INT2[6])
INT2 (INT1[7])
INT_STS2 Reg
Diode 1 Fault
Diode 2 Fault
Vccp_Error (INT1[1])
Vccp_Error_En (IER1[3])
Vccp_Error
VCC_Error (INT1[2])
VCC_Error_En (IER1[7])
VCC_Error
Diode 1 Limit (INT1[4])
Diode 1_En (IER3[2])
Diode 1 Limit
Diode 2 Limit (INT1[6])
Diode 2_En (IER3[3])
Diode 2 Limit
Ambient Limit
Ambient Limit (INT1[5])
Ambient_En (IER3[1])
TACH1 (INT2[2])
TACH1_En (IER2[1])
TACH1 Out-of-Limit
TACH2 (INT2[3])
TACH2 _En (IER2[2])
TACH2 Out-of-Limit
TACH3 (INT2[4])
TACH3 _En (IER2[3])
TACH3 Out-of-Limit
TACH4 (INT2[5])
TACH4 _En (IER2[4])
TACH4 Out-of-Limit
+
+
+
+
INT#


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