emc2103-3-kp-tr Standard Microsystems Corp., emc2103-3-kp-tr Datasheet - Page 52

• Manufacturer Part Number: emc2103-3-kp-tr
• Description: Emc2103 Rpm-based Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

Revision 0.88 (06-30-08)
ADDR
6.15
6.16
ADDR
28
29
R/W
R/W
R/W
R/W
Bit 1- FAN_SPIN - This bit is asserted ‘1’ if the Spin up Routine for the Fan cannot detect a valid
tachometer reading within its maximum time window. This bit can be masked from asserting the ALERT
pin.
Bit 0 - FAN_STALL - This bit is asserted ‘1’ if the tachometer measurement on the Fan detects a stalled
fan. This bit can be masked from asserting the ALERT pin.
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 3 - EXT3_INT_EN (EMC2103-2 only) - Allows the External Diode 3 to assert the ALERT pin.
Bit 2 - EXT2_INT_EN (EMC2103-2 only) - Allows the External Diode 2 to assert the ALERT pin.
Bit 1 - EXT1_INT_EN - Allows the External Diode 1 to assert the ALERT pin.
Bit 0 - INT_INT_EN - Allows the Internal Diode to assert the ALERT pin.
Interrupt Enable Register
Fan Interrupt Enable Register
‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with External
Diode 3 channel.
‘1’ - The ALERT pin will be asserted for an error condition associated with External Diode 3
channel.
‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with External
Diode 2 channel.
‘1’ - The ALERT pin will be asserted for an error condition associated with External Diode 2
channel.
‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with External
Diode 1 channel.
‘1’ - The ALERT pin will be asserted for an error condition associated with External Diode 1
channel.
‘0’ (default) - The ALERT pin will not be asserted for any error condition associated with the Internal
Diode.
‘1’ - The ALERT pin will be asserted for an error condition associated with the Internal Diode.
REGISTER
Interrupt
REGISTER
Enable
Interrupt
Enable
Fan
B7
-
Table 6.23 Fan Interrupt Enable Register
B7
-
Table 6.22 Interrupt Enable Register
B6
-
B6
-
B5
-
DATASHEET
B5
-
B4
-
52
B4
EXT3_I
NT_EN
-
B3
RPM-Based Fan Controller with HW Thermal Shutdown
B3
-
EXT2_I
NT_EN
B2
B2
-
INT_EN
SPIN_
EXT1_I
NT_EN
B1
B1
STALL_
INT_EN
INT_IN
T_EN
B0
B0
SMSC EMC2103
DEFAULT
DEFAULT
Datasheet
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