emc2103-3-kp-tr Standard Microsystems Corp., emc2103-3-kp-tr Datasheet - Page 50

• 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)
6.12
ADDR
23h
1
0
0
1
1
R/W
R-C
CONV[1:0]
The Configuration 2 Register is software locked.
The Interrupt Status Register reports the operating condition of the EMC2103. If any of the bits are set
to a logic ‘1’ (other than HWS) then the ALERT pin will be asserted low if the corresponding channel
is enabled. Reading from the status register clears all status bits if the error conditions is removed. If
there are no set status bits, then the ALERT pin will be released.
The bits that cause the ALERT pin to be asserted can be masked based on the channel they are
associated with unless stated otherwise.
Bit 5 - TCRIT - This bit is set to ‘1’ if any bit in the Tcrit Status Register is set. This bit is automatically
cleared when the Tcrit Status Register is read and the bits are cleared.
Bit 4 - GPIO (EMC2103-2 only) - This bit is set to ‘1’ if any bit in the GPIO Status Register is set. This
bit is automatically cleared when the GPIO Status Register is read.
Bit 3 - FAN - This bit is set to ‘1’ if any bit in the Fan Status Register is set. This bit is automatically
cleared when the Fan Status Register is read and the bits are cleared.
Bit 2 - HIGH - This bit is set to ‘1’ if any bit in the High Status Register is set. This bit is automatically
cleared when the High Status Register is read and the bits are cleared.
Bit 1- LOW - This bit is set to ‘1’ if any bit in the Low Status Register is set. This bit is automatically
cleared when the Low Status Register is read and the bits are cleared.
Bit 0 - FAULT - This bit is set to ‘1’ if any bit in the Diode Fault Register is set. This bit is automatically
cleared when the Diode Fault Register is read and the bits are cleared.
Interrupt Status Register
REGISTER
Interrupt
Register
Status
0
0
1
0
1
B7
-
Table 6.19 Interrupt Status Register
B6
Table 6.18 Conversion Rate
TCRIT
DATASHEET
B5
50
GPIO
B4
CONVERSION RATE
RPM-Based Fan Controller with HW Thermal Shutdown
FAN
B3
4 / sec (default)
Continuous
1 / sec
2 / sec
HIGH
B2
LOW
B1
FAULT
B0
SMSC EMC2103
DEFAULT
Datasheet
00h