EMC2103 datasheet(52/85 Pages) MICROCHIP

52 / 85 page

RPM-Based Fan Controller with Hardware Thermal Shutdown

Datasheet

DS0005250A-page 52

 2013 Microchip Technology Inc.

The Configuration 2 Register is software locked.

6.12

Interrupt Status Register

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 7 - EEPROM (EMC2103-4 only) - This bit is set to ‘1’ if the EEPROM loader circuitry detects an

error when writing data from the EEPROM. This bit is cleared when the register is read. This bit is not

masked except via the MASK bit.

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 and EMC2103-4 only) - This bit is set to ‘1’ if any bit in the GPIO Status

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.

Table 6.18 Conversion Rate

CONV[1:0]

CONVERSION RATE

1 / sec

2 / sec

4 / sec (default)

Continuous

Table 6.19 Interrupt Status Register

ADDR

R/W

DEFAULT

23h

R-C

Interrupt

Status

EEP

ROM

TCRIT

GPIO

FAN

HIGH

LOW

FAULT

00h

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