EMC6D100 Datasheet, PDF (64/75 Pages) SMSC Corporation – ENVIRONMENTAL MONITORING AND CONTROL DEVICE WITH AUTOMATIC FAN CAPABILITY

Bit[2]
Environmental Monitoring and Control Device
Datasheet
Reserved
Bit[3]
TRDY: Temperature Reading Ready. This bit indicates that the temperature reading registers have valid
values. This bit is used after writing the start bit to ‘1’. 0= not valid, 1=valid.
Bit[4]
SUREN: Spin-up reduction enable. This bit enables the reduction of the spin-up time based on feedback
from all fan tachometers associated with each PWM. 0=disable, 1=enable (default)
Bit[6]
Fan_tach test mode
Bit[7]
Initialization.
8.32 Register 80h: Fan Temp Interrupt Enable Register
REGISTER READ/
ADDRESS WRITE
80h
R/W
REGISTER
NAME
Fan Temp
Interrupt
Enable
BIT 7
BIT 6
(MSB)
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 _DEFAULT
(LSB) VALUE
RES AMB TEMP FAN4 FAN3 FAN2 FAN1 FAN
5Eh
These registers become read only when the Lock bit is set. Any further attempts to write to these registers
shall have no effect.
This register is used to enable the fan events and the ambient temperature to set the corresponding status
bits in the interrupt status registers. It also contains the FAN enable bit to enable fan events to the INT#
pin and the TEMP enable bit that enables temperature events to the INT# pin.
This register contains the following bits:
Bit[0]
Fan Interrupt Enable
Bit[1]
Fan 1 Event Enable
Bit[2]
Fan 2 Event Enable
Bit[3]
Fan 3 Event Enable
SMSC EMC6D100/EMC6D101
Page 64
DATASHEET
Rev. 09-09-04