Feature Integration Technology Inc.
Fintek
F75373
5.4.4 FAN_Fault#
Fan_Fault will be aserted when the fan speed doesn’t meet the expected fan speed within a programmable period(default is 3
minutes) . There are two conditions may cause the FAN_FAULT#.
(1). When PWM_Duty reaches FFh, the fan speed count can’t reach the fan expected count in time. (Figure 5-12)
(2). When PWM_Duty reaches 00h, if the fan speed count can’t reach the fan expected count in time.(Figure 5-13)
3 min(default)
Current Fan Count
Expected Fan Count
100%
Duty-cycle
Fan_Fault#
Figure 5-12
3 min(default)
Expected Fan Count
Current Fan Count
Duty-cycle
0%
Fan_Fault#
Figure 5-13
5.5 SMI#
5.5.1 Temperature
SMI# interrupt for temperature is shown as figure 5-13. Temperature exceeding high limit or going below hystersis will
cause an interrupt if the previous interrupt has been reset by writing “1” all the interrupt Status Register.
11
V0.25P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
