Copyright
©
2013
congatec
AG
QMX6m03
58/63
9.19
Thermal Management
Table 24 Thermal Management Signal Descriptions
Signal
Pin # Description
I/O
PU/PD Comment
THRM#
69
Thermal Alarm active low signal generated by the external hardware to indicate an
over temperature situation. This signal can be used to initiate thermal throttling.
I 3.3V
PU 10k
3.3V
Connected to GPIO
THRMTRIP#
71
Thermal Trip indicates an overheating condition of the processor. If
'THRMTRIP#'
goes active the system immediately transitions to the S5 State (Soft Off).
O 3.3V
Connected to GPIO
9.20
Fan Control
Table 25 Fan Control Signal Descriptions
Signal
Pin # Description
I/O
PU/PD Comment
FAN_PWMOUT
/GP_PWM_OUT1
196
Primary functionality is fan speed control. Uses the Pulse Width Modulation (PWM)
technique to control the Fan’s RPM based on the CPU’s die temperature. When not in use
for this primary purpose it can be used as General Purpose PWM Output.
O 3.3V
OC
FAN_TACHOIN
/GP_TIMER_IN
195
Primary functionality is fan tachometer input. When not in use for this primary purpose it can
be used as General Purpose Timer Input.
I 3.3V
Connected to GPIO