User's Manual l TQMa8MxML UM 0103 l © 2022, TQ-Systems GmbH
Page 42
3.2.7
Reset
Reset inputs or outputs are available at the TQMa8MxML LGA pads.
The following block diagram shows the wiring of the reset signals.
i.MX 8M Mini / Nano
LGA
IMX_POR#
V_1V8_SNVS
RESET_IN#
RESET_OUT#
POR#
V_1V8_SNVS
PCA9450
POR#
PMIC_RST#
PMIC_RST#
RTC_RESET#
RTC_RESET#
Figure 21: Block diagram Reset
The following table describes the reset signals available at the TQMa8MxML LGA pads:
Table 36:
Reset signals
Signal
Direction
TQMa8MxML
Power group
Remark
RESET_IN#
I
E7
1.8 V
•
Reset input of i.MX 8M Mini
•
Low-active signal
•
To deactivate: float or PU to 1.8 V
RESET_OUT#
O
F7
Defined externally
•
Reset output of TQMa8MxML
•
Low-active signal
•
Activated by PMIC or RESET_IN#
•
Open Drain, requires PU to 3.3 V on carrier board
PMIC_RST#
I
E6
1.8 V
•
Reset input of PMIC
•
Low-active signal
•
To deactivate: float
