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i.MX6UL/i.MX6ULL SODIMM SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.6.16
Power Input
i.MX6UL/i.MX6ULL SODIMM SOM works with single 3.3V power input (VIN_3V3) from SODIMM Edge connector and
generates all other required powers internally On-SOM itself. i.MX6UL/i.MX6ULL SODIMM SOM uses VRTC_3V0 coin
cell power input from SODIMM Edge connector to
CPU’s RTC controller
for real time clock (when VIN_3V3 is off).
For more details, refer SODIMM Edge connector pins 20, 32, 46, 60, 72, 88, 106, 124, 142, 160, 180 & 192 for 3.3V
power input (VIN_3V3) and pin 183 for VRTC_3V0 on
2.6.17
Reset Signal
i.MX6UL/i.MX6ULL SODIMM SOM supports RSTBTN# for power management on SODIMM Edge connector. RSTBTN#
input from SODIMM Edge conne
ctor is the active low signal which is connected to CPU’s POR pin in
i.MX6UL/i.MX6ULL
SODIMM SOM. This pin can be used to reset the i.MX6UL/i.MX6ULL CPU by connecting push button in the carrier
board.
For more details, refer SODIMM Edge connector pin 187 on
2.6.18
Power Control Signal
i.MX6UL/i.MX6ULL SODIMM SOM supports ONOFF input from SODIMM Edge connector which is the active low signal
and connected to i.MX6 CPU
’s
ONOFF pin. This pin can be used to On/Off the CPU and the entire i.MX6UL/i.MX6ULL
SODIMM SOM by connecting push button in the carrier board.
When the board power is On, a button press between 750ms to 5s will send an interrupt to the core to request
software to bring down the i.MX6UL/i.MX6ULL safely (if software supports). Otherwise, button press greater than 5s
results in a direct hardware power down which is applicable when software is unable to power Off the device. When
the i.MX6UL/i.MX6ULL CPU power supply is Off, a button press greater in duration than 750ms asserts an output signal
to request power from a power IC to power up the i.MX6UL/i.MX6ULL CPU.
For more details, refer SODIMM Edge connector pins 179 on
