5.11. CON12, CON13 (Power In Connector)
CON12 is a DC jack which supplies power to the board. The AC adapter jack type is EIAJ RC-5320A compliant (voltage
5.6 AC Adapter Polarity Mark
CON13 is a connector which supplies power to the board. Signal lines to control the power management IC (PMIC) on/
off are included in this connector.
5.18 CON13 Signals
Pin Number
Signal Name
I/O
Function
1
GND
Power
Power (GND)
2
VIN
Power
Power in terminal, line shared with center pin of CON12
3
GND
Power
Power (GND)
4
PMIC_ONOFF*
In
PMIC ON/OFF control
(2sec or longer GND short to power off, GND short again to power
back on)
[1]
[1]
PMIC_ONOFF* has a 10k製 pull-up from power in VIN
CON12 and CON13 accept a power in voltage range of DC3.1V to 5.25V. Do not
apply a voltage higher than 5.25V as this may damage the internal devices.
As the power lines of CON12 and CON13 are connected they cannot both be used
at the same time. Please be sure to only supply power with one of the connectors.
5.12. CON14 (Expansion Interface 2)
CON14 is an expansion input/output interface. The line signals of the internal controllers in the i.MX257 can be used by
5.19 CON14 Signals
Pin Number
Signal Name
I/O
Function
1
+3.3V_IO
Power
Power (+3.3V_IO)
2
GND
Power
Power (GND)
3
EXT_IO22
In/Out
Expansion I/O 22, connected to GPIO_C pin on i.MX257
4
EXT_IO23
In/Out
Expansion I/O 23, connected to GPIO_D pin on i.MX257
Armadillo-400 Series Hardware Manual
Interface Specifications
29
