Quick Start Guide for i.MX28 EVK
(continued from previous page)
Reference
Designator
Name
Setting
Description
S16
i.MX28 VDD5V
pin supply
selection
switch
Wall 5V
The i.MX28 VDD5V pin is supplied by the 5V DC wall adapter.
*USB 5V*
The i.MX28 VDD5V pin is supplied by the USB micro AB jack.
S17
JTAG reset
switch
RESET ENABLED
The JTAG tool nSRST (system RESET) signal line is connected to
the i.MX28 PSWITCH pin.
*RESET DISABLED*
The JTAG tool nSRST (system RESET) signal line is disconnected
from the i.MX28 PSWITCH pin.
J94
3.3V and 1.8V
EVK regulator
power source
jumper
BATT
Pins 2–3 are shorted (upper position) and the battery is used to
supply the power.
*VDD5V*
Pins 1–2 are shorted (lower position) and the 5V DC wall adapter
is used to supply the power.
J95
LCD backlight
power source
jumper
Wall 5V
Pins 1–2 are shorted (upper position). The 5V DC wall adapter
supplies power to the LCD backlight.
*VDD4P2*
Pins 2–3 are shorted (lower position). The i.MX28 VDD4P2 output
supplies power to the LCD backlight.
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