CM-IMX53 Datasheet, PDF (22/31 Pages) List of Unclassifed Manufacturers – Smart Mobile Devices

Hardware User Manual - CM-i.MX53
5 Application Information/Guidelines
Last change: 10 April 2013
Version 2.3
5.1 Supply Voltage Decoupling
For better stability we recommend to add a 100nF capacitor to each power supply pin and an additional
47µF tantalum capacitor to the VIN voltage rail next to the module.
5.2 Power Outputs
For better stability we recommend to add a 100nF capacitor to each used power output pin and an
additional 2.2µF tantalum capacitor to each voltage rail next to the module.
5.3 Peripheral Supply
NOTE:
EN_PERI (Pin 255) indicates when the base board is permitted to power its peripherals. Do not
power your peripherals until this signal line is high, otherwise the Core Module can be seriously
damaged! When EN_PERI is active high the Core Module has powered up properly and all of the
required power lines are available.
5.4 Reset circuit
There are two Reset Inputs for the CM-i.MX53, which have different reset strength. The first one is
CTRL.nPOR which will reset the entire i.MX53 as during a power up. Only this Reset mode lets the i.MX53
detect a changed boot mode. The second one, CTRL.nRESET_IN, is a soft reset which only resets the
i.MX53 CPU (ARM core).
5.5 Differential pairs
All signals/pins named *_N/*_P (for example: LVDS1.CLK_N and LVDS1.CLK_P) are differential pairs which
should be routed with a differential impedance of 100Ω for LVDS and SATA or 90Ω for USB for a good signal
integrity and to prevent EMI problems.
5.6 Signals
All signals which are not differential pairs should be routed with a single ended impedance of 50Ohm to
minimize EMI.
5.7 Application Example Schematics
Have a look at our DEV-i.MX5x schematics, which can be found at http://www.bluetechnix.com/goto/dev-
i.mx53kit to get application examples.
© Bluetechnix 2013
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