Critical Link, LLC
www.CriticalLink.com
MityARM-335x Development Kit
www.MityDSP.com
12 April 2013
6
Copyright © 2007-2013, Critical Link LLC
LCD with Touch Interface Description
The MityARM-335x Development Kit provides a flat-ribbon cable low profile Digital
Video Interface (DVI)
.
In addition to custom user interfacing, the signals may be used to
interface to either a XGA (1024x768) or VGA (640x480) LCD screen using the
MityARM hardware and software development kit LCD interface libraries and an
appropriate daughterboard interface. Off-the-shelf display solutions for XGA or VGA
interfaces are provided by Critical Link.
Combining five of the interface pins with P400, P401 and P402 jumper settings allow for
SPI or up to 5-channel Analog based touch screen controls.
Note:
ADC Channels 1 through 5 are shared with the Analog to Digital Converter
interface connections and are enabled or disabled depending on P402 and P401 jumpers.
The interface can also be customized to support 20 GPIO lines at +3.3V CMOS/LVTTL
signaling levels based on the AM335x configuration.
HDMI (Video Only) Interface Description
The MityARM-335x Development Kit provides a standard HDMI interface for external
monitor connection. With a maximum resolution of 2048 x 2048 the MityARM-335x
development kit can drive the display you need.
8-Channel Analog to Digital Converter Description
The on-board 8-channel analog to digital converter (ADC) accepts 0 to 10V input levels
through the 10-pin header, J900.
Note:
Channels 1 through 5 are shared with the LCD analog touch interface connections
and are enabled or disabled depending on P402 and P401 jumpers.
Dual CAN Interface Description
The on-board CAN provides a set of CAN V2.0B compliant interfaces. These interfaces
are managed by the MityARM-335x module directly.
The galvanic isolation is provided by a dedicated TI ISO1050 transceiver for each
interface. The ISO1050 is powered by an isolated power supply with 1000V* isolation
from the primary supply.
Jumpers JP500 (CAN 1) and JP501 (CAN 0) can provide dedicated bus termination of
120Ohm. To enable termination, place shorting jumper across JP504.
The electrical interfaces are provided via J503 and J504, 10-pin shrouded headers.
Linux Driver and API examples are available to support CAN functionality.
