Critical Link, LLC
www.CriticalLink.com
MityARM-335x Development Kit
www.MityDSP.com
12 April 2013
7
Copyright © 2007-2013, Critical Link LLC
Expansion Port Interface Description
This 41-pin port can be used for a multitude of expansion functions. Both SPI and I2C
connections are available as well as 16 Address/Data pins with control logic. Both 1.8V
from the MityARM-335x module and 3.3V power supply connections are available on
the connector.
In addition to custom user interfacing Critical Link provides off-the-shelf add-on
modules for this port that include an 802.11 b/g/n with Bluetooth module.
Boot Configuration Header Description
The 335x Development Kit features a 12 bit, [0] to [11] series of boot configuration
jumpers, based off the LCD_DATA pins, to determine the search order of peripherals for
a valid boot image.
By default the MityARM-335x Development Kits is required to boot initially from the
MMC/SD card. Note that there are a total of 16 bits for the boot configuration with pins
[12] to [15] already pulled high/low on the MityARM-335x module.
TI JTAG Interface Description
The 14-pin JTAG header J101 is available onboard for debugging of the MityARM
AM335x module with a TI Emulator.
