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LEDs
LED #
LED1
LED2
LED3
Hardware Design Overview
Refer to the end of this guide for separate schematic diagrams and bills of material for the upper
DUT board and lower MCU board.
The detachable DUT board can be separated from the provided MCU board for connection to a
user-supplied alternate microprocessor or FPGA board. The inter-board headers are located on
0.1" (2.54 mm) grid for compatibility with generic prototyping boards. All host interface signals
go through the inter-board headers. Several configuration pins including the Remote Terminal
address setting pins are controlled by two DIP switches on the upper DUT board; these signals
are not available on the inter-board headers.
The lower ARM Cortex M3 board is based on the flash-programmable Atmel AT91SAM3U-EK
microprocessor. A 16 bit data/address bus from the ARM connects to the DUT. A USB serial port
provides console I/O (optional). A RESET pushbutton resets the ARM microprocessor, which in
turn controls the DUT Master Reset signal.
The ARM Cortex M3 board includes "J-Link On Board" debug interface, licensed from
www.segger.com, providing out-of-box readiness without having to buy a costly JTAG debug
cable. The kit includes a simple USB cable for connecting the board's debug interface to your
computer.
DESCRIPTION
Software defined LED.
Software defined LED.
Software defined LED.
Holt Integrated Circuits
8
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