Chapter 2
Hardware Description
2.1 Hardware
The hardware design characteristics are as follows:
1. Show the small-size Ethernet application board using the MCF51CN128 MCU—This
area must be programmable, functional, and completely independent. This area is called
the Minimal System (see
Section 2.4
).
2. Demonstrate the Minimal System capabilities using sensors and external hardware.
This area is called the Demo System (see
Section 2.4
).
3. The Minimal System must be designed in the hardware in such a way that the whole
system can work independent of the Demo System. A set of zero—Resistors are provided
so the Minimal System can be isolated from the Demo System.
4. Provide the user with customizable hardware—If only the Minimal System is required,
layout files from the MCF51CN128 reference design can be edited. Therefore, the
Minimal System can be copied to a new hardware project. Only a power source
connection is required for the Minimal System.
5. To reuse the Minimal System, the same hardware components must be selected.
6. The Demo System must be able to provide all the serial interfaces for testing the VSCI,
IIC, and SPI.
7. The board is able to get power from five sources. See
Section 2.7
.
8. The board is able to provide all serial signals available to the client through an accessible
serial header.
2.2 Minimal System Features
The following is a list of main components in the Minimal system:
TCP/IP Applications Using the MCF51CN Family—Designer Reference Manual, Rev. 0, 12/2009
13
Freescale Semiconductor
