CHAPTER 4

Network Physical Layer Technologies

The best place to start is at the beginning. And nothing better than starting with the hardware, the underlying infrastructure of all networking. Knowledge of hardware topics is relevant to all embedded designers, even to those not directly involved in hardware design, or where their work is apparently ‘software only’. Understanding how the hardware ticks will give any designer a major advantage at the low-level design stages. Even if the reader is not an expert or has little knowledge of hardware issues, the information given here may be of some use to them.

This chapter covers the basic technologies involved in local networking, and how they relate to embedded systems. In other words, this is a ...

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