7
Enabling Multimedia Applications in 2.5G and 3G Wireless Terminals: Challenges and Solutions
7.1. Introduction
7.1.1. “DSPs take the RISC”
From the mid-1980s to the mid-1990s, we were in the “Personal Computer” era and CISC microprocessors fuelled the semiconductor market growth (Figure 7.1). We are now in a new era where people demand high personalized bandwidth, multimedia entertainment and information, anywhere, anytime: Digital Signal Processing (DSP) is the driver of the new era (Figure 7.2). There are many ways to implement DSP solutions; no matter what, the world surrounding us is analog; analog technology is therefore key. In this chapter, we will explore the different ways to implement DSP solutions and present the case of the dual core DSP + RISC, which will introduce the innovative OMAP™ hardware and software platform by Texas Instruments.
Whether it is a matter of cordless telephones or modems, hard disk controllers or TV decoders, applications integrating signal processing need to be as compact as possible. The tendency is of course to put more and more functions on a single chip. But in order to be really efficient, the combination of several processors in silicon demands that certain principles be respected.
In order to respond to the requirements of real-time DSP in an application, the implementation ...
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