32-bit systems based on multimedia car navigation system

4. Based on a 32-bit system design requirements for automotive multimedia navigation system

In today's automotive products, we use 32-bit CPU design, the difficulties faced by several very specific requirements:

4.1. Low standby power requirements

The best system design is not in the standby power consumption, however, continued emphasis in this age of human engineering required, each system also needs to be able to respond quickly, so often need to design a standby state, in this state, to maintain some the most basic and simple features, car audio, such as real-time clock to maintain the operation of the vehicle status monitoring and so on.

Board systems are powered by batteries, especially in the standby mode, in order to ensure the reliability of immediate response vehicle, vehicle equipment in standby, the industry standard requirements of its actual current consumption is very low.

4.2. Based on embedded operating system's rapid response to problems

32-bit CPU using the vehicle navigation system which, without exception, we need an operating system (OS) only support work, but any one of the current operating system products for the car, it is a monster, its internal complexity and long the processing, resulting in system response time requirements of application environments with a relatively large gap.

If you solve this problem of rapid response of embedded systems is a problem as well as the basic requirements of a car project.

4.3. Different format display and touch panel

LCD display driver in accordance with their differe