A “short list” of embedded systems

CS269: HW/SW Engineering of Embedded Systems, Winter02

Different Architectures

compute

air flow

compute

injection

time

drive

actuators

air

flow

injection

time

air temperature

engine temperature

engine speed

throttle position

look-up table

PWM signals

air pressure

8 bit CPU

DSP

Actuations (PWM)

Digital inputs

FPGA

A/D

Analog

inputs


	And have the initial data processing done by this digital signal processor. We can then choose an even smaller CPU, since it is now only used to compute injection time. The actuation is still relegate to the FPGA for timing constraint satisfaction.