Abstract:
Each electronic system demands a solution that is efficient in area and power. This research proposes design of a hardware system for data processing application especially for applications that require low power. The system comprises of an embedded processor and different interfaces for text, audio and image processing. Transceiver interface provides compatibility of hardware with RS232 devices. The designed hardware integrates a FIFO buffered CODEC interface. The interface is designed to support 8-bit, mono audio input and output at a sampling frequency of 8 KHz. For short distance communication IR interface is provided. For storage of code and data, hardware incorporates memory interface. The analog to digital converter on the proposed hardware is a 10-bit, 8-channel converter. It performs conversions for the touch screen interface, on –board voltage monitoring and an external analog input. For handling IO, there is provision of keyboard and on board LCD. Simulation of interfaces has been done in Mixed Signal Circuit Simulator. Selection of processor as well as components has been based on power requirements along with other issues. Power consumption has been further reduced by employing techniques like auto shut down etc. Power consumption of different blocks in operating state varies from 178.2 uw to 50mw Finally, a6.8 X 4.5 inches multi-layer PCB comprising of 4 layers has been simulated and designed. The proposed hardware system is capable of handling text, audio and image data although it can also be used for other types of multimedia with slight modifications.
Page(s):
6-9
DOI:
DOI not available
Published:
Journal: New Horizons: Journal of the Institution of Electrical & Electronics Engineers Pakistan, Volume: 50, Issue: 0, Year: 2005