USB 2.0 port sharing for high-functionality smartphones

Mobile devices need many processing integrated circuits (IC) to handle the diverse functionality demands of their users. A typical smartphone has a communication processor, an application processor and a power management IC, all needing to share a single USB port and to communicate at high speed USB data rates of 480 Mbps.

This paper, which originally appeared at EE Times Europe (Analog) , compares and contrasts different solutions that can be applied to this problem, ranging from a USB hub to a simple analog switch.

To read the article, click here.

About the author
Oscar Freitas is a Member of Technical Staff for Fairchild Semiconductor’s USB Products Group, Signal Path Division.

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