The demand of the fast information exchanging has become the motive of communication revolutions.
In recent years, the increase of data transmission over the internet has led to the demand for high-speed serial-data
communication networks. Considerable design efforts have been focused on low-cost, low-power integrated
transmitters and receivers. Several optical communication standards have been applied to high-speed and longdistance
communications. With the aid of wave-length division multiplexing technique, several optical
communication systems, such as SDH/SONET and 10G-Based Ethernet, allow the information to be exchanged
with different bit rates at the same time in the optical domain. On the other hand, the advancement of the
multimedia environment in personal computer (PC) has brought out lots of business opportunities in the PC
peripherals. PC has changed its identity to be the most popular platform for multimedia. Many commercial
products provide a friendly way for file transferring via either the universal serial bus (USB) or the IEEE 1394
FireWire interface. In this chapter, the basics for wired-line communications would be introduced first. The
details of the DLL-based clock generation technique for the transmitter would be examined. The design issues of
the clock/data recovery technique for the receiver would be explored as well.
