Realtek Semiconductor Inc.

Kuo-Lin Tai

Yi-Shu Chang

Chi-Kung Kuan

Ming-Chun Chang

Wen-Shiung Weng

Sheng-Kai Chen

Johnson Yang

A device and a method for setting an initial value of a control chip. The device includes a setting unit, which is disposed outside the control chip and provides a setting signal, and a decoder, which is disposed inside the control chip, receives the setting signal, and generates a selecting signal according to the setting signal. The control chip obtains the initial value according to the selecting signal.

Device and method for setting an initial value

A signal generator for generating a clock with lower jitter. The signal generator includes a multi-phase clock generator for generating a plurality of multi-phase reference clocks with same frequency, a multiplexer for selecting one reference clock as an output clock according to a phase selecting signal, a phase-swallow control unit having a comparator for comparing a swallow value with a reference value out of order and outputting the comparing result as a swallow control signal, and a clock selector for receiving the swallow control signal and generating the phase selecting signal. Because the reference value is provided by a counter in bit-reversed, the swallow control signal is dispersed smoothly and the jitter of the output clock is reduced.

Phase swallow device and signal generator using the same

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Chupei, Taiwan

Kuo-Lin Tai