Phase adjustable multi-channel clock signal synthesizing device

Abstract

The invention discloses a phase adjustable multi-channel clock signal synthesizing device. The phase adjustable multi-channel clock signal synthesizing device comprises a controller, a reference clock generating module, a clock fanout module and N groups of level generation modules and clock phase adjustment modules. A reference clock signal generated by the reference clock signal generation module according to a frequency control signal sent by the controller is shunted through the clock fanout module to obtain N channels of reference clock signals, the N channels of reference clock signals are sent to the clock phase adjustment modules, the controller calculates the amplitude of a direct current signal to be generated by the corresponding level generation module according to the phase difference between the N channels of reference clock signals to be generated and the reference clock signal, level control signals are sent to the level generation modules, every level generation module generates two direct current level signals and sends the two direct current level signals to the clock phase adjustment modules, and the clock phase adjustment modules processes the reference clock signal according to the direct current level signals to generate the final clock signal. The phase adjustable multi-channel clock signal synthesizing device can achieve accurate clock signal phase adjustment during the generation of multi-channel clock signals.

Description

technical field [0001] The invention belongs to the technical field of clock signal synthesis, and more specifically relates to a multi-channel clock signal synthesis device with adjustable phase. Background technique [0002] The clock signal is the basic signal of the electronic system, which is widely used in various digital circuit systems, and is used as a timing basis to synchronize the operation of other unit circuits. The performance of the clock signal directly affects the performance index of the electronic system. [0003] The performance requirements of electronic systems for clock signals are not only reflected in stable frequency, amplitude, and excellent phase noise. In some special applications, multiple clock signals are required to work at the same time. On the one hand, these clock signals are required to be coherent, and on the other hand, the phases of these clock signals are required to be precisely controlled. [0004] Coherence can be achieved by us...

AI Technical Summary

Problems solved by technology

Phase adjustment can also be achieved by using a digital delay line, but the range of clock adjustment is narrow

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