Phase interpolation device and phase interpolation method

Abstract

The present invention relates to a phase interpolation device, comprising: a first signal generating circuit, used to generate a first signal with a first phase; a third signal generating circuit, used to generate a third signal with a second phase; fourth / third A five-signal generating circuit that generates a fourth signal with a third phase in the first mode, and generates a fifth signal with the second phase without generating the fourth signal in the second mode; and a phase interpolator, In the first mode, the fourth signal is not used to generate an interpolation signal, while in the second mode, the first signal, the third signal and the fifth signal are used to generate the interpolation signal.

Description

technical field [0001] The present invention relates to a phase interpolation device and a phase interpolation method, in particular to a phase interpolation device and a phase interpolation method which can predict the interpolation action and switch the phase to be used for interpolation in advance. Background technique [0002] Phase interpolation devices are widely used in modern electronic devices. Because the phase interpolation device can use a small number of clock signals to interpolate multiple clock signals with different phases. figure 1 A block diagram of a known phase interpolation device 100 is shown. like figure 1 As shown, the phase interpolation device 100 in the prior art includes a phase interpolator 101 and multiplexers 103 and 105 . The multiplexer 103 is used to receive signals with different even phases (P 0 ,P 2 ,P 4 ,P 6 ) clock signal CLK 0 、CLK 2 、CLK 4 、CLK 6 And select one of them to output to the phase interpolator 101, and the multi...

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Problems solved by technology

However, such a mechanism not only has a slow processing speed, but also needs to control the switching and interpolation actions separately, which will make the circuit design more complicated.

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