Phase position interpolating device and phase position interpolating method

Abstract

The invention relates to a phase position interpolating device which comprises a first signal generating circuit used for generating a first signal with a first phase position, a third signal generating circuit used for generating a third signal with a second phase position, a fourth / fifth signal generating circuit which generates a fourth signal with a third phase position in a first mode and does not generate the fourth signal but generating a fifth signal with the second phase position in a second mode, and a phase position interpolator which generates an interpolating signal not according to the fourth signal in the first mode and generates the interpolating signal by means of the first signal, the third signal and the fifth signal in the second mode.

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. Such as 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 mu...

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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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