Receiving chip circuit and communication system

Abstract

The embodiment of the invention discloses a receiving chip circuit and a communication system; wherein, the receiving chip circuit comprises M receiving chips; in the M receiving chips, the input ends of N receiving chips are respectively provided with a regulating circuit which is used for gaining energy of clock signals input into the input end of the N receiving chips in a selected frequency band to a preset value; wherein, N is an integer which is more than zero and M is larger than N. The communication system comprises a PCB, which is provided with a clock chip and the receiving chip circuit; and the clock chip provides clock signals for the M receiving chips in the receiving chip circuit by transmission lines. The embodiment of the invention can effectively improve rising rate of the clock signals, reduce the rising time of the clock signals, meet the input requirements of working chips and guarantee the stable working of the working chips.

Description

technical field [0001] The invention relates to communication technology, in particular to a receiving chip circuit and a communication system. Background technique [0002] In a communication system, for a large-scale working chip, it usually needs to rely on at least one communication system clock provided by the outside, that is, a working clock, to work. With the advancement of communication technology and the gradual increase in communication requirements, the performance requirements of working chips for working clocks are also getting higher and higher. Among the performance parameters of the working clock, a very important parameter is the rise time of the clock signal. Wherein, the rising time of the signal refers to the time required for the signal to transition from a low level to a high level. At present, the industry generally uses the transition time between 20% and 80% or 10% to 90% of the difference between the high level and the low level to define the ris...

AI Technical Summary

Problems solved by technology

In this case, it is usually necessary to choose a clock chip with better quality, but the price of this chip is higher, which increases the cost of the communication system

[0005] The second is that the rise time of the output signal of the clock chip can meet the requirements of the working chip of the communication system. However, due to the attenuation of the long-distance transmission line, the rise speed of the clock signal is degraded.

There are two losses in signal transmission on the transmission line: the first is the skin effect loss, that is, the energy lost because the current of the high-speed signal is only distributed on the edge of the transmission line

The second is dielectric loss, that is, when the signal is transmitted on the transmission line, some energy will enter the dielectric layer, causing the medium to heat and lose energy

This increases the cost of the communication system and the complexity of the product structure, and increases the design difficulty of the communication system product

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