Method for realizing compatibility of different clock circuits on printed circuit board

Abstract

The invention discloses a circuit compatible method of different clocks on the print circuit board, which contains at least two print circuit boards of different clock circuits. If each clock circuit disposes the clock signal separately and connects the clock signal part of different needs, the circuit is set on the print circuit board to pass different clock signal for reaching the needed clock; the circuit is connected selectively according to the need without breaking the circuit, which realizes the connection of different clock signal circuits on the same print circuit board. The invention reduces the cost and PCB area as well as the extra time-delay of clock signal.

Description

technical field [0001] The invention relates to the technical field of circuit design, in particular to a method for realizing compatibility of different clock circuits on a printed circuit board. Background technique [0002] Figure 1 and Figure 2 show the clock circuits of the two boards. Except for the clock circuit, the other functional modules of the two boards are the same. Figure 1 shows the clock circuit diagram of the board A, where the function of the phase-locked loop is to output the clock signal after phase modulation, de-jittering or changing the signal frequency of the input clock. Board A needs to pass the clock signal CLK_IN1 through the phase-locked loop, output the clock signal CLK_OUT to the device U1, and send the clock signal CLK_IN2 to the device U2. Figure 2 shows the clock circuit diagram of board B. Board B needs to pass the clock signal CLK_IN2 through the phase-locked loop, output the clock signal CLK_OUT to the device U2, and send the clock sign...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the disadvantages of high cost, large area occupied by PCB, and additional delay of clock signals when different existing clock circuits are compatible with the same PCB, and provide a method for realizing different clock signals on printed circuit boards. Compatible approach to clock circuits, thereby reducing cost, reducing PCB area, and reducing additional delay of clock signals

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