Multi-load clock signal circuit

Abstract

The invention relates to a multi-load clock signal circuit for promoting slew rate of the clock signal. The circuit comprises a clock generator and M loads; the clock generator comprises N clock signal pins with the same frequency, wherein, M is more than N and N is more than or equal to two; the N clock signal pins with the same frequency are connected to a connecting point which is respectivelyconnected to the M loads by M transmission lines. In the multi-load clock signal circuit, the N clock signal pins with the same frequency are connected to the connecting point which is respectively connected to each load by the transmission line. Compared with the existing multi-load clock signal circuit, the circuit in the invention can effectively promote the intensity of the clock signal received by each load, thus meeting the working requirements.

Description

technical field [0001] The invention relates to a multi-load clock signal circuit. Background technique [0002] The development of electronic technology makes IC (integrated circuit) work faster and faster, and the operating frequency is higher and higher, and the load designed on it, that is, the number of chips, is also increasing, so designers often need to generate clocks when designing One clock signal pin of the device is connected to two or more chips. In order to ensure that the load can work normally, the slew rate of the signal received by the load must meet the specifications to ensure that the signal has sufficient setup time (setup time) and hold time (hold time). If the slew rate of the signal is too slow, Timing requirements and functional operations will be seriously affected, and the work of the load will be affected. [0003] Since the driving capabilities of clock generators produced by different manufacturers are different, and the length of the transm...

AI Technical Summary

Problems solved by technology

pass figure 2 It can be seen that when the length of the transmission lines 110 and 120 is 4 inches, the rising and falling slew rates of the signals received by the load D11 or D12 can meet the needs of the work, but the falling slew rate is very close to the minimum value of the specification; When the transmission lines 110 and 120 are 20 inches long, the falling slew rate of the signal received by the load D11 or D12 cannot meet the specification, and the preparation time and holding time of the signal are short, which makes the system bear the risk of instability

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