Synchronised clock providing device and realizing method
A technology for synchronizing clocks and supplying devices, applied in the directions of synchronizing devices, digital transmission systems, electrical components, etc., can solve the problems of poor expansion and transplant ability, inability to completely eliminate, complex device structure and control, etc., to enhance the ability of cascade expansion , flexibly implement or integrate, structure and control simple effects
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[0029] One of the present invention: synchronous clock supply device
[0030] As shown in Figure 2, the present invention, that is, a synchronous clock supply device, includes two main units and a standby unit. The main and standby units each include a digital phase-locked loop 1, a local crystal oscillator 2, and an E1 / T1 chain respectively connected to it. The interface unit 3, the distribution and drive module 4 and the microprocessor 5, the microprocessor 5 is also connected to the link interface unit 3, and: two digital phase-locked loops 1, 1'output cross-feeding to the digital lock of the opposite end Input of phase loop 1', 1; two microprocessors 5, 5'are connected to each other.
[0031] Digital phase-locked loop 1 and local crystal oscillator 2 use the existing commercial integrated digital phase-locked loop (DPLL) and crystal oscillator to form a phase-locked functional module, which is used to track and lock the external reference clock and generate a phase-synchronize...
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