Multi-stage cross cascade circuit

Abstract

A multi-level cross-connect cascaded circuit and its cooperative control method, the circuit includes a multi-level cross-connect unit and its corresponding controller; There are also checkers at all levels on the connection line from the second level, and adjustable delay controllers are also set between the cross-connect units at all levels from the second-level cross-connect unit and their corresponding controllers; the multiplexed signals pass through each Each level of cross-connect unit realizes switching connection; each controller implements control through the enabling and cross-connect configuration relationship signal lines and adjustable delay controllers respectively connected to the corresponding cross-connect units of each level, and the adjustable delay controllers of each level The arrival time of the enabling signal to the corresponding cross-connect unit is delayed to precisely adjust the cross-connect configuration switching check result. The circuit and method of the present invention ensure the signal integrity before and after the operation of the cross chip by adopting the device and method of the present invention, and no code error will occur due to the occurrence of cross.

Description

technical field [0001] The present invention relates to a circuit design of a large-scale cross-connection device, and in particular to the improvement of a multi-stage cross-connect cascaded circuit; the present invention also relates to a multi-stage cross-connect cascade circuit that ensures the coordination of cross commands and input signals Control Method. Background technique [0002] When multi-level cross-connect devices are cascaded, changing the cross-connect configuration of cross-connect chips at each level can change the cross-connect relationship of the entire cascaded device. The cross-connect commands and input signals of all levels of cross-connect devices must be coordinated. The switching time and It is necessary that the transmission signals that change the cross-connect relationship arrive at the cross-connect chip at the same time, so as to avoid the disorder of the output signal under the coordinated action state of the cross-connect devices at all le...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-level cross-connect cascaded circuit and a method for its cooperative control. The technical problem to be solved is to overcome the switching action of the units at all levels when the multi-level cross-connect units in the prior art complete the change of the overall cross-connect configuration. The shortcomings of frame loss caused by the inconsistency between them, proposed the use of adjustable high-precision delay controllers to delay the cross-configuration switching instructions in the second and subsequent stages, so that the cross-configuration switching instructions in all levels of cross-connection units Arrives at the same time as the input signal that needs to switch the configuration relationship, so as to realize the coordination and consistency of the multi-level circuit action start, and ensure the device and method of not losing frames when the overall cross configuration is changed; the present invention transmits the switching verification data by sending the cross configuration relationship , Adjust the high-precision delay controller, monitor the checker, select the optimal delay method, and realize the non-destructive switching of the multi-level cross circuit for the transmission signal

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