Multi-stage cross cascade circuit and coordination controlling method

Abstract

This invention relates to multi grades crossing series circuit and its synergetic control method. The circuit includes multi grade crossing units and its corresponding control device. Each grade checker is set on the connecting line between the second and third crossing units, and adjustable time delay control device is set between each grade crossing unit and the corresponding control device. Exchanging connecting of the multiplex transmission signal is realized through each grade crossing unit. Control is done by each control device and the corresponding grades enable and crossing connecting configuration relation signal line that connected to each crossing unit, and the adjustable time delay controller. The time of each adjustable delay controller delay enable signal to the corresponding crossing unit is accurately adjusted by the check result to the crossing configuration switching. The signal integrity before and after the crossing chip action is ensured by using the device and method in this invention, so error code will not occur.

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

Images