A redundancy circuit of an integrated circuit IC chip and a method for using the same

Abstract

The embodiment of the invention discloses a redundancy circuit of an integrated circuit IC chip and a method for using the same. The redundancy circuit comprises a first IC chip, a second IC chip anda controller. The initial state of the redundancy circuit is that the first IC chip is in an enabled state and the second IC chip is in an unenabled state. In the initial state, the first IC chip processes the input signal and outputs the first output signal corresponding to the input signal. A calibration operation is performed on the input calibration signal to obtain a first calibration result;if the controller judges that the first check result does not coincide with the target check result, the controller controls to turn off the first IC chip and controls to enable the second IC chip. In the enabled state, the second IC chip processes the input signal and outputs the second output signal. In this way, even if the enabled IC chip fails, the other IC chip can be switched to the enabled state without affecting the normal output of the redundant circuit, thereby improving the reliability and safety of the redundant circuit.

Description

technical field [0001] The present application relates to the technical field of integrated circuits, in particular to a redundant circuit of an integrated circuit IC chip and a method for using the same. Background technique [0002] At present, due to the continuous improvement of the demand for intelligence, in the circuit design of products such as storage devices and servers, it is often necessary to use highly integrated integrated circuit (Integrated Circuit, IC) chips, for example: will use various isolation functions IC chip or IC chip with level conversion function to process various signals to achieve signal isolation or level conversion function, and many IC chips need to process multiple input signals at the same time, and level the multiple input signals Convert or isolate. [0003] But, because some IC chip does not have the function of fault detection and alarm in these circuits, so, once IC chip breaks down, the circuit that uses this IC chip will take plac...

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Problems solved by technology

[0003] But, because some IC chip does not have the function of fault detection and alarm in these circuits, so, once IC chip breaks down, the circuit that uses this IC chip will take place unpredictable fault thereupon; And, along with this IC chip The more and more signals are processed, the more signals will be affected after a fault, and the greater the possible loss

In this way, the circuit including the IC chip is not reliable and safe enough, which is not conducive to the improvement of the integration and intelligence of the circuit.

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