Protection circuit, method and apparatus for data path, and computer readable storage medium

A protection circuit for a data path, including an input processing circuit, an output processing circuit, and a comparison module;

• wherein
• the input processing circuit is electrically connected with the input data bus of the data path, the output processing circuit is electrically connected with the output data bus of the data path, an input terminal of the data path is electrically connected with the input data bus, and an output terminal of the data path is electrically connected with the output data bus;
• the comparison module is electrically connected to the input processing circuit and the output processing circuit, respectively;
• the input processing circuit is configured to perform a check operation on an input data frame obtained from the input data bus according to a preset check mode to obtain a first operation result;
• the output processing circuit is configured to perform a check operation on an output data frame obtained from the output data bus and corresponding to the input data frame according to the preset check mode to obtain a second operation result;
• and
• the comparison module is configured to acquire the first operation result and the second operation result, and generate a first error alarm signal for the data path based on the first operation result and the second operation result.