Abstract: A control method and device for bidirectional communication are provided. A handshake between the master and slave communication units is realized by sending the training sequence. The master communication unit is controlled to obtain control information from the ECU. The control information is packaged into the custom package, and the custom package is encoded. The master communication unit is controlled to send the custom package to the slave communication unit. The slave communication unit decodes, verifies and corrects the custom package. The slave communication unit feeds back the correct message to the master communication unit if the custom package is verified to be correct, else feeds back the error message to the master communication unit. The master communication unit resends the custom package to the slave communication unit if it receives the error information or does not receive any feedback information within the preset time period.

Abstract: A control method and device for bidirectional communication are provided. A handshake between the master and slave communication units is realized by sending the training sequence. The master communication unit is controlled to obtain control information from the ECU. The control information is packaged into the custom package, and the custom package is encoded. The master communication unit is controlled to send the custom package to the slave communication unit. The slave communication unit decodes, verifies and corrects the custom package. The slave communication unit feeds back the correct message to the master communication unit if the custom package is verified to be correct, else feeds back the error message to the master communication unit. The master communication unit resends the custom package to the slave communication unit if it receives the error information or does not receive any feedback information within the preset time period.

Abstract: A serializer includes: an I2C controller, an I2C command analysis circuit, a system control circuit, a low-speed data transmission circuit, a high-speed data conversion circuit, a low-speed data processing circuit, a parallel-serial conversion bidirectional circuit, a serial-parallel conversion circuit, a protocol analysis circuit, a video data processing circuit and an I2C receiver. The serializer can receive the external control command from the external controller through the I2C controller, and can also receive the external control command and the internal control command through the parallel-serial conversion bidirectional circuit. In addition, the serializer can also receive the video data from the external video source through the serial-parallel conversion circuit, and receive the audio data from the external source through the I2C receiver. Therefore, the serializer in the present disclosure can be applied to both two application scenarios, which is more flexible in application.

Abstract: An FEC codec module is provided. Code elements, i.e., code words of forward error correction code, are added to the data code stream of each transmission link through the codec module, so that accurate error determination and automatic error correction may be realized at the receiving end. The interleaving process is performed on multi-link data to prevent the occurrence of continuous burst errors in the data link in a transmission process, and the error correction capability of FEC is utilized to improve the data transmission efficiency and anti-interference ability of the system.

Abstract: A serializer includes: an I2C controller, an I2C command analysis circuit, a system control circuit, a low-speed data transmission circuit, a high-speed data conversion circuit, a low-speed data processing circuit, a parallel-serial conversion bidirectional circuit, a serial-parallel conversion circuit, a protocol analysis circuit, a video data processing circuit and an I2C receiver. The serializer can receive the external control command from the external controller through the I2C controller, and can also receive the external control command and the internal control command through the parallel-serial conversion bidirectional circuit. In addition, the serializer can also receive the video data from the external video source through the serial-parallel conversion circuit, and receive the audio data from the external source through the I2C receiver. Therefore, the serializer in the present disclosure can be applied to both two application scenarios, which is more flexible in application.