DIGITAL DATA INTERFACE DEVICE

摘要

A cycle redundancy check, CRC, generator system (454) within a host system as well as a corresponding method is described. The system/method provides a mechanism to intentionally corrupt a CRC value. Thereby, the system (454) comprises a CRC generator (910) that generates a CRC value based on data to be included in a data packet to be transmitted over a digital transmission link, a CRC corrupter (920) that corrupts a CRC value generated by the CRC generator to convey host or related system status information, an error detector (930) that detects an error condition within a host system and provides instructions for the CRC corrupter to intentionally corrupt a CRC value. Also a corresponding CRC checker and method are described that can interpret intentionally corrupted CRC values.