Retimer Link Management Using In-Band Ordered Sets

The patent segments the retimer's operational capabilities by implementing separate error detection and reporting pathways for low-latency and non-low-latency modes. In low-latency mode, the retimer processes data packets without interruption while error checking continues independently, allowing speed maintenance while error management functions remain active through dedicated hardware logic that operates in parallel with the data path.

The patent implements preliminary error detection and logging capabilities that continuously monitor data integrity even during low-latency operations. The retimer performs parity checks and logs potential errors in advance before they can cause data corruption, enabling proactive error management that prepares the system for corrective actions without interrupting the high-speed data flow.

The patent makes the retimer multi-functional by enabling it to perform both data transmission and link management functions. The retimer can manipulate Control SKP Ordered Sets to initiate link management handshakes, request retraining, and report errors while simultaneously maintaining its primary data forwarding function. This universal capability allows a single device to handle multiple tasks that would traditionally require separate components.

The retimer is designed to autonomously perform link management tasks without requiring external intervention. It can independently detect link errors, initiate retraining sequences by manipulating Control SKP Ordered Sets, and manage its own operational state transitions. This self-service capability reduces the need for complex external control logic while improving link reliability.