| Char | Code | Bits | HEX | Description |
|---|---|---|---|---|
| /R/ | K28.0 | 000 11100 | 1C | Initial lane alignment sequence multi-frame start |
| /A/ | K28.3 | 011 11100 | 7C | Lane alignment |
| /Q/ | K28.4 | 100 11100 | 9C | Initial lane alignment sequence configuration marker |
| /K/ | K28.5 | 101 11100 | BC | Code group synchronization |
| /F/ | K28.7 | 111 11100 | FC | Frame synchronization |