7.3.7.2.12 Code-Group Synchronization
Code-group synchronization is achieved using the following process:
- The receiver issues a synchronization request through the SYNC~ input
- The transmitter issues a stream of K28.5 symbols
- The receiver synchronizes and waits for correct reception of at least 4 consecutive K symbols
- The receiver deactivates the synchronization request
- Upon detecting that the receiver has deactivated the SYNC~ pin, the transmitter continues emitting K symbols until the next LMFC boundary (or optionally a later LMFC boundary)
- On the first frame following the selected LMFC boundary the transmitters emit an initial lane-alignment sequence
The initial-lane alignment sequence transmitted by the ADC device is defined in additional detail in JESD204B section 5.3.3.5.