The receiver performs the following functions:
- Video standard detection
- Video rate detection
- NRZI decoding and descrambling
- Word alignment
- Demultiplex data links
- Video timing flags extraction
- HD-SDI LN extraction
- HD-SDI CRC
- Payload ID extraction
- Synchronizing data streams
- Accessing transceiver
- Identifying and tracking of ancillary data
- Sync bit removal
The block diagrams below illustrate the SDI II IP core receiver (simplex) data path for each supported video standard.
For bidirectional or duplex mode, the protocol and PHY management & adapter blocks remain the same for each direction, except the Native PHY IP core, which is configured in duplex mode. The figure below illustrates the data path of a SD-SDI duplex mode.