5.3.11. Transceiver Controller
The transceiver controller controls the transceiver and performs dynamic reconfiguration (if necessary) to achieve the desired receiver functionality for the SDI.
When the interface receives SD-SDI, the receiver transceiver sets to lock-to-refclk (LTR) mode and when the interface receives HD-SDI or higher SDI data rate, the receiver transceiver sets to lock-to-data (LTD) mode.
In dual-rate, triple-rate, or multi-rate mode, the IP core first sets to the highest data-rate mode (transceiver running at 2.97 Gbps for dual/triple rate and 11.88 Gbps for multi rate) in LTR mode.
The detect video standard submodule starts running for a period of time. The output of this submodule determines if the transceiver requires dynamic reconfiguration to a new mode. The dual-rate and triple-rate modes use 11× oversampling to receive SD-SDI. This means that you require only two transceiver setups because the rates for 3G-SDI and 11× SD-SDI are the same. For multi-rate (up to 12G) modes, you require two more setups to accommodate 6G-SDI and 12G-SDI.