11. Low Latency PHY IP Core
The Altera Low Latency PHY IP Core receives and transmits differential serial data, recovering the RX clock from the RX input stream. The PMA connects to a simplified PCS, which contains a phase compensation FIFO. Depending on the configuration you choose, the Low Latency PHY IP Core instantiates one of the following channels:
- GX channels using the Standard PCS
- GX channels using the 10G PCS
- GT channels in PMA Direct mode
An Avalon-MM interface provides access to control and status information. The following figure illustrates the top-level modules of the Low Latency PHY IP Core.
Because the Low Latency PHY IP Core bypasses much of the PCS, it minimizes the PCS latency.
For more detailed information about the Low Latency datapath and clocking, refer to the refer to the “Stratix V GX Device Configurations” section in the Transceiver Configurations in Stratix V Devices chapter of the Stratix V Device Handbook.