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2.1. Port Numbering Scheme
2.2. Clock Signals
2.3. Reset Signals
2.4. Fractured MAC Segmented Interface for FGT Transceivers
2.5. Fractured MII or PCS-Only Interface for FGT Transceivers
2.6. Fractured PCS66 Interface for OTN/FlexE for FGT Transceivers
2.7. MAC Flow Control Interface
2.8. Status Interface
2.9. Avalon® Memory-Mapped Reconfiguration Interfaces
2.10. Precision Time Protocol Interface
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1.7. F-Tile Ethernet Multirate IP Core Features and Constraints
This section describes features and limitation in the current IP release.
- The IP only supports symmetric fractures where all ports in a specific configuration must use the same rate and modulation. For example, for 100GE-4 base reconfiguration profile, a valid secondary profile is 2x 50GE-2. An invalid secondary profiles are 1x 50GE-1 and 1x50GE-2 due to modulation mixture.
Attention: In the 25GE-1 Reconfigurable group for FGT mode, the 25GE profile can reconfigure as a 25GE and 10GE rate. In a multi-port 25GE profile, you can configure a mixture of 10GE and 25GE rates.
- The MAC-segmented interface is only available for MAC variants.
- All transceivers in a FGT reconfiguration group must be placed within a FGT QUAD:
- A reconfiguration group using four transceivers cannot use lanes partially from two different FGT QUADs.
- A reconfiguration group using eight transceivers must occupy exactly two adjacent FGT QUADs.
- The dynamic reconfiguration flow must use the same reconfiguration clock for the F-Tile Dynamic Reconfiguration Suite Intel® FPGA IP and all Multirate IP instances targeting a specific F-tile.
- The IP does not support the system PLL frequency of 322 MHz.
- All reconfiguration group ports must use the same PMA reference clock.
- The current release does not support external custom cadence. The custom cadence required for applicable scenarios is generated internally within the Multirate IP core.
- The dynamic reconfiguration does not support 40GE-4 rate with the Precision Time Protocol (PTP) enabled.
- Mixture of PTP and non-PTP profiles during the dynamic reconfiguration is not supported.
- Mixture of Basic and Advanced accuracy modes is not supported.
- Mixture of different fingerprint widths is not supported.