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1. About Triple-Speed Ethernet Intel® FPGA IP for Agilex™ 5 devices
2. Getting Started
3. Parameter Settings
4. Functional Description
5. Configuration Register Space
6. Interface Signals
7. Design Considerations
8. Timing Constraints
9. Testbench
10. Triple-Speed Ethernet Intel® FPGA IP User Guide Archives
11. Document Revision History for the Triple-Speed Ethernet Intel® FPGA IP User Guide: Agilex™ 5 FPGAs and SoCs
A. Ethernet Frame Format
B. Simulation Parameters
4.1.1. MAC Architecture
4.1.2. MAC Interfaces
4.1.3. MAC Transmit Datapath
4.1.4. MAC Receive Datapath
4.1.5. MAC Transmit and Receive Latencies
4.1.6. FIFO Buffer Thresholds
4.1.7. Congestion and Flow Control
4.1.8. Magic Packets
4.1.9. MAC Local Loopback
4.1.10. MAC Reset
4.1.11. PHY Management (MDIO)
4.1.12. Connecting MAC to External PHYs
6.1.1. 10/100/1000 Ethernet MAC Signals
6.1.2. 10/100/1000 Multiport Ethernet MAC Signals
6.1.3. 10/100/1000 Ethernet MAC with 1000BASE-X/SGMII PCS Signals
6.1.4. 10/100/1000 Ethernet MAC with Internal FIFO Buffers, and 1000BASE-X/SGMII 2XTBI PCS with Embedded PMA (GTS) Signals
6.1.5. 10/100/1000 Multiport Ethernet MAC with 1000BASE-X/SGMII PCS Signals
6.1.6. 1000BASE-X/SGMII PCS Signals
6.1.7. 1000BASE-X/SGMII 2XTBI PCS Signals
6.1.1.1. Clock and Reset Signals
6.1.1.2. Clock Enabler Signals
6.1.1.3. MAC Control Interface Signals
6.1.1.4. MAC Status Signals
6.1.1.5. MAC Receive Interface Signals
6.1.1.6. MAC Transmit Interface Signals
6.1.1.7. Pause and Magic Packet Signals
6.1.1.8. MII/GMII/RGMII Signals
6.1.1.9. PHY Management Signals
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4.1.4.5. Payload Pad Removal
You can turn on padding removal by setting the PAD_EN bit in the command_config register to 1. The MAC function removes the padding, prior to forwarding the frames to the user application, when the payload length is less than the following values for the different frame types:
- 46 bytes for basic MAC frames
- 42 bytes for VLAN tagged frames
- 38 bytes for stacked VLAN tagged frames
Padding removal is not applicable when:
- the length or type field is equal to or greater than 1536 (0x600) for basic frame.
- the client length or type field is equal to or greater than 1536 (0x600) for VLAN and stacked VLAN frames.
When padding removal is turned off, complete frames including the padding are forwarded to the Avalon® streaming receive interface.