IXF1104
user. The RGMII interface supports operation at 10/100/1000 Mbps when a
5.1.5.1Speed
The copper MAC supports 10 Mbps, 100 Mbps, and 1000 Mbps. All required speed adjustments, clocks, etc., are supplied by the MAC. The operating speed of the MAC is programmable through the “MAC IF Mode and RGMII Speed ($ Port_Index + 0x10)" (MAC_IF_Mode). The IXF1104 speed setting must be programmed by the system software to match the speed of the attached PHY for proper IXF1104 operation.
Note: When the IXF1104 is configured to use the GMII interface, the only mode of operation that is supported is 1000 Mbps
If 10/100 Mbps operation is required in either
5.1.5.2Duplex
The MAC supports
5.1.5.3Copper Auto-Negotiation
In the copper MAC,
Note: In copper mode,
5.1.6Jumbo Packet Support
The IXF1104 supports jumbo frames. The jumbo frame length is dependent on the application and the IXF1104 design is optimized for a 9.6 KB jumbo frame length. Larger lengths can be programmed, but limited system performance may lead to data loss during certain
The value programmed into the“Max Frame Size (Addr: Port_Index + 0x0F)" determines the maximum length frame size the MAC can receive or transmit without activating any error counters, and without truncation.
The“Max Frame Size (Addr: Port_Index + 0x0F)" bits 13:0 set the frame length. The default value programmed into this register is 0x05EE (1518). The value is internally adjusted by +4 if the frame has a VLAN tag. The overall programmable maximum is 0x3FFF or 16383 bytes.
Datasheet | 77 |
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004