IXF1104
Figure 7. Packet Buffering FIFO
MDI
SPI3 Interface |
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High Watermark |
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MAC Transfer Threshold |
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Low Watermark
High Watermark RX FIFO Data FlowRX Side
MAC
Low Watermark
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TXPAUSEFR (External | 802.3 Flow |
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Strobe) |
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| Control | 802.3x Pause Frame Generation | ||
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5.1.2.1.1Pause Frame Format
PAUSE frames are MAC control frames that are padded to the minimum size (64 bytes). Figure 8 and Figure 9 illustrate the frame format and contents.
Figure 8. Ethernet Frame Format
Number of bytes | 6 | 1 | 6 | 6 | 2 | 4 | |
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| Preamble | F | DA | SA | Data | FCS | |
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| Ethernet Frame |
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Note: 64 Byte Minimum / 1518 bytes Maximum |
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70 | Datasheet |
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004