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IXF1104 4-Port Gigabit Ethernet Media Access Controller
71 Datasheet
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
5.1.2.1.1 Pause 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 7. Packet Buffering FIFO
MDI
High Watermark
Data Flow
M
AC Transfer Threshold
Low Watermark
High Watermark
Data Flow
Low Watermark
RX FIFO High
TXPAUSEFR (External
Strobe)
802.3x Pause Frame Generation
TX FIFO
TX Side
MAC
RX FIFO
802.3 Flow
Control
RX Side
MAC
SPI3 Interface
B3231-01
Figure 8. Ethernet Frame Format
Number of bytes
Note: