Altera 10-Gbps Ethernet MAC MegaCore Function - Manual (Page 85)

7–18 Chapter 7: Functional Description
Congestion and Flow Control
10-Gbps Ethernet MAC MegaCore Function User Guide February 2014 Altera Corporation
Figure 7–10 shows the transmission of an XON pause frame. The MAC sets the
destination address field to the global multicast address, 01-80-C2-00-00-01
(0x010000c28001) and the source address to the MAC primary address configured in
the tx_addrins_macaddr0 and tx_addrins_madaddr1 registers.
Figure 7–10. XON Pause Frame Transmission
tx_clk_clk
xgmii_tx_data[71]
xgmii_tx_data[70:63]
xgmii_tx_data[62]
xgmii_tx_data[61:54]
xgmii_tx_data[53]
xgmii_tx_data[52:45]
xgmii_tx_data[44]
xgmii_tx_data[43:36]
xgmii_tx_data[35]
xgmii_tx_data[34:27]
xgmii_tx_data[26]
xgmii_tx_data[25:18]
xgmii_tx_data[17]
xgmii_tx_data[16:9]
xgmii_tx_data[8]
xgmii_tx_data[7:0]
D5 CC 01 00 B9
55 EE 00 06
55 01 08 00 69
55 00 88 00 96
55 00 EE 00
55 C2 AA 00
55 80 CC 00
FB 01 88 00 FD