Altera 10-Gbps Ethernet MAC MegaCore Function - Manual (Page 127)

9–8 Chapter 9: Interface Signals
10-Gbps Ethernet MAC MegaCore Function User Guide February 2014 Altera Corporation
9.0.3. SDR XGMII
Table 9–4 shows the SDR XGMII signals.
Table 9–4. SDR XGMII Signals
Signal Direction Width Description
xgmii_rx_data[] Input 72 8-lane data bus carrying 8-bit data and 1-bit control
information. Lane 0 starts from the least significant
bit.
xgmii_rx_data [7:0] / xgmii_tx_data[7:0] = data
xgmii_rx_data [8] / xgmii_tx_data[8] = control
xgmii_rx_data [16:9] / xgmii_tx_data[16:9] =
data
xgmii_rx_data
[17] / xgmii_tx_data[17] = control
... and so forth
xgmii_tx_data[] Output 72
link_fault_status_xgmii_rx_data[] Output 2
Indicates the link fault status from the RS RX to the
RS TX.
■ 00 = No link fault.
■ 01 = Local fault.
■ 10 = Remote fault.
When you instantiate the MAC RX only variation,
connect this signal to the corresponding TX client
logic to handle the local and remote faults.
link_fault_status_xgmii_tx_data[] Input 2
This signal is present only in the MAC TX only
variation. Connect this signal to the corresponding RX
client logic to handle the local and remote faults.
Indicates the link fault status to the RS TX.
■ 00 = No link fault
■ 01 = Local fault
■ 10 = Remote fault