Altera Low Latency Ethernet 10G MAC - Manual (Page 46)

Figure 3-20: Fault Signaling
Remote Fault (0x9c000002)
Idle (07070707)
Remote Fault (0x9c000002)
Client
Interface
MAC
Tx
RS Tx
MAC
Rx
RS Rx
2
link_fault_status_xgmii_rx_data
XAUI /
10GBASE-R
PHY
External
PHY
Remote
Partner
XAUI /
10GBASE-R
Network
Interface
Local Fault (0x9c000001)
XGMII
Figure 3-21: XGMII TX interface Transmitting Remote Fault Signal
The following figure shows the timing for the XGMII TX interface transmitting the remote fault signal
(0x9c000002).
tx_clk_clk
xgmii_tx_control[3]
xgmii_tx_data[31:24]
xgmii_tx_control[2]
xgmii_tx_data[23:16]
xgmii_tx_control[1]
xgmii_tx_data[15:8]
xgmii_tx_control[0]
xgmii_tx_data[7:0]
02
00
00
9C
When you instantiate the MAC RX only variation, connect the
link_fault_status_xgmii_rx_data
signal to the corresponding RX client logic to handle the link fault. Similarly, when you instantiate the
MAC TX only variation, connect the
link_fault_status_xgmii_tx_data
signal to the corresponding
TX client logic.
3-24 XGMII Error Handling (Link Fault)
UG-01144
2014.12.15
Altera Corporation Functional Description of LL Ethernet 10G MAC
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