
Signal Name Direction Description
xgmii_tx_dc_[<n>71:0] Input Contains 8 lanes of data and control for
XGMII. Each lane consists of 8 bits of data and
1 bit of control.
• Lane 0-[7:0]/[8]
• Lane 1-[16:9]/[17]
• Lane 2-[25:18]/[26]
• Lane 3-[34:27]/[35]
• Lane 4-[43:36]/[44]
• Lane 5-[52:45]/[53]
• Lane 6-[61:54]/[62]
• Lane 7-[70:63]/[71]
Refer toTable 3-11 for the mapping of the
xgmii_tx_dc data and control to the xgmii_
sdr_data and xgmii_sdr_ctrl signals.
tx_ready Output Asserted when the TX channel is ready to
transmit data. Because the readyLatency on
this Avalon-ST interface is 0, the MAC may
drive tx_ready as soon as it comes out of reset.
xgmii_tx_clk Input The XGMII TX clock which runs at 156.25
MHz. Connect xgmii_tx_clk to xgmii_rx_
clk to guarantee this clock is within 150 ppm
of the transceiver reference clock.
XGMII RX Interface
xgmii_rx_dc_<n>[71:0] Output Contains 8 lanes of data and control for
XGMII. Each lane consists of 8 bits of data and
1 bit of control.
• Lane 0-[7:0]/[8]
• Lane 1-[16:9]/[17]
• Lane 2-[25:18]/[26]
• Lane 3-[34:27]/[35]
• Lane 4-[43:36]/[44]
• Lane 5-[52:45]/[53]
• Lane 6-[61:54]/[62]
• Lane 7-[70:63]/[71]
Refer toTable 3-12 for the mapping of the
xgmii_rx_dc data and control to the xgmii_
sdr_data and xgmii_sdr_ctrl signals.
rx_ready Output Asserted when the RX reset is complete.
UG-01080
2015.01.19
10GBASE-R PHY Data Interfaces
3-15
10GBASE-R PHY IP Core
Altera Corporation
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