
Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–14
Data Interfaces
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
The 72-bit RX XGMII data bus format is different from the standard SDR XGMII
interface. Table 4–12 shows the mapping this non-standard format to the standard
SDR XGMII interface:
Table 4–13 describes the serial data interface signals.
xgmii_tx_dc[52:45] xgmii_sdr_data[47:40]
Lane 5 data
xgmii_tx_dc[53] xgmii_sdr_ctrl[5]
Lane 5 control
xgmii_tx_dc[61:54] xgmii_sdr_data[55:48]
Lane 6 data
xgmii_tx_dc[62] xgmii_sdr_ctrl[6]
Lane 6 control
xgmii_tx_dc[70:63] xgmii_sdr_data[63:56]
Lane 7 data
xgmii_tx_dc[71] xgmii_sdr_ctrl[7]
Lane 7 control
Table 4–11. TX XGMII Mapping to Standard SDR XGMII Interface
Signal Name SDR XGMII Signal Name Description
Table 4–12. RTX XGMII Mapping to Standard SDR XGMII Interface
Signal Name XGMII Signal Name Description
xgmii_rx_dc[7:0] xgmii_sdr_data[7:0]
Lane 0 data
xgmii_rx_dc[8] xgmii_sdr_ctrl[0]
Lane 0 control
xgmii_rx_dc[16:9] xgmii_sdr_data[15:8]
Lane 1 data
xgmii_rx_dc[17] xgmii_sdr_ctrl[1]
Lane 1 control
xgmii_rx_dc[25:18] xgmii_sdr_data[23:16]
Lane 2 data
xgmii_rx_dc[26] xgmii_sdr_ctrl[2]
Lane 2 control
xgmii_rx_dc[34:27] xgmii_sdr_data[31:24]
Lane 3 data
xgmii_rx_dc[35] xgmii_sdr_ctrl[3]
Lane 3 control
xgmii_rx_dc[43:36] xgmii_sdr_data[39:32]
Lane 4 data
xgmii_rx_dc[44] xgmii_sdr_ctrl[4]
Lane 4 control
xgmii_rx_dc[52:45] xgmii_sdr_data[47:40]
Lane 5 data
xgmii_rx_dc[53] xgmii_sdr_ctrl[5]
Lane 5 control
xgmii_rx_dc[61:54] xgmii_sdr_data[55:48]
Lane 6 data
xgmii_rx_dc[62] xgmii_sdr_ctrl[6]
Lane 6 control
xgmii_rx_dc[70:63] xgmii_sdr_data[63:56]
Lane 7 data
xgmii_rx_dc[71] xgmii_sdr_ctrl[7]
Lane 7 control
Table 4–13. Serial Data Signals
Signal Name Direction Description
rx_serial_data
Input RX serial input data
tx_serial_data
Output TX serial output data
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