Altera UG-01080 Betriebsanweisung Seite 33

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Chapter 3: 10GBASE-R PHY IP Core 3–11
Data Interfaces
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Data Interfaces
Table 310 describes the signals in the SDR XGMII TX and RX interface. The TX
signals are driven from the MAC to the PCS. The RX signals are driven from the PCS
to the MAC.
Table 3–10. SDR XGMII TX Inputs (Part 1 of 2)
Signal Name Direction Description
XGMII TX Interface
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 to Table 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.
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 to Table 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.
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