Altera UG-01080 Guía de usuario Pagina 35

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Chapter 3: 10GBASE-R PHY IP Core 3–13
Status, 1588, and PLL Reference Clock Interfaces
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Table 312 provides the mapping from the XGMII RX interface to the XGMII SDR
interface.
Status, 1588, and PLL Reference Clock Interfaces
Table 313 describes signals that provide status information.
Table 3–12. Mapping from XGMII RX Bus to the XGMII SDR Bus
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 3–13. 10GBASE-R Status, 1588, and PLL Reference Clock Outputs
Signal Name Direction Description
rx_block_lock
Output Asserted to indicate that the block synchronizer has established synchronization.
rx_hi_ber
Output
Asserted by the BER monitor block to indicate a Sync Header high bit error rate
greater than 10
-4
.
rx_recovered_clk[<
n>:0]
Output This is the RX clock, which is recovered from the received data stream.
pll_locked
Output When asserted, indicates that the TX PLL is locked.
IEEE 1588 Precision Time Protocol
rx_latency_adj_10g
[11:0]
Output
When you enable 1588, this signal outputs the real time latency in XGMII clock
cycles (156.25 MHz) for the RX PCS and PMA datapath for 1G mode.
tx_latency_adj_10g
[11:0]
Output
When you enable 1588, this signal outputs real time latency in XGMII clock
cycles (156.25 MHz) for the TX PCS and PMA datapath for 1G mode.
PLL Reference Clock
pll_ref_clk
Input
For Stratix IV GT devices, the TX PLL reference clock must be 644.53125 MHz.
For Arria V and Stratix V devices, the TX PLL reference clock can be either
644.53125 MHz or 322.265625 MHz.
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