Altera 40-Gbps Ethernet MAC and PHY MegaCore Function - Manual (Page 118)

The following 40-100GbE MAC and PHY IP core signals are not available in MAC-only IP core
variations:
• Clock signals:
•
clk_ref
(relevant only for IP core variations with the Sync–E support option turned off)
•
tx_clk_ref
(relevant only for IP core variations with the Sync-E support option turned on)
•
rx_clk_ref
(relevant only for IP core variations with the Sync-E support option turned on)
•
rx_recovered_clk
(relevant only for IP core variations with the Sync-E support option turned on)
• PCS and PMA reset signals:
•
pcs_tx_arst_ST
•
pcs_rx_arst_ST
•
pma_arst_ST
• Ethernet link signals
tx_serial
and
rx_serial
• PHY output status signals
tx_lanes_stable
and
lanes_deskewed
. Note that input signals with these
names are available, and should be supplied by the user logic that implements the PHY layer.
• Signals to connect to the external transceiver reconfiguration controller (relevant for Arria V GZ and
Stratix V devices only).
• 40GBASE-KR4 microprocessor interface and reconfiguration interface signals.
Table 3-21: 40-100GbE MAC IP Core Signals Not Visible in 40-100GbE MAC and PHY IP Core
Signal Name Direction Description
Transmit Side Signals
tx_mii_d[*64-1:0] Output
MAC to PHY connection
interface
tx_mii_c[*8-1:0] Output
tx_mii_valid Output
tx_mii_ready Input
tx_lanes_stable Input
Receive Side Signals
rx_mii_d[*64-1:0] Input
PHY to MAC connection
interface
rx_mii_c[*8-1:0] Input
rx_mii_valid Input
lanes_deskewed Input Lane to lane deskew interface
Note: When simulating the full design the
lanes
_
deskewed
input comes from the output of the RX PCS,
indicating a fully locked status. To avoid confusion, when simulating the
alt_e40_mac
or
alt_e100_mac
wrapper as the top level, drive the
lanes_deskewed
input and the
tx_mii_ready
input to '1'.
UG-01088
2014.12.15
Signals of 40-100GbE MAC‑Only IP Core Variations 3-71
Functional Description Altera Corporation
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