Altera 40-Gbps Ethernet MAC and PHY MegaCore Function User Manual
Page 28
Table 2-2: 40-100GbE Parameters: 40GBASE-KR4 Tab
Describes the parameters for customizing a 40GBASE-KR4 40-100GbE IP core, on the 40GBASE-KR4 tab of the
40-100GbE parameter editor. The parameters on this tab are available only if the following conditions hold:
• Your IP core targets a Stratix V device. You set the target device family for your Quartus II project or in the
Quartus II software before you acess the IP Catalog.
• You select the value of 40 GbE for the MAC configuration parameter on the Main tab.
• You select a Core option value that includes a PHY component (PHY or MAC & PHY) on the Main tab.
• You select the value of 40 Gbps (4x10) for the PHY configuration parameter on the Main tab.
• You select the value of Full Duplex for the Duplex mode parameter on the Main tab.
Parameter
Type
Range
Default
Setting
Parameter Description
KR4 General Options
Enable KR4
Boolean • True
• False
False
If this parameter is turned on, the IP core is a
40GBASE-KR4 variation. If this parameter is turned
off, the IP core is not a 40GBASE-KR4 variation, and
the other parameters on this tab are not available.
Enable KR4
Reconfigura‐
tion
Boolean • True
• False
True
If this parameter is turned on, the IP core supports
dynamic analog reconfiguration through a dedicated
reconfiguration interface. If this parameter is turned
off, the IP core cannot support auto-negotiation (AN)
or link training (LT) modes, and the AN and LT
parameters on this tab are not available. This
parameter does not affect FEC availability.
Auto-Negotiation
Enable Auto-
Negotiation
Boolean • True
• False
True
If this parameter is turned on, the IP core includes
logic to implement auto-negotiation as defined in
Clause 73 of IEEE Std 802.3ap–2007. If this parameter
is turned off, the IP core does not include auto-
negotiation logic and cannot perform auto-negotia‐
tion.
Currently the IP core can only negotiate to KR4
mode.
Link fail inhibit
time for 40Gb
Ethernet
Integer
(Unit:
ms)
500–510
ms
504 ms
Specifies the time before
link_status
is set to FAIL
or OK. A link fails if the time duration specified by
this parameter expires before
link_status
is set to
OK. For more information, refer to Clause 73 Auto-
Negotiation for Backplane Ethernet in IEEE Standard
802.3ap–2007.
The 40GBASE-KR4 IP core asserts the
lanes_
deskewed
signal to indicate
link_status
is OK.
2-6
IP Core Parameters
UG-01088
2014.12.15
Altera Corporation
Getting Started