Xilinx 1000BASE-X - Manual (Page 41)

Ethernet 1000BASE-X PCS/PMA or SGMII v9.1 www.xilinx.com 41
UG155 March 24, 2008
GUI Interface R
Physical Interface
Depending on the target architecture, two physical interface options are available for the
core.
•
RocketIO . Uses a RocketIO transceiver specific to the selected device family to extend
the 1000BASE-X functionality to include both PCS and PMA sub-layers. For this
reason, it is available only for Virtex-II Pro, Virtex-4 FX, Virtex-5 LXT, Virtex-5 SXT,
and Virtex-5 FXT devices. For additional information, see
“RocketIO Transceiver
Logic” in Chapter 7 .
•
Ten Bit Interface (TBI) . Available in all supported families and provides 1000BASE-X
or SGMII functionality with a parallel TBI used to interface to an external SERDES.
For more information, see
“Ten-Bit-Interface Logic” in Chapter 6 . Default setting.
MDIO Management Interface
Select this option to include the MDIO Management Interface to access the PCS
Configuration Registers. See
“MDIO Management Interface” in Chapter 9 .
If this option is not selected, the core is generated with a replacement configuration vector.
See
“Optional Configuration Vector” in Chapter 9 . The Management Interface is selected
by default.
Auto-Negotiation
Select this option to include Auto-Negotiation functionality with the core, available only if
the core includes the optional Management Interface. For more information, see
Chapter
10, “Auto-Negotiation.” The default is to include Auto-Negotiation.
RocketIO Transceiver CRC Logic
This option is visible in the GUI only when a Virtex-II Pro device family is selected, and
then only when the RocketIO Interface is selected with the 1000BASE-X standard.
Select this option to use the built-in CRC functionality of the Virtex-II Pro RocketIO
transceiver. See
Chapter 5, “Using the Virtex-II Pro RocketIO Transceiver CRC
Functionality.” This option is disabled (not displayed) by default.
SGMII/Dynamic Standard Switching Elastic Buffer Options
The SGMII/Dynamic Standard Switching Options screen, used to customize the Ethernet
1000BASE-X PCS/PMA or SGMII core, is only displayed if either SGMII or Both is selected
in the Select Standard section of the initial customization screen, and only if RocketIO is
selected as the Physical Standard.