Altera Stratix GX Transceiver - Manual (Page 146)

5–34 Altera Corporation
Stratix GX Transceiver User Guide January 2005
XAUI Mode MegaWizard Plug-In Manager
XAUI Mode
MegaWizard
Plug-In Manager This section describes the altgxb megafunction MegaWizard ® Plug-In
Manager options in XAUI mode. Altera recommends that the Stratix GX
transceiver block be instantiated and parameterized through the
MegaWizard Plug-In Manager in the Quartus II software. The Quartus II
MegaWizard Plug-In Manager offers a graphical user interface (GUI) that
organizes the altgxb options in easy-to-use sections. The MegaWizard
Plug-In Manager also sets the proper ports and parameters automatically,
based on the selected options and parameters. Invalid settings are
automatically flagged to help prevent illegal configurations. The
MegaWizard Plug-In Manager grays out any options that do not apply to
XAUI mode.
Although it is possible to instantiate the Stratix GX block directly by
calling out the altgxb megafunction, Altera recommends using the
MegaWizard Plug-In Manager to instantiate the altgxb megafunction to
reduce the chance of invalid settings.
XAUI Mode MegaWizard Considerations
Each altgxb MegaWizard instantiation can use one or more transceiver
blocks based on the number of channels you select. There are four
channels per transceiver block. In XAUI mode, the number of channels
are in multiples of four or transceiver block based.
Each MegaWizard instantiation must have similar functionality and data
rates. To use transceiver blocks that differ in functionality and/or data
rates, create a separate MegaWizard instantiation for each transceiver
block.
As mentioned in the clocking section, the MegaWizard Plug-In Manager
displays the configuration of the altgxb megafunction. This diagram
changes dynamically based on the selected mode, options, and clocking
schemes.
XAUI Mode altgxb MegaWizard Options
Figures 5–28 through 5–33 show the MegaWizard Plug-In Manager pages
where you select the options for a XAUI mode configuration.