HC4GX15 Datasheet, PDF (610/668 Pages) Altera Corporation – HardCopy IV Device Handbook

3–4
Chapter 3: HardCopy IV GX ALTGX_RECONFIG Megafunction User Guide
Dynamic Reconfiguration
Table 3–1 describes the available options on page 3 of the MegaWizard Plug-In
Manager for your ALTGX_RECONFIG custom megafunction variation. Select the
Match project/default option if you want to change the device Currently selected
device family options.
Make your selections on page 3, then click Next.
Table 3–1. MegaWizard Plug-In Manager Options (Page 3) (Part 1 of 2)
ALTGX_RECONFIG
Setting
What is the number of
channels controlled by
the reconfig controller?
Description
Reference
Determine the highest logical channel address amongst all
the ALTGX instances connected to the ALTGX_RECONFIG
instance. Round it up to the next multiple of four and set
that number in this option.
Depending on this setting, the ALTGX_RECONFIG
MegaWizard Plug-in Manager generates the appropriate
signal width for the interface signal
(reconfig_fromgxb) between the ALTGX_RECONFIG
and ALTGX instances. It also gives the necessary bus
width for all the selected physical media attachment (PMA)
signals.
“Total Number of Channels
Controlled by the
ALTGX_RECONFIG Instance”
section of the HardCopy IV GX
Dynamic Reconfiguration chapter
in volume 3 of the HardCopy IV
Device Handbook
Depending on the number of channels set, the resource
estimate changes because this is a soft implementation
that uses fabric logic resources. The resource estimate is
shown in the bottom left of Page 3 of the MegaWizard
Plug-in Manager.
HardCopy IV Device Handbook Volume 3
© June 2009 Altera Corporation