HC4GX15 Datasheet, PDF (496/668 Pages) Altera Corporation – HardCopy IV Device Handbook

2–38
Chapter 2: HardCopy IV GX Dynamic Reconfiguration
Quartus II MegaWizard Plug-In Manager Interfaces to Support Dynamic
Table 2–16. ALTGX and ALTGX_RECONFIG Settings for Instances 1 and 2 in Cases 1 through 5 (Part 2 of 2)
Example Scenario
ALTGX Instance 1
Settings
ALTGX Instance 2
Settings
ALTGX_RECONFIG
Instance 1 Settings
ALTGX_RECONFIG
Instance 2 Settings
Case 4
For a block diagram of
the ALTGX instances
and the
ALTGX_RECONFIG
instance in this design,
refer to Figure 2–11 on
page 2–31.
■ Five regular
transceiver
channels controlled
by
ALTGX_RECONFIG
instance 1.
■ Set the What is the
starting channel
number? option in
the Reconfig
screen to 0.
■ The logical channel
address of the first
to fifth channels are
0, 1, 2, 3, and 4,
respectively.
■ Five regular
transceiver
channels controlled
by
ALTGX_RECONFIG
instance 2.
■ Set the What is the
starting channel
number? option in
the Reconfig
screen to 0.
■ The logical channel
address of the first
to fifth channels are
0, 1, 2, 3, and 4,
respectively.
■ Determine the
highest logical
channel address (4)
for ALTGX instance 1.
■ Determine the
highest logical
channel address (4)
for ALTGX instance 2.
■ Round it up to the
next multiple of 4.
■ Round it up to the
next multiple of 4.
■ Set the What is the
number of channels
controlled by the
controller? option in
the Reconfiguration
settings screen to 8.
■ Set the What is the
number of channels
controlled by the
controller? option in
the Reconfiguration
settings screen to 8.
Case 5
■ ALTGX instance 1
■ Determine the
stamped five times.
highest logical
■ Specify the starting
channel address (16).
channel number of
the other stamped
■ Round it up to the
next multiple of 4.
instances using the
■ Set the What is the
defparam
—
number of channels
—
parameter (for
controlled by the
Verilog) as shown:
controller? option in
defparam
the Reconfiguration
instance2.
settings screen to 20.
starting_chan
nel_number =
4; defparam
instance3.
starting_chan
nel_number =
8; and so on for the
remaining stamped
instances.
■ The logical channel
addresses of the
channels in the
stamped instances
are 0, 4, 8, 12, and
16, respectively.
HardCopy IV Device Handbook, Volume 3
© June 2009 Altera Corporation