HC4GX15 Datasheet, PDF (493/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 2: HardCopy IV GX Dynamic Reconfiguration
2–35
Quartus II MegaWizard Plug-In Manager Interfaces to Support Dynamic Reconfiguration
Table 2–15. Highest Possible Logical Channel Address
48 ALTGX Instances
ALTGX MegaWizard Plug-In
Manager Setting
What is the number of
channels? in the General
screen
What is the starting channel
number? in the Reconfig
screen
ALTGX instance 1
24
TX instance 1: 0
TX instance 2: 4
.
.
.
.
.
.
TX instance 24: 96
ALTGX instance 2
24
RX instance 1: 100
RX instance 2: 104
.
.
.
.
.
.
RX instance 24: 184
ALTGX_RECONFIG Instance
ALTGX_RECONFIG instance
1:
Controls all 48 ALTGX
instances.
The highest logical channel address is assigned to the Receiver only channel in the
48th ALTGX instance; therefore, the setting is 184.
1 The highest possible logical channel address assigned to a transceiver channel in a
HardCopy IV GX device is the same whether the channel is a regular transceiver
channel or a PMA-only channel.
The Quartus II software automatically packs the logical channels into the physical
placements. The physical placement includes combining channels into the same
transceiver block. For more information, refer to “Combining Transceiver Channels
with Dynamic Reconfiguration Enabled” on page 2–140.
Total Number of Channels Controlled by the ALTGX_RECONFIG Instance
The dynamic reconfiguration controller requires information about the total number
of channels connected to it. Based on this information, the reconfig_fromgxb and
logical_channel_address input ports vary in width. Therefore, provide this
information in the What is the number of channels controlled by the reconfig
controller? option in the Reconfiguration settings screen of the ALTGX_RECONFIG
MegaWizard Plug-In Manager, as shown in Figure 2–12.
This section describes how to set the total number of channels controlled by the
dynamic reconfiguration controller (ALTGX_RECONFIG instance). The maximum
number of channels that you can set in this option is 256.
© June 2009 Altera Corporation
HardCopy IV Device Handbook, Volume 3