HC4GX15 Datasheet, PDF (483/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 2: HardCopy IV GX Dynamic Reconfiguration
2–25
Quartus II MegaWizard Plug-In Manager Interfaces to Support Dynamic Reconfiguration
Figure 2–8 shows the logical channel addresses of all the channels within ALTGX
instance 1 and ALTGX instance 2.
Figure 2–8. Case 1—Block Diagram of the ALTGX Instances and ALTGX_RECONFIG Instance (Note 1)
Case 1
ALTGX Instance 1
Single Channel Instance
The What is the starting channel number? option = 0
Set the What is the number of
channels controlled by the
reconfig controller? option = 8
reconfig_fromgxb [16:0]
Channel 0
(logical_address_channel = 0)
ALTGX_RECONFIG Instance
reconfig_fromgxb [33:0] (2)
ALTGX Instance 2
Three Channel Instance
The What is the starting channel number? option = 4
Channel 0
(logical_address_channel = 4)
reconfig_fromgxb [16:0]
Channel 1
(logical_address_channel = 5)
Channel 2
(logical_address_channel = 6)
reconfig_togxb [3:0]
Notes to Figure 2–8:
(1) For more information, refer to “Regular Transceiver Channels: Case 1” on page 2–24.
(2) reconfig_fromgxb[33:0] = {reconfig_fromgxb[16:0], reconfig_fromgxb[16:0]}.
Regular Transceiver Channels: Case 2
Table 2–6 shows an example scenario for Case 2.
Table 2–6. Example Scenarios for Logical Channel Addressing in ALTGX Instances for Case 2
Example Scenario
Case 2
Number of ALTGX Instances
Number of ALTGX_RECONFIG
Instances
Two ALTGX instances:
One ALTGX_RECONFIG instance
■ ALTGX instance 1 (6 channels) ^{controlling both the ALTGX instances.}
■ ALTGX instance 2 (3 channels)
© June 2009 Altera Corporation
HardCopy IV Device Handbook, Volume 3