HC4GX15 Datasheet, PDF (509/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 2: HardCopy IV GX Dynamic Reconfiguration
2–51
The logical_channel_address Port
Consider a scenario where a Receiver only ALTGX instance is controlled by the
dynamic reconfiguration controller and the .mif contains all the transmitter settings.
Enabling the rx_tx_duplex_sel[1:0] port in this scenario and setting it to 2’b01
ensures that the dynamic reconfiguration controller writes nothing into the physical
transmitter portion of the Receiver only ALTGX instance (because the .mif contains
transmitter settings that are not applicable to the Receiver only configuration).
The logical_channel_address Port
The logical_channel_address port is used to select a specific channel that is
controlled by the ALTGX_RECONFIG instance.
The logical_channel_address port is optional for the following mode:
■ PMA controls reconfiguration mode
However, it is always available for the following dynamic reconfiguration modes:
■ Data Rate Division in TX mode
■ Channel and TX PLL select/reconfig modes
Figure 2–19 shows the Use 'logical_channel_address' port for Analog controls
reconfiguration option in the Analog controls screen of the ALTGX_RECONFIG
MegaWizard Plug-In Manager.
Figure 2–19. The logical_channel_address Port in the ALTGX_RECONFIG MegaWizard Plug-In Manager
© June 2009 Altera Corporation
HardCopy IV Device Handbook, Volume 3