EP4CE30F29C7N Datasheet, PDF (404/488 Pages) Altera Corporation – Cyclone IV Device Handbook, Volume 1

3–6
Chapter 3: Cyclone IV Dynamic Reconfiguration
Dynamic Reconfiguration Controller Port List
Table 3–2. Dynamic Reconfiguration Controller Port List (ALTGX_RECONFIG Instance) (Part 3 of 7)
Port Name
logical_channel_
address[n..0]
rx_tx_duplex_sel
[1..0]
Input/
Output
Description
Enabled by the ALTGX_RECONFIG MegaWizard Plug-In Manager when you enable the Use
'logical_channel_address' port for Analog controls reconfiguration option in the Analog
controls screen.
Input
The width of the logical_channel_address port depends on the value you set in the
What is the number of channels controlled by the reconfig controller? option in the
Reconfiguration settings screen. This port can be enabled only when the number of
channels controlled by the dynamic reconfiguration controller is more than one.
Number of channels controlled
by the reconfiguration controller
logical_channel_address
input port width
2
3–4
5–8
9–16
logical_channel_address[0]
logical_channel_address[1..0]
logical_channel_address[2..0]
logical_channel_address[3..0]
This is a 2-bit wide signal. You can select this in the Error checks screen.
The advantage of using this optional port is that it allows you to reconfigure only the
transmitter portion of a channel, even if the channel configuration is duplex.
For a setting of:
Input ^{■ rx_tx_duplex_sel[1:0] = 2'b00—the transmitter and receiver portion of the}
channel is reconfigured.
■ rx_tx_duplex_sel[1:0] = 2'b01—the receiver portion of the channel is
reconfigured.
■ rx_tx_duplex_sel[1:0] = 2'b10—the transmitter portion of the channel is
reconfigured.
Cyclone IV Device Handbook,
Volume 2
November 2011 Altera Corporation