HC4GX15 Datasheet, PDF (508/668 Pages) Altera Corporation – HardCopy IV Device Handbook

2–50
Chapter 2: HardCopy IV GX Dynamic Reconfiguration
The rx_tx_duplex_sel[1:0] Port
You can enable this port by selecting the Use 'rx_tx_duplex_sel' port to enable RX
only and TX only or duplex reconfiguration options in the Error checks/Data rate
switch screen of the ALTGX_RECONFIG MegaWizard Plug-In Manager, as shown in
Figure 2–18.
Figure 2–18. Use 'rx_tx_duplex_sel' Port to Enable RX Only Option and the TX only or Duplex
Reconfiguration Options in the ALTGX_RECONFIG MegaWizard Plug-In Manager
This option is available only when you select one of the dynamic reconfiguration
modes (in addition to the default Offset cancellation for Receiver channels option) in
the Reconfiguration settings screen of the ALTGX_RECONFIG MegaWizard Plug-In
Manager. Table 2–22 shows the settings for the rx_tx_duplex_sel[1:0] input port
of the ALTGX_RECONFIG instance for this port.
Table 2–22. Setting the rx_tx_duplex_sel[1:0] Input Port of the ALTGX_RECONFIG Instance
rx_tx_duplex_sel[1:0]
Reconfiguration Mode
2’b00
Receiver and Transmitter
2’b01
Receiver only
2’b10
Transmitter only
2’b11
Unsupported value
Note to Table 2–22:
(1) For more information, refer to “Dynamic Reconfiguration Controller Port List” on page 2–11.
For .mif-based dynamic reconfiguration modes, the advantage of using the
rx_tx_duplex_sel[1:0] port is that you can inform the dynamic reconfiguration
controller to load only the receiver settings, transmitter settings, or both receiver and
transmitter settings, through this port.
HardCopy IV Device Handbook, Volume 3
© June 2009 Altera Corporation