HC4GX15 Datasheet, PDF (511/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 2: HardCopy IV GX Dynamic Reconfiguration
2–53
PMA Controls Reconfiguration
Dynamic Reconfiguration Controller Ports for PMA Controls
The PMA control ports for the ALTGX_RECONFIG MegaWizard Plug-In Manager are
available in the Analog controls screen, as shown in Figure 2–20. Here you can select
the PMA control ports you want to reconfigure (for example, use tx_vodctrl to
write new V_OD settings or tx_vodctrl_out to read the existing V_OD settings).
Figure 2–20. Dynamic Reconfiguration Controller Ports for PMA Controls in the ALTGX_RECONFIG MegaWizard Plug-In
Manager
Dynamically Reconfiguring PMA Controls
You can dynamically reconfigure the PMA controls of a transceiver channel using two
methods:
■ Method 1—You can reconfigure the PMA controls of a specific transceiver channel.
For more information, refer to “Method 1” on page 2–54.
■ Method 2—You can dynamically reconfigure the PMA controls of the transceiver
channels without using the logical_channel_address port. If you use this
method, the PMA controls of all the transceiver channels connected to the
dynamic reconfiguration controller are reconfigured. For more information, refer
to “Method 2” on page 2–56.
For both methods, you can additionally use the rx_tx_duplex_sel[1:0] port. The
width of this port is fixed to 2 bits.
The two methods are described in the following sections.
© June 2009 Altera Corporation
HardCopy IV Device Handbook, Volume 3