User guide

December 2010 Altera Corporation Altera Transceiver PHY IP Core User Guide
9. Transceiver Reconfiguration
Controller
You can use the Altera Transceiver Reconfiguration Controller to dynamically
reconfigure the TX and RX analog settings in Stratix IV GX devices. This modules is
included in the Transceiver Toolkit, the XAUI PHY IP core, and the 10GBASE-R PHY
IP core. Figure 9–1 shows the top-level modules of the Transceiver Reconfiguration
Controller.
f In Stratix IV devices, the PCI Express IP core uses a different reconfiguration IP core.
Refer to the “Transceiver Offset Cancellation” section in the PCI Express Compiler User
Guide for more information.
f For information about dynamic reconfiguration feature in Stratix V devices, refer to
the Dynamic Reconfiguration in Stratix V Devices chapter of the Stratix V Device
Handbook.
You can access the dynamic reconfiguration functionality using an embedded
processor to drive the Avalon-MM PHY management interface of the Transceiver
Toolkit, the XAUI PHY IP core or the 10GBASE-R PHY IP core as appropriate. The
Analog Control and Offset Cancellation modules translate device independent
commands received on their Avalon-MM slave interface to the Reconfiguration
Controller module which converts them into device dependent commands on the
dynamic reconfiguration interface.
You can change the following analog PMA settings:
■ Pre-emphasis
■ DC gain
■ Differential output voltage (V
OD
)
Figure 9–1. Transceiver Reconfiguration Controller for Use in a System that Implements Dynamic Reconfiguration
to
Embedded
Controller
Transceiver Reconfiguration IP Cores
M
Analog
Control
S
M
Avalon-MM
PHY
Mgmt
S
Altera PHYs:
10GBase-R
XAUI
Dynamic
Reconfiguration
S
Offset
Cancel-
lation
M
S
Reconfig
Controller
reconfig_togxb[3:0]
reconfig_fromgxb[16:0]
Device Independent Interfaces
Device Dependent Interface
Stratix IV GX