Altera Arria V Avalon-ST - Manual (Page 85)

Transceiver Reconfiguration
Dynamic reconfiguration compensates for variations due to process, voltage and temperature (PVT).
Among the analog settings that you can reconfigure are V
OD
, pre-emphasis, and equalization.
You can use the Altera Transceiver Reconfiguration Controller to dynamically reconfigure analog
settings. For Gen2 operation, you must turn on Enable duty cycle calibration in the Transceiver Reconfi‐
guration Controller GUI. Arria V devices require duty cycle calibration (DCD) for data rates greater than
4.9152 Gbps. For more information about instantiating the Altera Transceiver Reconfiguration Controller
IP core refer to Hard IP Reconfiguration .
Table 4-19: Transceiver Control Signals
In this table, is the number of interfaces required.
Signal Name Direction Description
reconfig_from_
xcvr[(46)-1:0]
Output Reconfiguration signals to the Transceiver Reconfiguration
Controller.
reconfig_to_xcvr[(
70)-1:0]
Input Reconfiguration signals from the Transceiver Reconfiguration
Controller.
The following table shows the number of logical reconfiguration and physical interfaces required for
various configurations. The Quartus II Fitter merges logical interfaces to minimize the number of physical
interfaces configured in the hardware. Typically, one logical interface is required for each channel and one
for each PLL.
The ×8 variants require an extra channel for PCS clock routing and control. The ×8 variants use channel 4
for clocking.
Table 4-20: Number of Logical and Physical Reconfiguration Interfaces
Variant Logical Interfaces
Gen1 and Gen2 ×1 2
Gen1 and Gen2 ×2 3
Gen1 and Gen2 ×4 5
Gen1 ×8 10
For more information about the Transceiver Reconfiguration Controller, refer to the Transceiver Reconfi‐
guration Controller chapter in the Altera Transceiver PHY IP Core User Guide .
Related Information
Altera Transceiver PHY IP Core User Guide
4-48 Transceiver Reconfiguration
2014.12.15
Altera Corporation Interfaces and Signal Descriptions
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