15.7. Dynamic Reconfiguration for Arria V GZ Native PHY
Dynamic reconfiguration calibrates each channel to compensate for variations due to process, voltage, and temperature (PVT).
As silicon progresses towards smaller process nodes, circuit performance is affected more by variations due to process, voltage, and temperature (PVT). These process variations result in analog voltages that can be offset from required ranges. The calibration performed by the dynamic reconfiguration interface compensates for variations due to PVT.
For more information about transceiver reconfiguration refer to Chapter 16, Transceiver Reconfiguration Controller IP Core.
Informational Messages for the Transceiver Reconfiguration Interface
For non-bonded clocks, each channel and each TX PLL has a separate dynamic reconfiguration interfaces. The MegaWizard Plug-In Manager provides informational messages on the connectivity of these interfaces. The following example shows the messages for the Arria V GZ Native PHY with four duplex channels, four TX PLLs, in a non-bonded configuration.
PHY IP will require 8 reconfiguration interfaces for connection to the external reconfiguration controller. Reconfiguration interface offsets 0-3 are connected to the transceiver channels. Reconfiguration interface offsets 4–7 are connected to the transmit PLLs.
Overriding Logical Channel 0 Channel Assignment Restrictions in Arria V GZ Device for ×6 or ×N Bonding
If you are using ×6 or ×N bonding, transceiver dynamic reconfiguration requires that you assign the starting channel number. Logical channel 0 should be assigned to either physical transceiver channel 1 or channel 4 of a transceiver bank. However, if you have already created a PCB with a different lane assignment for logical lane 0, you can use the workaound shown in the following example to remove this restriction. The following example redefines the pma_bonding_master parameter using the Intel® Quartus® Prime Assignment Editor. In this example, the pma_bonding_master was originally assigned to physical channel 1. (The original assignment could also have been to physical channel 4.) The to parameter reassigns the pma_bonding_master to the Deterministic Latency PHY instance name. You must substitute the instance name from your design for the instance name shown in quotation marks
set_parameter -name pma_bonding_master "\"1\"" -to "<PHY IP instance name>"
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