Intel Cyclone 10 GX User Manual page 326

In Cyclone 10 GX devices, there are two levels of arbitration:
• Reconfiguration interface arbitration with the PreSICE calibration engine
When you have control over the internal configuration bus, refer to the second
level of arbitration: Arbitration between multiple masters within the Native
PHY/PLL IPs.
For more details about arbitration between the reconfiguration interface and
PreSICE, refer to the Calibration chapter.
• Arbitration between multiple masters within the Native PHY/PLL IPs
Below are the feature blocks that can access the programmable registers:
— Embedded reconfiguration streamer (Available in the Native PHY and ATX PLL
IPs only)
— ADME
— User reconfiguration logic connected to the reconfiguration interface
When the internal configuration bus is not owned by the PreSICE, which feature
block has access depends on which of them are enabled.
These feature blocks arbitrate for control over the programmable space of each
transceiver channel/PLL. Each of these feature blocks can request access to the
programmable registers of a channel/PLL by performing a read or write operation
to that channel/PLL. For any of these feature blocks to be used, you must first
have control over the internal configuration bus. You must ensure that these
feature blocks have completed all the read/write operations before you return the
bus access to PreSICE.
The embedded reconfiguration streamer has the highest priority, followed by the
reconfiguration interface, followed by the ADME. When two feature blocks are
trying to access the same transceiver channel on the same clock cycle, the feature
block with the highest priority is given access. The only exception is when a lower-
priority feature block is in the middle of a read/write operation and a higher-
priority feature block tries to access the same channel. In this case, the higher-
priority feature block must wait until the lower-priority feature block finishes the
read/write operation.
Note: When you enable ADME in your design, you must
Related Information
• Steps to Perform Dynamic Reconfiguration
• Calibration
® ®
Intel Cyclone 10 GX Transceiver PHY User Guide
326
— connect an Avalon-MM master to the reconfiguration interface
— OR connect the
reconfig_clock
ground the
reconfig_write
and
reconfig_writedata
the reconfiguration interface signals are not connected appropriately,
there will be no clock or reset for the ADME and ADME will not function
as expected
on page 373
6. Reconfiguration Interface and Dynamic Reconfiguration
,
reconfig_reset
,
reconfig_read
signals of the reconfiguration interface. If
on page 328
UG-20070 | 2018.09.24
signals and
,
reconfig_address
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