Article ID: 000080940 Content Type: Troubleshooting Last Reviewed: 09/11/2012

Why has the UniPHY CSR interface access latency increased in 11.0 and later version of the IP compared to 10.1 version of the IP?

Environment

    Quartus® II Subscription Edition
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Description An increase in access is expected in 11.0 and later version of the IP due to the change in Configuration and Status Register (CSR) architecture. Before 11.0 version, Avalon-MM interface from the controller was exposed to the PHY, but in 11.0 and later version, Avalon-MM bridge and merlin fabric is used to export the Avalon-MM interface along with the PHY CSR.
Resolution

 

Related Products

This article applies to 3 products

Stratix® IV GX FPGA
Stratix® III FPGAs
Stratix® IV E FPGA

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