Altera Arria V Hard IP for PCI Express - Manual (Page 10)

1–2 Chapter 1: Datasheet
Features
Arria V Hard IP for PCI Express December 2013 Altera Corporation
User Guide
■ Qsys support using the Avalon Memory-Mapped (Avalon-MM) with a 64- or
128-bit interface to the Application Layer
■ Extended credit allocation settings to better optimize the RX buffer space based on
application type.
■ Qsys example designs demonstrating parameterization, design modules and
connectivity.
■ Optional end-to-end cyclic redundancy code (ECRC) generation and checking and
advanced error reporting (AER) for high reliability applications.
■ Easy to use:
■ Easy parameterization.
■ Substantial on-chip resource savings and guaranteed timing closure.
■ Easy adoption with no license requirement.
■ New features in the 13.1 release
■ Added support for Gen2 Configuration via Protocol (CvP) using an .ini file.
Contact your sales representative for more information.
.The Arria V Hard IP for PCI Express offers different features for the variants that use
the Avalon-ST interface to the Application Layer and the variants that use an
Avalon-MM interface to the Application Layer. Variants using the Avalon-ST interface
are available in both the MegaWizard Plug-In Manager and the Qsys design flows.
Variants using the Avalon-MM interface are only available in the Qsys design flow.
Variants using the Avalon-ST interfaces offer a richer feature set; however, if you are
not familiar with the PCI Express protocol, variants using the Avalon-MM interface
may be easier to understand. A PCI Express to Avalon-MM bridge translates the PCI
Express read, write and completion TLPs into standard Avalon-MM read and write
commands typically used by master and slave interfaces.
Table 1–1 outlines these
differences in features between variants with Avalon-ST and Avalon-MM interfaces to
the Application Layer.
Table 1–2. Differences in Features Available Using the Avalon-MM and Avalon-ST Interfaces (Part 1 of 2)
Feature Avalon-ST Interface Avalon-MM Interface
MegaCore License Free Free
Native Endpoint Supported Supported
Legacy Endpoint (1) Supported Not Supported
Root port Supported Supported
Gen1 ×1, ×2, ×4, and ×8 ×1, ×4, and ×8 (2)
Gen2 ×1, ×2, ×4 ×1, ×4 (2)
MegaWizard Plug-In Manager design flow Supported Not supported
Qsys design flow Supported Supported
64-bit Application Layer interface Supported Supported
128-bit Application Layer interface Supported Supported