Altera RapidIO MegaCore Function - Manual (Page 37)

August 2014 Altera Corporation RapidIO MegaCore Function
User Guide
3. Parameter Settings
You customize the RapidIO IP core by specifying parameters in the RapidIO
parameter editor, which you access from the IP Catalog.
This chapter describes the parameters and how they affect the behavior of the IP core.
In the RapidIO parameter editor, you use the following pages from the Parameter
Settings
tab to parameterize the RapidIO IP core:
■ Physical Layer
■ Transport and Maintenance
■ I/O and Doorbell
■ Capability Registers
f
For information about setting simulation options, refer to the Creating a System with
Qsys chapter in volume 1 of the Quartus II Handbook.
Physical Layer Settings
The Physical Layer tab defines the characteristics of the Physical layer based on these
categories: Device Options, Data Settings, and Receive Priority Retry Threshold.
Device Options
Device Options comprise the following configuration options:
■ Mode selection
■ Transceiver selection
■ Enable transceiver dynamic reconfiguration
■ Automatically synchronize transmitted ackID
■ Send link-request reset-device on fatal errors
■ Link-request attempts
Mode Selection
Mode selection allows you to specify a 1x serial, 2x serial, or 4x serial port consisting
of one-, two-, or four-lane high-speed data serialization and deserialization.
The 2x mode is available only in variations that target an Arria V, Arria 10, Cyclone V,
or Stratix V device.
The 2x and 4x variations do not support fallback to 1x or 2x mode. You must know
whether the IP core has a 1x, 2x, or 4x link partner and configure the FPGA
accordingly. If fallback is required, the FPGA can be programmed with a 2x or 4x
variation by default and then reprogrammed to a 1x (or 2x) configuration under
system control after failure to synchronize in the original mode.