Opencore plus evaluation, Opencore plus time-out behavior – Altera CPRI IP Core User Manual
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1–10
Chapter 1: About This MegaCore Function
Installation and Licensing
CPRI MegaCore Function
December 2013
Altera Corporation
User Guide
OpenCore Plus Evaluation
With the Altera free OpenCore Plus evaluation feature, you can perform the following
actions:
■
Simulate the behavior of a megafunction (Altera IP core or AMPP
SM
megafunction) in your system using the Quartus II software and Altera-supported
VHDL and Verilog HDL simulators
■
Verify the functionality of your design and evaluate its size and speed quickly and
easily
■
Generate time-limited device programming files for designs that include Altera IP
cores
■
Program a device and verify your design in hardware
OpenCore Plus Time-Out Behavior
OpenCore Plus hardware evaluation supports the following two operation modes:
■
Untethered—the design runs for a limited time.
■
Tethered—requires a connection between your board and the host computer. If
tethered mode is supported by all megafunctions in a design, the device can
operate for a longer time or indefinitely.
All megafunctions in a device time out simultaneously when the most restrictive
evaluation time is reached. If there is more than one megafunction in a design, a
specific megafunction's time-out behavior might be masked by the time-out behavior
of the other megafunctions.
1
For Altera IP cores, the untethered time-out is 1 hour; the tethered time-out value is
indefinite.
Your design stops working after the hardware evaluation time expires.
The CPRI IP core then behaves as if the
reset
and
cpu_reset
signals are asserted: the
CPRI link and the CPU interface reset. The transceivers do not reset, because the
transceiver quad might be shared with other designs, IP cores, and megafunctions.
The CPRI IP core cannot achieve frame synchronization, and cannot participate in
further CPRI communication.
f
For information about installation and licensing, refer to
. For information about the OpenCore Plus evaluation feature, refer to