Altera IP Compiler for PCI Express - Manual (Page 237)

Chapter 15: Testbench and Design Example 15–5
Root Port Testbench
August 2014 Altera Corporation IP Compiler for PCI Express User Guide
■ _example_rp_pipen1b—This is the example root port design that
includes your variation of the IP core. For more information about this module,
refer to
“Root Port Design Example” on page 15–22 .
■ altpcietb_bfm_ep_example_chaining_pipen1b —This is the endpoint PCI
Express model. The EP BFM consists of a Gen2 ×8 IP core endpoint connected to
the chaining DMA design example described in the section
“Chaining DMA
Design Example” on page 15–6 . Table 15–2 shows the parameterization of the
Gen2 ×8 IP core endpoint.
■ altpcietb_pipe_phy —There are eight instances of this module, one per lane. These
modules connect the PIPE MAC layer interfaces of the root port and the endpoint.
The module mimics the behavior of the PIPE PHY layer to both MAC interfaces.
■ altpcietb_bfm_driver_rp —This module drives transactions to the root port BFM.
This is the module that you modify to vary the transactions sent to the example
endpoint design or your own design. For more information about this module, see
“Test Driver Module” on page 15–18 .
The testbench has routines that perform the following tasks:
■ Generates the reference clock for the endpoint at the required frequency.
■ Provides a reset at start up.
Table 15–2. Gen2 ×8 IP core Endpoint Parameterization
Parameter Value
Lanes 8
Port Type Native Endpoint
Max rate Gen2
BAR Type
BAR1:0—64–bit Prefetchable Memory, 256 MBytes–28 bits
Bar 2:—32–Bit Non-Prefetchable, 256 KBytes–18 bits
Device ID 0xABCD
Vendor ID 0x1172
Tags supported 32
MSI messages requested 4
Error Reporting
Implement ECRC check,
Implement ECRC generations
Implement ECRC generate and forward
Maximum payload size 128 bytes
Number of virtual channels 1