LFE2M50E-PS-EVN Lattice, LFE2M50E-PS-EVN Datasheet - Page 43

• Manufacturer Part Number: LFE2M50E-PS-EVN
• Description: Programmable Logic IC Development Tools LatticeECP2M PCI Express Dev Kit
• Manufacturer: Lattice

Specifications of LFE2M50E-PS-EVN

• Rohs: yes
• Tool Is For Evaluation Of: LatticeECP2M-50
• Factory Pack Quantity: 1

Running the PCI Express Throughput Demo
Running the Throughput Demo
LatticeECP2M PCI Express Development Kit User’s Guide
Figure 9: PCI Express Throughput Block Diagram
data plane transfers the data from the SFIF to the PC memory. Figure 9 below
shows the relationship of the hardware and software components of the
demo. For more details on SFIF IP, register mapping and related topics, see
the documents IPUG75 and UG07 referred to in the section, “Related
Documentation” on page 3.
The Throughput demo software allows you to set up different types of data
transfers to understand the PCI Express link. You can select the type of
transfer to perform (e.g., write, read, and write/read) as well as how many
bytes of data to transfer. You also have the option of selecting the size of the
TLP in which to perform the transfer.
Note:
The PCIe Throughput demo design requires at least 16 posted credits to use
128-byte write TLPs. This requirement is to optimize the throughput of the
PCIe link. You can determine the amount of posted credits for the given slot in
the GUI. If the posted credits are less than 32, then 64-byte write TLPs are the
largest size supported.
If you experience any problems running this demo, please refer to Appendix
B, “Troubleshooting” on page 63.
This section describes how to run the PCIe Throughput demo after
installation. You can access the demo from the Windows Start Menu.
To run the PCIe Throughput demo from you PC:
From the Windows desktop, choose Start > Programs > LatticeECP2M
PCI Express Development Kit > ECP2M Thruput.
The graphical user interface opens the PCIe Throughput demo software
with the Device Info tab activated as shown in Figure 10 below.
Running the Throughput Demo
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