LFE2M50E-PS-EVN Lattice, LFE2M50E-PS-EVN Datasheet - Page 50

• 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
LatticeECP2M PCI Express Development Kit User’s Guide
Table 10: Run Test Page Feature Descriptions
Feature
NP_CA and P_CA
Report
5. Next, click on the View Memory tab to open the View Memory page.
Refer to graphic in Figure 12. Notice that this page allows you to inspect
the memory contents of the PC’s system memory buffer and the
rx_fifo to check for data integrity. See the descriptions of these sub tabs in
Table 11.
After inspecting this page, you can move on to the next chapter which
describes the PCIe DMA demos.
Information Description
Time spent waiting for the root complex to accept TLPs
is computed and displayed as a bar graph in percentage
of time waiting over time spent running. Normal efficient
operation should show a small percentage of time spent
waiting for credits and more time spent sending TLPs.
Counters record when the SFIF wants to send a MRd
but the credit available ports of the PCI Express core
indicates the root complex has not yet processed the
read requests. The PCI Express core is waiting to
accept an UpdateFC-NP freeing up Non-Posted credits
to send another MRd TLP.
Counters record when the SFIF wants to send a MWr
but the credit available ports of the PCI Express core
indicates the root complex has not yet processed the
sent write TLPs. The PCI Express core is waiting to
accept an UpdateFC-P freeing up Posted credits to send
another MWr TLP.
Logs all of the test information. The Report box provides
details about the test. In the Throughput mode this
report will be updated every second up to 10 seconds.
After 10 seconds the data is no longer updated in the
report box to prevent system load and excessive
resource usage during long duration tests (over night).
In the Cycles mode the report window is updated when
the test is complete.
Running the Throughput Demo
SFIF
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