LFE2M50E-PS-EVN Lattice, LFE2M50E-PS-EVN Datasheet - Page 32

• 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 Basic Demo
Touring the PCIe Basic Demo Interface
LatticeECP2M PCI Express Development Kit User’s Guide
After opening the PCIe Basic demo software, this section will describe the
pages and features in the interface.
1. In the Device Info page, click on the Device Info sub tabs and observe
Table 3: Device Info Page Sub Tab Descriptions
Sub Tab Page
Driver Info
Config Regs
Capabilities Regs
Extended Regs
2. Now click on the 16 Seg tab to see the contents of the 16 Segment
3. In the 16 Segment Control page, click the Run button. Notice on the board
the structure of the information that is displayed in each. The following
table describes what information is available for viewing by clicking each
of the sub tabs that you can select and are located at the bottom of the
page dialog.
Control page. In this page, you will be running a demonstration LED
sequence and controlling the display on your board from this console. See
Figure 5, "PCIe Basic Demo 16 Segment Control Page" on page 25.
The 16-Segment Control page provides a way to interactively light
segments on the display. You can preset character sequences from this
page or select single characters and run them to light the display.
The states of the LED segments are converted to a 16-bit word value
(each segment is controlled by a bit) and written to the LED control
register in the GPIO portion of the IP in the FPGA. This demonstrates a
memory write across the PCI Express bus.
how the sequence of LED lights run in a certain pattern on the display.
The 16-segment display has two test modes. In the first mode
demonstrated here, a pre-set sequence of segments are lit and characters
are written to the display.
Information Description
Obtained from the Lattice solutions board PCI Config
space registers by the Lattice PCI Express driver when
the demo is started. Displays Windows resources
assigned to the device driver to access the solutions
board.
Displays the standard PCI Config type 0 registers with
each field annotated. Displaying this page causes the
driver to issue PCI Config Type 0 read requests and re-
displays the register values.
Displays the PCI Express capabilities structures that are
found in the register range 0x40 to 0xff. The applicable
bit-fields of registers are parsed and displayed in
readable format.
Displays PCI Express extended configuration registers
which are not used in this demo. These are inaccessible
through the PC.
Touring the PCIe Basic Demo Interface
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