7
LatticeSC PCI Express x4 Evaluation Board
Lattice Semiconductor
User’s Guide
Figure 4. Device Information Dialog Box
6. Click the green
GO
button. This will begin the download process into the device. Upon successful download, the
device will be operational.
Configuration Status Indicators
(see Appendix A, Figure 7)
These LEDs indicate the status of configuration to the FPGA.
• D1 illuminated (red) – This indicates that the programming was aborted or reinitialized driving the INITN output
low.
• D4 illuminated (green) – This indicates the successful completion of configuration by releasing the open collector
DONE output pin.
• D11 illuminated (green) – Flashes to indicate TDI activity.
• D21 illuminated (red) – This indicates that PROGRAMN is low.
• D23 illuminated (red) – This indicates that GSRN is low.
PROGRAMN & RESETN
(see Appendix A, Figure 7)
These push-button switches assert/de-assert the logic levels on the PROGRAMN (SW5) and RESETN (SW4).
Depressing the button drives a logic level “0” to the device.
