One common cause for this issue for iCE40 Ultraplus Breakout boards is failing to use the HW-USBN-2B cable as shown on page 43 of the tutorial. Here's a direct link to the document: http://www.latticesemi.com/view_document?document_id=52758 Unlike ...
Description: When opening Reveal Analyzer, signals will appear to reset or hang. The Reveal version in Radiant being used includes the following: 2023.2 SP1, 2024.1, 2024.1 SP1. Solution: This is a known issue and is planned to be fully fixed in ...
The DOPAD_DEL is the delay from the PADDO port to the IOPAD signal switching rail to rail and measured at mid point. It is dependent on several factors such as : 1. The drive strength : 8ma default 2. The slew rate. Note: As #1 and #2 increases, the ...
Radiant performs static timing analysis (STA) on reset pin/signals that are using Local Set/Reset (LSR). To use LSR, user need to make sure that the GSR-related strategy settings are False/OFF (Force GSR on Synthesis and Infer GSR on MAP). User also ...
To achieve 100% timing coverage, you must define the following constraints: 1) create_clock constraint on all your clock ports 2) create_generate_clocks on all nets/pins/ports 3) set_input_delay and set_output_delay on your input and output ports. ...