Signal Integrity Issues
Signal Integrity
| Larry: | Signal Integrity measures how well a signal travels from one logic gate to another. If the signal on a wire is larger than a certain voltage threshold (say, 0.5 v.), then the gate interprets that signal as a logical “one.” If the signal is below that threshold, the gate decides that the signal is a “zero.” So, anything that disturbs the signal voltage level can cause an error.
Noise can reduce the signal voltage and increase the time to travel. It is similar to static on the radio and dropout on your cell phone. Signal Integrity Analysis (SIA) tools evaluate the effect of noise (from all sources) on the signal. This includes coupling between signals (crosstalk), and other noise on the chip. The SIA ... |
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