Tag
transmission lines
2 articles.
- How to terminate a clock line: series, parallel or nothing
When a clock line needs no termination, when one series resistor at the driver is enough, and the exact networks LVDS, LVPECL and HCSL clocks need.
- Reflections you can see: when a trace becomes a transmission line
The rule is not length, it is rise time. TI's rule is four times the one-way delay: below it a trace is a wire, above it each unterminated end is a mirror.