vijay82
Member level 2
So it turns out that level shifters are NOT required between 2 nearby same-voltage power domains which are themselves part of a top-level power domain having a different voltage, because apparently electrical design rules in the top-level PD will not be violated. However if the same 2 power domains were far apart, the net passing between the 2 PDs will have to be buffered in order to meet design rules of the top-level PD and thus level shifters are required. Source: An ASIC Low Power Primer (Chadha/Bhasker)
The question is, weren't buffers supposed to increase signal strength, since when were they inserted to fix "electrical design rules"? What are these rules anyway in this context?
The question is, weren't buffers supposed to increase signal strength, since when were they inserted to fix "electrical design rules"? What are these rules anyway in this context?
