Editing Register-transfer level (section)

===Advantages of doing power estimation at RTL or architectural level===
* Designers use a register-transfer level (RTL) description of the design to make optimizations and trade-offs very early in the design flow.
*The presence of functional blocks in an RTL description makes the complexity of architectural design much more manageable even for large chips because RTL has granularity sufficiently larger than gate- or circuit-level descriptions.