EEL6323-S11-HLec017-Adders-2spp

EEL6323-S11-HLec017-Adders-2spp - Lecture 17: Adders...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Lecture 17: Adders Single-bit Addition Carry-Ripple Adder Carry-Skip Adder Carry-Select Adder Carry-Lookahead Adder Tree Adder Reading: Chapter 10, W&H Carry Generation and Propagation Define 3 new variables that depend only on A and B – Generate: C out = 1 independent of C •G = – Propagate: C out = C •P = – Kill: C out = 0 independent of C •K =
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Carry Chain Carry of Mirror Adder Manchester Carry Chain Group PG Logic (C i =G i:0 ) Sum Logic Bitwise PG Logic
Background image of page 2
3 PG network for Manchester Carry Chain Manchester Carry Chain P i + 1 G i + 1 C i Inverter/Sum Row Propagate/Generate Row P i G i C i - 1 C i + 1 V DD GND R 1 C 1 R 2 C 2 R 3 C 3 R 4 C 4 R 5 C 5 R 6 C 6 Out M 0 M 1 M 2 M 3 M 4 M C Discharge Transistor 12 3 4 5 6
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Carry-Bypass Adder FA FA FA FA P 0 G 0 P 1 G 1 P 2 G 2 P 3 G 3 C 3 C 2 C 1 C 0 C in C 3 Mult ip l e xer BP=P o P 1 P 2 P 3 FA FA FA FA P 0 G 0 P 1 G 1 P 2 G 2 P 3 G 3 C 3 C 2 C 1 C 0 C in CSA Manchester Stage
Background image of page 4
5 Carry-Bypass Adder (cont.) Carry propagation Setup
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

EEL6323-S11-HLec017-Adders-2spp - Lecture 17: Adders...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online