Lecture_14 - ECE 331 Digital System Design Multiplexers...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 331 – Digital System Design Multiplexers (Lecture #14)
Background image of page 1

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

View Full DocumentRight Arrow Icon
Multiplexer A multiplexer switches (or routes) data from 2 N inputs to the output, where N is the number of select inputs. A multiplexer (mux) is a digital switch.
Background image of page 2
(a) Graphical symbol f s w 0 w 1 0 1 (b) Truth table 0 1 f f s w 0 w 1 (c) Sum-of-products circuit s w 0 w 1 A 2-to-1 Multiplexer s = 0 selects w s = 1 selects w F = (w 0 .s’) + (w 1 .s) 2 inputs 1 output 1 select
Background image of page 3

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

View Full DocumentRight Arrow Icon
f s 1 w 0 w 1 00 01 (b) Truth table w 0 w 1 s 0 w 2 w 3 10 11 0 0 1 1 1 0 1 f s 1 0 s 0 w 2 w 3 f (c) Circuit s 1 w 0 w 1 s 0 w 2 w 3 (a) Graphic symbol A 4-to-1 Multiplexer F = (w 0 .s 1 s 0 ) + (w 1 .s 1 s 0 ) + (w 2 .s 1 s 0 ) + (w 3 .s 1 s 0 ) Two select signals
Background image of page 4
0 w 0 w 1 0 1 w 2 w 3 0 1 f 0 1 s 1 s A 4-to-1 Mux from 2-to-1 Muxes Select signal for first level of decoders Select signal for second level of decoders
Background image of page 5

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

View Full DocumentRight Arrow Icon
w 8 w 11 s 1 w 0 s 0 w 3 w 4 w 7 w 12 w 15 s 3 s 2 f A 16-to-1 Mux from 4-to-1 Muxes Select signals (2) for second level of decoders Select signals (2) for first level of decoders
Background image of page 6
VHDL Implementation of a Multiplexer
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 22

Lecture_14 - ECE 331 Digital System Design Multiplexers...

This preview shows document pages 1 - 8. Sign up to view the full document.

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