ICTP Latin-American Advanced Course on FPGADesign for Scientific Instrumentation. 19 November - 17 December, 2012.

Transcription

1 ICTP Ltin-Americn Advnced Coure on FPGADeign for Scientific Intrumenttion 19 Novemer - 17 Decemer, 2012 Digitl Deign BAZARGAN SABET Pirouz Univerite Pierre Et Mrie Curie (Vi) Lip6, Deprtement Aim 4. Plce Juieu Pri Cedex 05 FRANCE

2 Outline Digitl CMOS deign Boolen lger Bic digitl CMOS gte Comintionl nd equentil circuit Coding - Repreenttion of numer Pirouz Bzrgn Set ICTP Octoer 2009

3 Bic CMOS Gte How to implement Boolen function in CMOS technology? Which functionlitie re ville Pirouz Bzrgn Set ICTP Octoer 2009

4 Bic CMOS Gte N-MOS trnitor G D D G S S W Si N+ L N+ P- Pirouz Bzrgn Set ICTP Octoer 2009

5 Bic CMOS Gte P-MOS trnitor G S D G S D Si P+ N- P+ P- Pirouz Bzrgn Set ICTP Octoer 2009

6 Bic CMOS Gte In digitl circuit MOS trnitor cn e een Switch G N-MOS P-MOS D D S S G G G S S D D D = S when G = 1 D = S when G = 0 Pirouz Bzrgn Set ICTP Octoer 2009

7 Bic CMOS Gte When driving, MOS trnitor cn e een Reitor Conductnce W L For the me ize, P-MOS i twice more reitive thn n N-MOS Pirouz Bzrgn Set ICTP Octoer 2009

8 Bic CMOS Gte The N-MOS nd P-MOS re not exctly ymmetricl A N-MOS i good trnmitter of 0 A P-MOS i good trnmitter of 1 Pirouz Bzrgn Set ICTP Octoer 2009

9 Bic CMOS Gte y = Notx S G D D 2W/L y Dul CMOS gte x G S W/L x y Pirouz Bzrgn Set ICTP Octoer 2009

10 Bic CMOS Gte y = x 1.x 2 y x 1 x 2 x 2 x 1 y Pirouz Bzrgn Set ICTP Octoer 2009

11 Bic CMOS Gte Deign of dul gte P network The P-network mut e the dul of the N-network x i y Serie Prllel Prllel Serie N network Tke cre of the ize of trnitor Pirouz Bzrgn Set ICTP Octoer 2009

12 Bic CMOS Gte To et the output to 0 pth h to e creted through the N network A erie of N-trnitor mut e conducting Πx i = 1 P network x i N network y Only negtive (inverting) function cn e creted Pirouz Bzrgn Set ICTP Octoer 2009

13 Bic CMOS Gte Implementing Boolen function with CMOS gte? The function mut e inverting in regrd of ll the vrile Put the function in the form of f = g Deign the N-network of g Pirouz Bzrgn Set ICTP Octoer 2009

14 Bic CMOS Gte Implementing Boolen function with CMOS gte? In the expreion of g ech. re two pth in erie In the expreion of g ech + re two pth in prllel The P-network i the dul network of the N-network Avoid putting more thn 3 trnitor in erie Pirouz Bzrgn Set ICTP Octoer 2009

15 Bic CMOS Gte Exmple : f = + (.c) 2W/L c f = + (+c) f =. (+c) g =. (+c) W/L W/L 2W/L W/L c f W/L Pirouz Bzrgn Set ICTP Octoer 2009

16 Bic CMOS Gte Some gte : Inverter : f = 4 W/L Nnd : f =. 4 W/L Nor : f = + y W/L W/L Pirouz Bzrgn Set ICTP Octoer 2009

17 Bic CMOS Gte Some gte : Multiplexer : f =. +. y Pirouz Bzrgn Set ICTP Octoer 2009

18 Bic CMOS Gte Some gte : Multiplexer : f = c d c d Pirouz Bzrgn Set ICTP Octoer 2009

19 Bic CMOS Gte Some gte : Multiplexer : f =. +. Pirouz Bzrgn Set ICTP Octoer 2009

20 Bic CMOS Gte Pirouz Bzrgn Set ICTP Octoer 2009

21 Bic CMOS Gte If = 1 If = 0 f = f i not defined f f Tri-tte driver Pirouz Bzrgn Set ICTP Octoer 2009

22 Bic CMOS Gte Some gte : Multiplexer : f Pirouz Bzrgn Set ICTP Octoer 2009

23 Bic CMOS Gte Some gte : Multiplexer : c d f Pirouz Bzrgn Set ICTP Octoer 2009

24 Bic CMOS Gte Some gte : If = 1 If = 0 f f = f i not defined If = 0 then f = 0 If = 1 then f = 1 - P-trnitor Pirouz Bzrgn Set ICTP Octoer 2009

25 Bic CMOS Gte Some gte : If = 0 If = 1 f f = f i not defined If = 1 then f = 1 If = 0 then f = 0 + P-trnitor Pirouz Bzrgn Set ICTP Octoer 2009

26 Bic CMOS Gte Some gte : If = 1 If = 0 f f = f i not defined If = 0 then f = 0 If = 1 then f = 1 CMOS Switch Pirouz Bzrgn Set ICTP Octoer 2009

27 Bic CMOS Gte Some gte : Multiplexer : f =. +. f Pirouz Bzrgn Set ICTP Octoer 2009

28 Bic CMOS Gte Some gte : Multiplexer : f =. +. f Pirouz Bzrgn Set ICTP Octoer 2009

29 Bic CMOS Gte Some gte : Nxor : f =. +. y I need nd Pirouz Bzrgn Set ICTP Octoer 2009

30 Bic CMOS Gte Some gte : Nxor Xor with P-trnitor : f =. +. f f Pirouz Bzrgn Set ICTP Octoer 2009