同©大学 TONGJI UNIVERSITY Avoidance of cycles Each column should have at least one stable state to make the circuit stable
Avoidance of cycles ⚫Each column should have at least one stable state to make the circuit stable
同大学 TONGJI UNIVERSITY Design of asynchronous sequential logic Procedures and principles
Design of asynchronous sequential logic Procedures and principles
同榜大学 TONGJI UNIVERSITY Principles and procedures ●( Obtain the state transition table according to the logic. oSimplify the states using the maximum compatible states concept. oState number assignment(race free) OUse K-map to get the logic expression for the next state output
Principles and procedures ⚫Obtain the state transition table according to the logic. ⚫Simplify the states using the maximum compatible states concept. ⚫State number assignment (race free) ⚫Use K-map to get the logic expression for the next state output
同桥大学 Simplification of the states for synchronous logic ●Maximum compatible OCompatible states OMaximum compatible
Simplification of the states for synchronous logic ⚫Maximum compatible Compatible states Maximum compatible
同大学 TONGJI UNIVERSITY DG 00 01 11 10 C,- @,0 b,- b a,- ⑥1 e,- ⊙，0 a,- d,- C,- b,- d,0 f.- b, e,1 ①1 a,- Fig.9-16 Primitive Flow Table 2002 Prentice Hall,Inc. M.Morris Mano DIGITAL DESIGN,3e