experiment 2

Experiment 2 Name : Rohan Makwana (12MECV16)

Title :Design, simulate and synthesize the following components using all

different possible modelling styles.

A. All gates

B. All latches

C. All flipflops

D. Master- slave flipflops.

A. All gates :

• VHDL CODE:

• RTL Schematics:

• Timing Diagram:

2

B. All latches:

• D Latch :

• VHDL Code for D latch:

• a

• RTL Schematics:

• Timing Diagram:

• SR Latch:

• VHDL CODE FOR SR LATCH (Behaviour Model):

• RTL Schematic :

• Timing Diagram:

1

S R Q(+)

0 0 Remains same (previous)

state

0 1 0

1 0 1

1 1 Invalid State

A : S=0 and R=0 so, output should remains on same state.

B: S= 1 and R= 1 so, we get Q= 0 and also Q' = 0 -- Invalid operation.

C: S = 0 and R= 1 so, Output Q=0 and Q' = 1.

D: S=1 and R=0 so, Q=1 and Q'=0.

A B C D

• VHDL Code for SR Latch (Structural):

• RTL Schematic:

• Timing diagram:

• D Flipflops :

• VHDL Code :

• RTL Schematic:

• Timing diagram:

1. Simple D FF (not considering preset and clear state)

2. If Preset = 1 then Q = 1 and Q' = 0.

3. If Clear = 1 then Q = 0 and Q' = 1.

• SR flipflop :

• RTL Schematic:

• Timing diagram:

• JK flipflop :

• VHDL Code:

• RTL Schematic:

• Timing diagram:

• T flipflop:

• VHDL Code:

• RTL Schematic :

• Timing diagram:

• Master Slave JK flipflop :

• VHDL Code :

• RTL Schematic :

• Timing Diagram :

• Master slave D flip flop :

• VHDL Code :

• RTL Schematic :

• Timing Diagram :

• Master slave D flip flop (Structural)

• VHDL Code :

• RTL Schematic :

• Timing Diagram :