
VHDL—Packages, Sub Programs, and Sequential Circuits 16.15
the sequential circuit. It means Y
0
, Y
1
, Y
2
, … are also the inputs to memory
section of the sequential circuit.
3. Inputs of a combinational circuit section of a sequential circuit are same as
Q
0
, Q
1
, Q
2
, … are represented by a logic vector Q. The indices of the array
are 0, 1, 2, …, respectively.
Outputs from combinational circuit section of a sequential circuit Y
0
, Y
1
,
Y
2
, … are represented by a logic vector Y. The indices of the array are 0, 1, 2, …,
respectively.
A general sequential circuit consists of Logic_StatesCircuit_SeqC component.
The Output states are given as inputs Y