4–2. What are two common ways to configure or define logic to PLD programming so
ID: 1715783 • Letter: 4
Question
4–2. What are two common ways to configure or define logic to PLD programming software?
4–3. What does HDL stand for in the acronym VHDL?
4–4. List the six steps in the PLD design flow.
4–5. How many different ICs would it take to implement the following equations?
a) X = AB + BC
b) Y = AB + BC + C + D
4–6. How is pin 1 identified in the PLCC package style used for the PLD in Figure 4–4?
4–20. Define the purpose of the following three VHDL program segments:
(a) Library
(b) Entity
(c) Architecture
4–21. Write the VHDL entity declare for a three-input AND gate.
4–22. Write the VHDL architecture for a three-input AND gate
4–23. Draw the logic circuit to be implemented by the following VHDL architecture body:
ARCHITECTURE arc OF p4_23 IS
BEGIN
x < = (a AND (b OR c));
y < = (a OR NOT b) AND NOT (b AND c);
z < = NOT (b AND c) OR NOT (a OR c);
END arc;
Notch Pin Pin 84 in chip X (pin 73) Altera MAX EPM7128S A (pin 29) B (pin 30)-mmmmmmmmm C (pin 31) Figure 4-4 Implementing the equation X AB B Cusing a PLD.Explanation / Answer
4-2 The internal logic gates and connections of PLDs are two common ways to configure programming process.
4-3 HDL stand for Hardware Description Language.
4-4 List of six steps in the PLD design flow.
4-20 (b) Entity: Entity describes the interface to the model (inputs and outputs).
(c) Architecture: Architecture describe the behavior of the model.
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