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- Question
The complex programmable logic device (CPLD) contains several PAL-type simple programmable logic devices (SPLDs) called:
Options- A. macrocells
- B. microcells
- C. AND/OR arrays
- D. fuse-link arrays
- Correct Answer
- macrocells
- 1. Each programmable array logic (PAL) gate product is applied to an OR gate and, if combinational logic is desired, the product is ORed and then:
Options- A. the polarity fuse is restored
- B. sent to an inverter for output
- C. sent immediately to an output pin
- D. passed to the AND function for output Discuss
- 2. What is the defining difference between microprocessor/DSP systems and other digital systems?
Options- A. The digital system follows a programmed sequence of instructions that the designer specified.
- B. The microprocessor follows a programmed sequence of instructions that the designer specified.
- C. The digital system is faster.
- D. The microprocessor/DSP is faster. Discuss
- 3. Which of the following testing procedures uses the JTAG IEEE standard?
Options- A. Bed-of-nails
- B. Flying probe
- C. EXTEST
- D. Boundary scan Discuss
- 4. The Altera MAX 7000 series ________.
Options- A. uses an E2PROM process technology
- B. can have between 2 and 16 LABS and I/O control blocks
- C. is available with DC supply voltages between 2.5 V and 5 V
- D. all of the above Discuss
- 5. Now many times can a GAL be erased and reprogrammed?
Options- A. 0
- B. At least 100
- C. At least 1000
- D. Over 10,000 Discuss
- 6. Which is a mode of operation of the GAL16V8?
Options- A. Simple mode
- B. Complex mode
- C. Registered mode
- D. All of the above Discuss
- 7. The problem of interfacing IC logic families that have different supply voltages (VCC's) can be solved by using a:
Options- A. level-shifter
- B. tristate shifter
- C. decoupling capacitor
- D. pull-down resistor Discuss
- 8. Why is the operating frequency for CMOS devices critical for determining power dissipation?
Options- A. At low frequencies, power dissipation increases.
- B. At high frequencies, the gate will only be able to deliver 70.7 % of rated power.
- C. At high frequencies, charging and discharging the gate capacitance will draw a heavy current from the power supply and thus increase power dissipation.
- D. At high frequencies, the gate will only be able to deliver 70.7 % of rated power and charging and discharging the gate capacitance will draw a heavy current from the power supply and thus increase power dissipation. Discuss
- 9. Which of the following logic families has the shortest propagation delay?
Options- A. CMOS
- B. BiCMOS
- C. ECL
- D. 74SXX Discuss
- 10. PMOS and NMOS ________.
Options- A. represent MOSFET devices utilizing either P-channel or N-channel devices exclusively within a given gate
- B. are enhancement-type CMOS devices used to produce a series of high-speed logic known as 74HC
- C. represent positive and negative MOS-type devices, which can be operated from differential power supplies and are compatible with operational amplifiers
- D. None of the above Discuss
Programmable Logic Device problems
Search Results
Correct Answer: sent to an inverter for output
Correct Answer: The digital system follows a programmed sequence of instructions that the designer specified.
Correct Answer: Boundary scan
Correct Answer: all of the above
Correct Answer: At least 100
Correct Answer: All of the above
Correct Answer: level-shifter
Correct Answer: At high frequencies, charging and discharging the gate capacitance will draw a heavy current from the power supply and thus increase power dissipation.
Correct Answer: ECL
Correct Answer: represent MOSFET devices utilizing either P-channel or N-channel devices exclusively within a given gate
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