I2C

Embedded System

This set of Embedded Systems Questions and Answers for Experienced people focuses on “I2C-II”.

1. Which of the following indicates the type of operation that the master requests?
a) address value
b) initial value
c) terminal count
d) first byte

2. How can both single byte and the double byte address slave use the same bus?
a) extended memory
b) extended address
c) peripheral count
d) slave bus

3. Which counter selects the next register in the I2C?
a) auto-incrementing counter
b) decrementing counter
c) auto-decrementing counter
d) terminal counter

4. Which is an efficient method for the EEPROM?
a) combined format
b) auto-incrementing counter
c) register set
d) single format

5. Which of the following uses two data transfers?
a) auto-incrementing counter
b) auto-decrementing counter
c) combined format
d) single format

6. Which of the following is efficient for the small number of registers?
a) auto-incrementing counter
b) auto-decrementing counter
c) combined format
d) single format

7. Which can determine the timeout value?
a) polling
b) timer
c) combined format
d) watchdog timer

8. How is bus lockup avoided?
a) timer and polling
b) combined format
c) terminal counter
d) counter

9. Which of the following can determine if two masters start to use the bus at the same time?
a) counter detect
b) collision detect
c) combined format
d) auto-incremental counter

10. Which ports are used in the multi-master system to avoid errors?
a) unidirectional port
b) bidirectional port
c) multi directional port
d) tridirectional port

11. What does I2C stand for?
a) inter-IC
b) intra-IC
c) individual integrated chip
d) intel IC

12. Which company developed I2C?
a) Intel
b) Motorola
c) Phillips
d) IBM

13. Which of the following is the most known simple interface?
a) I2C
b) Serial port
c) Parallel port
d) SPI

14. Which are the two lines used in the I2C?
a) SDA and SPDR
b) SPDR and SCL
c) SDA and SCL
d) SCL and status line

15. Which of the following developed P82B715?
a) Philips
b) Intel
c) IBM
d) Motorola

16. Which pin provides the reference clock for the transfer of data?
a) SDA
b) SCL
c) SPDR
d) Interrupt pin

17. Which of the following are the three hardware signals?
a) START, STOP, ACKNOWLEDGE
b) STOP, TERMINATE, END
c) START, SCL, SDA
d) STOP, SCL, SDA

18. Which of the following performs the START signal?
a) master
b) slave
c) CPU
d) memory

19. Which of the following are handshake signals?
a) START
b) STOP
c) ACKNOWLEDGE
d) START and STOP

20. A packet is also referred to as
a) postcard
b) telegram
c) letter
d) data

21. Which of the following byte performs the slave selection?
a) first byte
b) second byte
c) terminal byte
d) eighth byte

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