Question

14.3.4 - What signal is sent in period 9 if a slave on the I2C bus has the same slave address as was sent by the master in periods 1 to 7?

Question 4 options:

	The slave address
	NACK
	ACK
	The data

14.3.6 - What field is sent in period 8 of an I2C message?

Question 5 options:

	NACK
	The STOP condition
	The read/write bit
	ACK

Answer 1

Start A6 A5 A4 A3 A2 A1 A0    ACK/NACK  

Above is the I2C data sent by the master to communicate with the slave

Start is the I2C packet start condition which is sent by master by pulling SDA line HIGH to LOW while the SCL line is HIGH.

A6-A0 is the 7bit slave address

is  Read / write bit for slave ( 0 for writ operation , 1 for read operation )

ACK/NACK    is the acknowledgement bit which represents whether the slave has processed the sent data successfully or not.

Ans 1 . I2C transmission starts by sending the start condition by the master , then master sends the 7-bit slave address with which it wants to communicate .If the address sent by the master matches with any of the slave it send the response to the master as ACK bit which is the 9th period or 9th bit in the process

Hence correct ans is ACK bit ,

Ans 2 . From the above given I2C it is clear the the 8th period is    bit

Hence correct option is     bit .