SPI Interview Questions
1)Who designed SPI ?
SPI was designed by Motorala.
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2)What is Full Form of SPI ?
Serial Peripheral Interface
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3)How many wires are used in SPI Communication ?
SPI is 4 wired communication protocol.
a)Master out,Slave in (MOSI)
b)Master in,Slave out(MISO)
c)Serial Clock(SCLK)
d)Chip Select/Slave Select(CS/SS)
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4)Is SPI Half Duplex (or) Full Duplex ?
Full Duplex
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5)Is SPI Synchronous (or) Asynchronous Communication ?
Synchronous Communication
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6)What is Standard Speed of SPI ?
Speed of SPI is up to 10 Mbps.
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7)What is the main feature of SPI Communication ?
SPI is Multi-Slave Communication Protocol.
_______________________________________________________________
8)What is the byte order in SPI ?
LSB First (or) MSB First.It depends on SPI device connected to master.
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9)How many slaves can be connected in SPI ?
Maximum number of slaves are limited by the hardware.It is not restricted in the
protocol.
__________________________________________________________________
10)Name some SPI Devices ?
1)Micro SD Card
2)Digital Pressure Sensor
3)Digital Accelerometer
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11)What is the role of shift registers in SPI Communication ?
In SPI,shift are used to transfer the data to slave using the MOSI bus and at the
same time receiving the dummy data from MISO bus and viceversa.
_____________________________________________________________________
12)What is Clock Polarity and Clock Phase in SPI ?
Clock Polarity represents base value of the clock.
Clock Phase represents on which edge data to be sampled.
______________________________________________________________________
13)What are the Advantages of SPI ?
1)Full Duplex Communication.
2)Simple Hardware Interfacing.
3)Not Limited to 8 bits word in case of bit transferring
4)No Arbitration.
5)No Start and Stop bit,so that data can be transferred without any disturbance.
_________________________________________________________________________
14)What are the Dis Advantages of SPI ?
1)No form of Error Checking,
2)Uses four wire.
3)No Acknowledgement
4)It allows only for a single master.
__________________________________________________________________________
15)What are the Applications of SPI ?
1)SPI Bus is commonly used for flash memory,sensor,Real Time Clock.
2)This bus is commonly used to send data between micro controllers to small
peripherals like LCD Display,ADC.
3)Secure Digital Card.
___________________________________________________________________________
1)Who designed SPI ?
SPI was designed by Motorala.
______________________________________________________________
2)What is Full Form of SPI ?
Serial Peripheral Interface
______________________________________________________________
3)How many wires are used in SPI Communication ?
SPI is 4 wired communication protocol.
a)Master out,Slave in (MOSI)
b)Master in,Slave out(MISO)
c)Serial Clock(SCLK)
d)Chip Select/Slave Select(CS/SS)
_______________________________________________________________
4)Is SPI Half Duplex (or) Full Duplex ?
Full Duplex
_______________________________________________________________
5)Is SPI Synchronous (or) Asynchronous Communication ?
Synchronous Communication
_________________________________________________________________
6)What is Standard Speed of SPI ?
Speed of SPI is up to 10 Mbps.
_________________________________________________________________
7)What is the main feature of SPI Communication ?
SPI is Multi-Slave Communication Protocol.
_______________________________________________________________
8)What is the byte order in SPI ?
LSB First (or) MSB First.It depends on SPI device connected to master.
_________________________________________________________________
9)How many slaves can be connected in SPI ?
Maximum number of slaves are limited by the hardware.It is not restricted in the
protocol.
__________________________________________________________________
10)Name some SPI Devices ?
1)Micro SD Card
2)Digital Pressure Sensor
3)Digital Accelerometer
___________________________________________________________________
11)What is the role of shift registers in SPI Communication ?
In SPI,shift are used to transfer the data to slave using the MOSI bus and at the
same time receiving the dummy data from MISO bus and viceversa.
_____________________________________________________________________
12)What is Clock Polarity and Clock Phase in SPI ?
Clock Polarity represents base value of the clock.
Clock Phase represents on which edge data to be sampled.
______________________________________________________________________
13)What are the Advantages of SPI ?
1)Full Duplex Communication.
2)Simple Hardware Interfacing.
3)Not Limited to 8 bits word in case of bit transferring
4)No Arbitration.
5)No Start and Stop bit,so that data can be transferred without any disturbance.
_________________________________________________________________________
14)What are the Dis Advantages of SPI ?
1)No form of Error Checking,
2)Uses four wire.
3)No Acknowledgement
4)It allows only for a single master.
__________________________________________________________________________
15)What are the Applications of SPI ?
1)SPI Bus is commonly used for flash memory,sensor,Real Time Clock.
2)This bus is commonly used to send data between micro controllers to small
peripherals like LCD Display,ADC.
3)Secure Digital Card.
___________________________________________________________________________
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