What is the directional nature of two active wires SDA & SCL usually adopted in I2C Bus for carrying the information between the devices ?
Bi-directional
100
In SPI Slave Data In pin is also called______
MOSI
100
What is the function of CAN Physical layer ?
Encoding and Decoding of transfer data
100
What is OTG in USB?
On The Go, it doesn't require PC
200
SDA = high to low and SCL = 0, indicates _________ in I2C.
Interrupts are serviced
200
What is the limitation of parity bit in UART?
It check only single bit error
200
What is the voltage across CAN High and CAN low pin When Data have being Transmitted?
CAN_H=3.75.,
CAN_L=1.25
200
Name 4 USB pins?
D+,D-,VCC,GND
300
Why I2C bus contains Pull up Registers?
Both SDA and SCL are Open drain or Open collector
300
What is the meaning space in Rs232 signal ?
zero
300
What is the use of Message identifier bits in CAN frames
it Contains Frame ID and Priority
300
Name three data transfer types used by USB with example
BULK, Isochronous, Control,interrupt
400
SDA = high to low and SCL = High, indicates _________ in I2C.
Stop of Data transfer
400
What is Max232?
it convert UART signal into RS 232 signal
400
What is the function of RTR bit in CAN?
Remote Transmission request
RTR= 1 (data is included in message)
0= remote frame request for data
400
Name three USB Packets
Token,Data, Handshaking Packets
500
Which potential mode of operation indicate the frequent sending of byte to the slave corresponding to the reception of an acknowledge signal when it becomes desirable for the master to write to the slave during data transmission in I2C bus?
Master in master-transmit mode & Slave in slave-receive mode
500
In rs232 logic ‘1’ is represented with voltage between ______