MI QUIZ

What is the function of the receiver section (RxD) in the 8251A UART?

• a) Converts parallel data to serial form

• b) Converts serial data to parallel form

• c) Generates the baud rate clock

• d) Checks for errors only

What is used to control the baud rate in the 8251A UART?

• a) Internal clock

• b) External clock signal at RxC and TxC

• c) Data register

• d) Status register

What is the first step in initializing the 8251A USART?

• (A)

  Load the Mode Control Register

• (B)

  Set the Command Register

• (C)

  Check the Status Register

• (D)

  Perform a hardware reset

Which register is responsible for setting the baud rate, data bits, and parity in the 8251A?

• (A)

  Command Register

• (B)

  Mode Control Register

• (C)

  Status Register

• (D)

  Data Register

What is the primary function of the Baud Rate Generator in a UART?

• (A)

  To control the speed of data communication by setting the transmission rate
  

• (B)

  To enable even parity checking during transmission

• (C)

  To select the number of stop bits in data frames

• (D)

  To configure the number of data bits in each frame

In the Line Control Register (LCR) of a UART, which bits are used to configure the number of data bits in a data frame?

• (A) Bits STB and PEN

• (B)Bits PEN and EPS
  

• (C) Bits WLS0 and WLS1

• (D) Bits EPS and STB