USART Asynchronous Mode - MCQs with answers
USART Asynchronous Mode - MCQs with answers1. Where should the value of TX9 bit be loaded during the 9 bit transmission in an asynchronous mode?
d. All of the aboveView Answer / Hide Answer2. What is the purpose of a special function register SPBRG in USART ?
a. To control the operation associated with baud rate generation
b. To control an oscillator frequency
c. To control or prevent the false bit transmission of 9th
d. All of the aboveView Answer / Hide Answer
3. Why is the flag bit TXIF tested or examined in the PIR1 register after shifting all the data bits during the initialization process of USART in asynchronous mode?
ANSWER: a. To control the operation associated with baud rate generation
a. For ensuring the transmission of byte
b. For ensuring the reception of byte
c. For ensuring the on-chip baud rate generation
d. For ensuring the 9th
bit as a parityView Answer / Hide Answer
4. How is the baud rate specified for high-speed (BRGH = 1) operation in an asynchronous mode ?
ANSWER: a. For ensuring the transmission of byte
/ 8 (X +1 )
/ 16 (X +1 )
/ 32 (X +1 )
/ 64 (X +1 ) View Answer / Hide Answer
ANSWER: b. FOSC / 16 (X +1 )