USART - Reason for testing TXIF flag bit in PIR1 register

Q.  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?
- Published on 12 Nov 15

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 parity

ANSWER: For ensuring the transmission of byte

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