ECE243 Practice Question Website


Main Assembly Programming Input/Output Memory Computer Architecture Advanced Topics

Input/Output Questions





Question 1

Two devices are connected by a asynchronous serial link (UART) as discussed in class and in the text and lab manual. For all parts of this question, the sender is configured at 28000 baud, 7 data bits, 2 stop bits. Note that ASCII codes are in Appendix E, page 791.
The sender device sends an ASCII code of ‘M’ to the other device.

Draw the logic level bit stream of this transmission including all the control bits and idle line levels before and after the transmission. Label each bit in the transmission. Reminder: The LSBit of the data is the first piece of data to be transmitted.

Answer

Transmited Bit stream as a graph