ECE243 Practice Question Website


Main Assembly Programming Input/Output Memory Computer Architecture Advanced Topics

Input/Output Questions





Question 3

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.

If the receiving device is configured at 56000 baud, can the receiver ever tell that the baud rates are different over the course of a multiple character message transmission?

When or why not?

Answer

Yes

Full Solution

Yes: By looking at the stop bit and looking for framing errors