Question

If the DIR pin of the isolation chip is high, then it enters into

(a) receiver mode

(b) virtual access mode

(c) transmit or receive mode

(d) transmit mode

The question was posed to me during an interview.

My question is based upon Design of a PC Based Multimicroprocessor System topic in section Multimicroprocessor Systems of Microprocessor

Answer 1

Correct option is (d) transmit mode

For explanation I would say: If the DIR pin of the isolation chip is high, then it enters into transmit mode and if it is 0 then the isolation chip enters into receiver mode.