The function, ‘data bus tristated’ is performed when
A. CS(active low) = 1
B. CS(active low) = 0
C. CS(active low) = 0, RD(active low) = 1, WR(active low) = 1
D. CS(active low) = 1 OR CS(active low) = 0, RD(active low) = 1, WR(active low) = 1
Answer:D
The function, ‘data bus tristated’ is performed when
A. CS(active low) = 1 B. CS(active low) = 0 C. CS(active low) = 0, RD(active low) = 1, WR(active low) = 1 D. CS(active low) = 1 OR CS(active low) = 0, RD(active low) = 1, WR(active low) = 1
Explanation: The data bus is tristated when chip select pin=1 or chip select pin=0 and read and write signals are high i.e 1.