What is the need for multiplexing the address bus and data bus how are they multiplexed?

What is the need for multiplexing the address bus and data bus how are they multiplexed?

Multiplexing is used to reduce the number of pins of 8085, which otherwise would have been a 48 pin chip. But because of multiplexing, external hardware is required to demultiplex the lower byte address cum data bus. The Pin no= 30 of 8085 is the ALE pin which stands for ‘Address Latch Enable’.

What is multiplexing how is it used in address and data bus?

The multiplexed address and data bus is the bus configuration that address pins are shared with DQ signals. By using the shared pins, total pin count is reduced compared to conventional products that use a separate address and data bus configuration. between multiplexed A/DQ and separate A/DQ products.

What is data bus multiplexing?

multiplexed bus A type of bus structure in which the number of signal lines comprising the bus is less than the number of bits of data, address, or control information being transferred between elements of the system.

What are the advantages and disadvantages of the multiplexed address data bus?

The advantage of time multiplexing is the use of fewer lines, which saves space and, usually, cost. The disadvantage is that more complex circuitry is needed within each module. Also, there is a potential reduction in performance because certain events that share the same lines cannot take place in parallel.

How are the address and data pins shared?

Address and Data pins Sometimes an address line and a data line are multiplexed into 1 line. Logically they are separate, but physically they share the same pins on the chip. There may be pins to indicate the size of the data to write: 8, 16 or 32 bits.

What is meaning of address and data multiplexing in 8088?

– By multiplexed we mean that the same pysical pin carries an address. bit at one time and the data bit another time. • Address lines A0-A15 and Data lines D0-D15 are multiplexed in 8086. These lines are labelled as AD0-AD15.

What is meant by multiplexing?

Multiplexing is the technology that is able to combine multiple communication signals together in order for them to traverse an otherwise single signal communication medium simultaneously. Multiplexing can be applied to both analog and digital signals.