The ideal way to get more bus bandwidth is to increase the speed of the bus. Increasing the bus speed adds more down beats (or “hooks”, in our analogy) per second to the bus. More down beats per second means more opportunities per second for sending out code and data.

A 64k bit DRAM was using 8 address lines. The width of the address bus determines the amount of memory a system can address. For example, a system with a 16-bit address bus can address 2^16 memory locations. If each memory location holds one byte (8 bits), the addressable memory space is 644 KB of memory.

By increasing the width of the address bus, more memory locations can be directly addressed. Each time the width is increased by one wire, the address capacity is doubled. ARM processors normally have 32-bit wide address buses.

A system bus is a single computer bus that connects the major components of a computer system, combining the functions of a data bus to carry information, an address bus to determine where it should be sent or read from, and a control bus to determine its operation.

As shown in Figure 1.5, the system bus consists of three major components: an address bus, a data bus, and a control bus. memory. Furthermore, each data transfer can move 64 bits of data. The control bus consists of a set of control signals.

The primary role of system bus is Unidirectional because the microprocessor is addressing a specific memory location. No outside devices can not write into Microprocessor. Data bus is Bidirectional because the Microprocessor can read data from memory or write data to the memory.

“All buses have a control bus, data bus, and power bus. The control bus is used by the CPU to send signals to the different parts of the computer system to keep the actions of the different parts coordinated.

BUS structure : A group of lines that serves as a connecting path for several devices is called bus.In addition to the lines that carry the data, the bus must have lines for address and control purposes.

[′bəs ′är·kə‚tek·chər] (computer science) A structure for handling data transmission in a computer system or network, in which components are all linked to a common bus.