First page Back Continue Last page Overview Text
Another way to increase the memory access speed is to get more information with each memory access. This can be achieved by using a wider data bus. Several instructions or many bytes of data can be fetched simultaneously using a wide data bus. A wide data bus is especially suitable for high-end microprocessors where scalar structure is used. Wider data buses also support long instructions with multiple operands.
Wide data buses usually are not used for price-sensitive applications since wide data buses increases the number of CPU pins and hence increase the integration cost.