Interleaved memory
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Interleaved memory is a design that spreads memory addresses across multiple memory banks to compensate for the relatively slow speed of DRAM. It increases bandwidth and improves performance by allowing different modules to be accessed independently and in parallel by different processing units like a CPU and hard disk. There are two address formats for interleaved memory: low order interleaving which spreads addresses across banks, and high order interleaving which uses high order bits as the module address.
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Interleaved memory
- 1. 1 Presented by Vaishali Goyal Ashish Goyal Interleaved Memory
- 2. 2 Basic Concept… It is a design made to compensate for the relatively slow speed of dynamic random-access memory (DRAM) or core memory, by spreading memory addresses evenly across memory banks.
- 4. 4 Two address formats for Memory Interleaving the address space: • Low Order Interleaving • High Order Interleaving
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- 10. 10 High Order Interleaving • High Order Interleaving uses the high order bits as the module address and the lower bits as the word address within each module. • In this arrangement, the consecutive words are usually in one module, having multiple modules is not helpful if consecutive words are needed.
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- 12. 12 Modules can be accessed independently by different units, e.g. by the CPU and a Hard Disk (or a second CPU) AND the units use different Modules => Parallel operation => Higher Performance
- 13. 13 Thank You