ARM.SoC.Architecture

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Unformatted text preview: cal base-station through a radio link. DRAM Dynamic Random Access Memory; the lowest price per bit form of RAM, used as the main memory in most computer systems. The data is stored as charge on a capacitor and leaks away in a few milliseconds (hence dynamic); to store for longer periods the DRAM must be refreshed periodically, which means it must be read while it is still valid and then rewritten to restore the full charge. DSP Digital Signal Processor; a programmable processor whose organization is optimized towards processing continuous streams of digital data. This should be contrasted with a general-purpose processor such as the ARM that is optimized for control (decision making) operations. EDO Extended Data Out; a particular interface standard for DRAM memory that allows high-performance memory systems to be built. EEPROM (also E2PROM.) Electrically Erasable and Programmable Read Only Memory; a ROM that can be programmed and erased by applying suitable electrical signals. Similar to flash memory, but uses a different technology and is generally less flexible than flash. EPLD Electrically-Programmable Logic Device; a general-purpose logic chip which has a large number of gates whose connectivity is defined by the state of on-chip memory cells. These cells may be reprogrammed to change the logic function of the device. (See also FPGA, which is a one-time configurable device.) EPROM Electrically-Programmable Read Only Memory; a ROM which can be programmed by applying suitable electrical signals. Usually it can be erased using an ultra-violet light source and reprogrammed many times. Flash A form of electrically programmable read only memory that can be erased and reprogrammed electronically. It is widely used to store infrequently changing programs and data in portable systems, and increasingly used as a form of non-volatile file store. FPA Floating-Point Accelerator; additional hardware to speed up floating-point operations, for example, the ARM FPA10. FPASC Floating-Point Accelerator Support Code; the software that is run in an ARM system which includes an FPA 10 floating-point accelerator. The...
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This document was uploaded on 10/30/2011 for the course CSE 378 380 at SUNY Buffalo.

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