![]() An internal hardware component, having received the address from the address bus and about to receive the data, enables a buffer to allow the flow of signals to or from the location that was designated by the address bus. The physical location of the data in memory is carried by the address bus. A 64-bit processor has a 64-bit data bus and can communicate 64-bits of data at a time, and whether the data is read or written is determined by the control bus. The width of the data bus reflects the maximum amount of data that can be processed and delivered at one time. The data bus “width” of an MCU is typically 8-, 16-, 32- or 64-bits, although MCUs of just a 4-bit data bus or greater than 64-bit width are possible. By W Nowicki – Own work, based on a diagram in The Essentials of Computer Organization and Architecture By Linda Null, Julia Lobur. Control signals move out of the processor, but not in to it. The address bus carries addressing signals from the processor to memory, I/O (or peripherals), and other addressable devices around the processor. Together, these three make up the “system bus.” The system bus is an internal bus, intended to connect the processor with internal hardware devices, and is also called the “local” bus, Front Side Bus, or is sometimes loosely referred to as the “memory bus.”ĭata moving in and out of the data bus is bi-directional, since the processor reads and writes data, however, the others are uni-directional, since the processor always determines when and what it will read from or write to. There are three internal buses associated with processors: the data bus, address bus, and control bus. ![]() 230000000977 initiatory Effects 0.A bus is a pathway for digital signals to rapidly move data.230000015654 memory Effects 0.000 title claims abstract description 114.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US412471 priority Critical Priority to US08/412,471 priority patent/US5737550A/en Application filed by Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc Publication of EP0735479A1 publication Critical patent/EP0735479A1/en Status Withdrawn legal-status Critical Current Links Original Assignee Advanced Micro Devices Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor Seungtaik Michael Song Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Withdrawn Application number EP96301675A Other languages German ( de) ![]() ![]() Interface memory procssor pdf#Google Patents Cache memory to processor bus interface and method thereofĭownload PDF Info Publication number EP0735479A1 EP0735479A1 EP96301675A EP96301675A EP0735479A1 EP 0735479 A1 EP0735479 A1 EP 0735479A1 EP 96301675 A EP96301675 A EP 96301675A EP 96301675 A EP96301675 A EP 96301675A EP 0735479 A1 EP0735479 A1 EP 0735479A1 Authority EP European Patent Office Prior art keywords bytes address buffered cache memory bus Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents EP0735479A1 - Cache memory to processor bus interface and method thereof EP0735479A1 - Cache memory to processor bus interface and method thereof ![]()
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