Memory-Mapped I/O Vs. Standard I/O

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فهرست عناوین اصلی در این پاورپوینت

● Interfacing
● Outline
● Introduction
● Basic Terminology
● Timing diagram
● Basic protocol concepts
● Time multiplexing
● Control methods :strobe and handshake
● Control methods :strobe / handshake compromise
● The ISA bus protocol – Memory Access
● Microprocessor interfacing: I/O addressing
● Extensions
● Memory-Mapped I/O and Standard I/O
● Memory-Mapped I/O Vs. Standard I/O
● ISA bus protocol
● A basic memory protocol
● A complex memory protocol
● Interrupts (interrupt driven I/O)
● Interrupt Addressing
● Fixed Int.
● Vectored Int.
● DMA
● DMA flow of actions
● DMA flow of actions (cont.)
● Arbitration
● Arbitration Priority Arbiter
● Arbitration Daisy-Chain Arbitration
● Arbitration Network-Oriented
● Multilevel Bus Architectures
● Multilevel Bus Architectures cont.
● Advanced Communication Principles
● Parallel communication
● Parallel Protocols
● Serial communication
● Serial Protocols
● Wireless communication
● Wireless Protocols
● Reference

نوع زبان: انگلیسی حجم: 0.71 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 41 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/06/07 11:50:36

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عبارات مهم استفاده شده در این مطلب

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., time, interface, embedded, system, real, datum, memory, processor, o, bus, protocol,

توجه: این مطلب در تاریخ 2019/06/07 11:50:36 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

http://www.just.edu.jo/~tawalbeh/cpe746/slides/Interface.ppt

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: ., time, interface, embedded, system, real, datum, memory, processor, o, bus, protocol,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

interfacing real time embedded systems khalid abu muhaimeed nouh kh.toolitch supervisor dr.lo ai tawalbeh real time embedded systems interfacing outline interfacing basics. microprocessor interfacing i o addressing. interrupts. direct memory access dma . real time embedded systems interfacing real time embedded systems interfacing introduction processor process data. memory storage buses communication communication transfer of data among processors and memories. this communication is known as interfacing. real time embedded systems interfacing real time embedded systems interfacing basic terminology unidirectional rd’ wr enable wires bidirectional data a set of wires with the same function a set of wires with a single function data bus . bus entire wires collection along with their communication protocol. protocol rules for communicating over the wires. low level hw protocols real time embedded systems interfacing real time embedded systems interfacing basic terminology port the actual conducting device metal on the processor or memory through which the signal is input to or output from. we could use the term pin to refer to a port on a processor. pin is also a term referring to the extending pins from the processor as own ic package . they are designed to be plugged into a socket on a printed circuit board. small metallic balls could be used rather than pins if the processor is packaged in its own ic . if the processor coexists on a single ic with other processors and memories pads of metal are used in the ic. real time embedded systems interfacing real time embedded systems interfacing timing diagram it is the most common method for describing a hw protocol. time proceeds to the right along the x axis. control lines high or low. data lines addr data invalid one horizontal line or valid two horizontal lines . the processor must place the address on addr for at least tsetup time before setting the enable high. the high enable line triggers the memory to put data on the data wires after tread time. when line is active high or commonly low it triggers the data transfer. assert means setting control line to its active value. deassert means setting control line to its low value. a protocol could be consisted of subprotocols i.e. read write known as transaction or a bus cycle. a bus cycle may consists of several clock cycles. real time embedded systems interfacing real time embedded systems interfacing basic protocol concepts actor is the processor or memory involved in data transfer. a protocol involves two actors a master and a servant slave . a master initiates the data transfer usually general purpose processor and the servant responds to the initiation request usually memories and peripherals . data direction the direction that the transferred data moves btw. actors receiving or sending data . addresses a special type of data used to indicate where regular data should go to or come from used to address memory locations peripherals and peripheral s registers . real time embedded systems interfacing real time embedded systems interfacing time multiplexing share a single set of wires for multiple pieces of data. saves wires at expense of time. real time embedded systems interfacing real time embedded systems interfacing control methods strobe and handshake a handshake protocol can adjust to a servant with varying response times but it could be slower and need extra clock cycles and extra line. real time embedded systems interfacing real time embedded systems interfacing control methods strobe handshake compromise it achieves both the speed of strobe protocol and the varying response time tolerance of a handshake protocol. the handshake only occurs if it necessary. real time embedded systems interfacing real time embedded systems interfacing the isa bus protocol – memory access isa the industry standard architecture. ۸ x۸۶ microprocessor. ۲ bit memory address. ale address latch enable. chrdy channel ready. compromise strobe handshake control method is used. the memory deasserted chrdy before the rising clock edge in c۲ causing the microprocessor to insert wait cycles up to ۶ cycles until chrdy was reasserted. real time embedded systems interfacing real time embedded systems interfacing microprocessor interfacing i o addressing the microprocessor s pins used to communicate data to and from it are called i o pins. we normally consider the access to peripherals not memory as i o. two common methods for using pins to support i o port based i o parallel i o and bus based i o. in parallel i o a port can be directly read and written by processor instructions like any register. ex.p ۲۵۵ g p۲ . ports are often bit addressable. in bus based i o the microprocessor has a set of address data and control ports corresponding to bus lines and uses the bus to access memory and peripherals. real time embedded systems interfacing real time embedded systems interfacing extensions parallel i o peripheral. when processor only supports bus based i o but parallel i o …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: ., time, interface, embedded, system, real, datum, memory, processor, o, bus, protocol,

این فایل پاورپوینت شامل 41 اسلاید و به زبان انگلیسی و حجم آن 0.71 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/06/07 11:50:36 استخراج شده است.

http://www.just.edu.jo/~tawalbeh/cpe746/slides/Interface.ppt

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