ELEC3300_07_stu

ELEC3300_07_stu - ELEC 3300 Microprocessor Applications...

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ELEC 3300 : Fall 11/12 Tim Woo 1 ELEC 3300 Microprocessor Applications Topic 7 Serial Communication and RS Serial Communication and RS - - 232 Standard 232 Standard Prof. Tim Woo Prof. Tim Woo
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ELEC 3300 : Fall 11/12 Tim Woo 2 Where we are Timer and Counter Basic Computer Structure Introduction to Microprocessor-based Systems Digital and Analog Interfacing Interrupt Organization Memory, Interfacing to Memory, Memory Timing and applications Motor Interfacing Buffering and Direct Memory Access (DMA) Interfacing LCD Other Serial Bus Interface: IEEE1394, USB, I2C and SPI Serial Communication and RS-232 Standard To be covered In progress Done Microcontroller Structure A/D Port Assembler Instruction Set Architecture Memory I/O System CPU Serial Port External Memory Port Interrupt Port Simple Port In this course, 8051 is used as a driving vehicle for delivering the concepts.
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ELEC 3300 : Fall 11/12 Tim Woo 3 • On successful completion of this topic, you will be able to – Summarize the main points of parallel and serial communications – Build both hardware and software configurations of the serial communication – Apply four different modes of operations in UART (universal asynchronous receiver and transmitter) standard Expected Outcomes Expected Outcomes
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ELEC 3300 : Fall 11/12 Tim Woo 4 Two different communication protocols: – Serial communications • Serial transmits one bit at a time over a single wire – Parallel communications • transmits multiple bits over multiple wires • Restricted to short distance (<20ft) because of parallel wires Data Communication Data Communication Communications between computer and monitor over serial line – data is converted from parallel (bytes) to serial (bits) in the bus interface – Bits are sent over wire (TX) to terminal (or back from terminal to computer) – Receiving end (RX) translates bit stream back into parallel data (bytes)
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ELEC 3300 : Fall 11/12 Tim Woo 5 Two common communication topologies (hardware configurations) – Point-to-point • Two end stations communicates as peers – Multi-point • One device is designated as master (primary) and another as slave (secondary) Types of Communication Links Types of Communication Links
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ELEC 3300 : Fall 11/12 Tim Woo 6 There are 3 different communication protocols. – Full-duplex communication • One signal wire is for transmitting, the other for receiving • Closed loop: individual characters are echoed back to transmitter • Open loop: data is assumed to reach its destination – Half-duplex communication • One signal wire for both transmitting and receiving – Simplex communication • One signal wire for transmitting only Types of Serial Communication Types of Serial Communication
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ELEC 3300 : Fall 11/12 Tim Woo 7 RS-232 (standard serial line) is commonly used in data communication. – It is also called EIA-232-E (for revision E)
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ELEC3300_07_stu - ELEC 3300 Microprocessor Applications...

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