Lec09 - ECE 212 Digital Circuits II Monday, 25 February...

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1 ECE 212 Digital Circuits II Monday, 25 February 2008 ± HW Set 9: Problem 1 Steve H. Problem 2 Bill H. Problem 3 Andrew J. Problem 4 No presenter (lab exercise). Problem 5 No presenter (lab exercise). Problem 6 Mark K. Stack Calculator with Switch Input Technical memo. DUE: One week after completion.
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2 Today's Goals ± To understand the format of asynchronous serial data. ± To propose a system to receive one Byte of asynchronous serial data. ± To understand the output of a keyboard. ± To propose a system for reading the keyboard.
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3 Data Transmission ± Problem: Send a Byte of data from a source (transmitter) to a destination (receiver). ± Solutions: Parallel data Source Destination Send all 8 bits at the same time. Send ONE bit at a time. Problem: Synchronization Serial Data
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4 Serial Data Options ± Send the clock signal with the data. Source Destination Should solve the synchronization problem. Receiver has its own clock. OR Recover the clock from the data signal. (Asynchronous serial data.) (Synchronous serial data.) ± Don't send the clock.
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5 Application Bit Rate Clock? Packet Size Serial Port 300 b/s to 19.2 Kb/s NO 10 or 11 bits USB 480 Mb/s NO Variable Keyboard ~13 Kb/s YES 11 bits Ethernet 10 Gb/s NO Variable Serial Data Examples Source Destination RS-232 V. 2.0
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This note was uploaded on 04/17/2008 for the course ECE 212 taught by Professor Greco during the Spring '08 term at Lafayette.

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Lec09 - ECE 212 Digital Circuits II Monday, 25 February...

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