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Published byBrandon Thornton Modified over 9 years ago
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Universal Lexicon Ethan Byler Luke Johnston Dhruv Lamba Andy Robison
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Revised Success Criteria 1)An ability to display a languages’ characters as a keyboard layout on an LCD screen. 2)An ability to change the language displayed on the keyboard by selecting a new language on a touch-screen menu. 3)An ability to receive and decode a key press as a meaningful character. 4)An ability to send and display a language’s characters on a host PC through a PS/2 interface. 5)An ability to load languages from an SD card.
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Block Diagram
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Major Design Constraints Number of I/O pins on the microcontroller Memory space on micro for embedded C libraries and character look-up tables Total cost should be less than similar products (Maximus ~ $2000) Availability of IP for VGA controller
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Micro Selection Chose Microchip PIC32MX360F512L –Plenty of general purpose IO pins (85) –Plenty of flash (512kB) –Familiar with MIPS architecture –Low cost; few un-needed periphreals Alternatives –PIC32MX360F256L (256kB flash, 85 IO pins) –PIC32MX320F032H (32kB flash, 53 IO pins)
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FPGA Selection Chose Altera Cyclone II –Used extensively in ECE437 –Reference design available for VGA controller –Low cost and power Alternatives –Altera Stratix II –Actel ProASIC3 –Xilinx Spartan-3
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