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μ[sic] preliminary schematic
wesley :: chris :: dave :: josh
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:: the ideas
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:: the ideas
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:: basestation schematic
Data Memory Bluetooth DAC User I/O LCD
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:: data memory & bluetooth
SPI slaves to microcontroller two GPIO pins from micro used as slave selects
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:: user input & (non-LCD) output
four buttons three status indication LEDs
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:: digital-to-analog converter
system & data clocks (SCLK, DCLK) provided by microcontroller left/right channel selection (DSEL) from micro data (DOUT) from micro analog output to line level audio (HOUTR, HOUTL)
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:: lcd control signals (RS, R/W’, E) from microcontroller
8-bit data from micro contrast control!
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:: pmd schematic Bluetooth Data Memory Status Output
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:: pmd power schematic Battery Charger Battery
DC-DC step up/down regulator
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:: end
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