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— | cybiko:functionalblockdiagram [2009/11/27 17:54] (current) – created - external edit 127.0.0.1 | ||
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+ | ======Cybiko Functional Block Diagram====== | ||
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+ | {{ block_diagram.gif? | ||
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+ | The tranceiver module is based on the IC RF2915, (RF MICRO-DEVICES INC) which was specially designed for wireless data transciever and IC LMXS2315. | ||
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+ | A message to be transmitted is packed by the MCU HD6472246 into frames with 50 or 200 bytes lengths and sent to the MCU AT90S2313. | ||
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+ | The data stream coming from the controller AVR goes through a low-pass filter LPF1 to the varactor diode V1 that modulates the frequency of the VCO. The low-pass filter helps to limit the bandwidth occupied by the transmitter. | ||
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+ | Receiving frequency modulation signal from antenna pass through RF filter in RX IN pin on RF2915. | ||
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+ | The DC/DC converters LT1613 and LT1615 are used to generate a fixed power supply voltage of 3.3V for all IC and 17.8V for LCD. | ||
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+ | The DC/DC converters is designed for the application of 2 NiMa cells.\\ | ||
+ | The LMX2315 is high performance frequency synthesizers with integrated prescalers. | ||
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+ | Serial data is transferred into the LMX2315 from the MCU AT90S2313 via a three line interface (Data, Enable, Clock) | ||
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+ | the PCF8593 is a CMOS clock/ | ||
+ | Addresses and data are transferred serially in the MCU via the two-line bi-directional I2C bus. He has built-in 32.768kHz oscillator circuit. | ||
+ | ---- | ||
+ | These documents have been combined on this page | ||
+ | * {{block_diagram.pdf|Block Diagram}} | ||
+ | * {{block_diagram_desc.pdf|Block Diagram Description}} | ||
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