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TDA5231 Datenblatt(PDF) 11 Page - Infineon Technologies AG |
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TDA5231 Datenblatt(HTML) 11 Page - Infineon Technologies AG |
11 / 186 page Data Sheet 7 Version 4.0, 2007-06-01 TDA523x Product Description 1.6.2 Baseband Processing TDA523x has integrated all means to process incoming ASK or FSK modulated Manchester-coded bit streams, and convert them into pure data, which can be read out via SPI by the host processor. Figure 3 Internal Data Processing Flow The Manchester-coded bit stream is decoded by the Manchester Decoder into a bit stream containing the wake-up pattern, the TSI (Telegram Start Identifier) and the payload. The Framer separates the payload and stores it in the FIFO. An interrupt is generated and data can be read from the FIFO by the host processor via SPI. 1.6.3 Autonomous Self Polling The TDA523x offers a fully autonomous Self Polling Mode, in which the RF input signal is scanned for valid data signals base on programmable timing. The host processor is not burdened with this task, so its full processing power is available for other tasks, or the host processor may stay in a power save, or sleep mode. When valid data has been RF Input RF Engine: amplifier, down converter, filter Demodulator Manchester Decoder Framer FIFO Down Converted RF Manchester Coded Bit Stream Complete Data Frames Payload Data Interrupt, SPI |
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Ähnliche Beschreibung - TDA5231 |
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