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[讨论] bk2425低功耗高性能的2.4 GH的芯片以及收发器原理图

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发表于 2017-12-30 10:09:46 | 显示全部楼层 |阅读模式


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  BK2425 is a GFSK transceiver operaTIng in the world wide ISM frequency band at 2400- 2483.5 MHz. Burst mode transmission and up to 2Mbps air data rate make them suitable for applicaTIons requiring ultra low power consumpTIon. The embedded packet processing engines enable their full operaTIon with a very simple MCU as a radio system. Auto re-transmission and auto acknowledge give reliable link without any MCU interference. BK2425 operates in TDD mode, either as a transmitter or as a receiver. The RF channel frequency determines the center of the channel used by BK2425. The frequency is set by the RF_CH register in register bank 0 according to the following formula: F0= 2400 + RF_CH (MHz)。 The resolution of the RF channel frequency is 1MHz. A transmitter and a receiver must be programmed with the same RF channel frequency to be able to communicate with each other. The output power of BK2425 is set by the RF_PWR bits in the RF_SETUP register. Demodulation is done with embedded data slicer and bit recovery logic. The air data rate can be programmed to 250Kbps, 1Mbps or 2Mbps by RF_DR_HIGH and RF_DR_LOW register. A transmitter and a receiver must be programmed with the same setting. In the following chapters, all registers are in register bank 0 except with explicit claim.

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