利用PCA9605通过双绞线电缆驱动I2C总线信号

利用PCA9605通过双绞线电缆驱动I2C总线信号
AN11075
Driving I2C-bus signals over twisted pair cables with PCA9605
Rev. 1 ― 19 August 2011 Application note




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Keywords I2C-bus, 2-wire bus, twisted pair cables, LED lighting, communication
cables, Cat5e, Cat6, Fast-mode, Fast-mode Plus, Fm+, inter-IC, SDA,
SCL, PCA9605, RS-485, CAN bus
Abstract The availability of powerful I2C buffers that drive their I/Os on both sides to
a nominal ground or ‘zero offset’ logic level allows the removal of noise
introduced into one section of a larger bus system. That ‘regeneration’ of
clean I2C signal