Telecoms, Datacoms, Wireless, IoT


FlexRay Active Star device

4 February 2009 Telecoms, Datacoms, Wireless, IoT

New from austriamicrosystems is the AS8224 FlexRay Active Star device with embedded bit-reshaper. The bit-reshaper reduces the asymmetric delay either caused by components in FlexRay networks or introduced by external interferences onto the network. The device is capable of reshaping single bits in 12,5 ns steps (1 microtick) up to a total of 37,5 ns (3 microticks) for shortened and lengthened bits. The mechanism performs a clock-deviation compensation between the input and output stream of the device while the BSS (byte start sequence) of the FlexRay frame is shortened or lengthened by one microtick. The bit-reshaping function can be set as an option and will be functional if an external clock is connected to the device. Otherwise, the bit-reshaper will be bypassed and the device acts as a standard Active Star without timing reshaping.



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