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UCC UART Rx Clock Determination

Question asked by naveen naga on Oct 2, 2015
Latest reply on Oct 4, 2015 by Pavel Chubakov



In the p1021 processor , we are operating QE UCC 5 in slow protocol for UART . The UART is working if the Tx & Rxclock source from internal BRG with same baud rate. Then the Rx clock is sourced from the external clock source with know frequency , same frequency is set for Tx BRG also.


If Rx clock source frequency is unknown the Tx clock rate has to be set according to the Rx clock rate received i.e how to determine the Rx clock rate before setting the Tx rate.


How we can read Rx frequency in QE UCC?