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TMS320f2808 SCI not working

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The transmitter is transmitting to dsp via SCI-b of 8bits data at 9600 buad rate. When I sniff the UART line, the data is in format and i initialized SCI regs appropriately. 

The dsp is flagging Frame Error and BRKDT error bit.

Second test, I ground the SCI RXB but still Frame Error and BRKDT is on and off. 

What can it be the problem?

Thank You in advance.


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