Hi,I implemented an Hdlc application on the EM board and I want to use an external clock for TX and Rx. I set naHdlcIoctl(channel,NAHDLC_TX_CLCK_EXT,(void*)TRUE); as it is told in the Api and I also connected my external clock physically to RTS/SPI_CLK pin. No transmission is occuring (no output signal) .Do i have some additionnal settings to do ? answer if you have any idea. Thanks,