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CC110L: CC110L NOT GOING TO STX MODE.

Part Number: CC110L

hello,

i am working CC110L .

i has wrote FIFO in TXFIFO register. when i read back it is showing me what it has tried to read back.

then issue STX command. and i am waiting for STX command to be executed but the strange thing i found that radio is not going to execute STX command and when i read back the byte 1 data is still there in TXFIFO so why one data always remain in FIFO . 

below is code snap shot

loading FIFO and read-back  is ok. sending STX command and waiting for entering in transmit mode is not there due to one data is always there in TxFIFO .

below is waveform of what i am receiving when i send TXBYTE read command.

ch1.clock

ch2.MOSI

CH3.MISO

CH4.CSn pin

how to solve this problem.????