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CC1125 - problems with SPI -CSN and MISO

Other Parts Discussed in Thread: CC1125, CC1120, MSP430F5507


I have recently received my PCB:s with my MSP430f5507 MCU and the CC1125 RF transceiver. I have based my software on the software examples provided by TI and the code works fine on your CC1120 DK kit with the TRxEB. However when I move my code to my custom PCB I cant get the SPI communication to work with my CC1125. The CSN pin goes low as it should but when the CSN gets pulled low the MISO pin gets pulled high the same time. This is not the case for TRxEB as I have measured all signals with an oscilloscope. In the user guide for the CC1125 it says that the MISO should get pulled low immediately when pulling CSn low but instead it gets pulled high from low. Does anyone know why this is? I use the USCI_B1 module on my MSP430f5507 instead of the USCI_B0 module on the DK. I simply change the pins and ports in the code. I also wonder wether or not not the clock for the SPI need to be different since the code is now running for a CC1125 instead of a CC1120?