TMS320F28P550SJ: TMS320F28P550SJ SPI Problem

Tool/software:

SPIA is not working, I have a running code on the LaunchXL-F28P55X demo board with the F28P550SJ9PZ controller. And now I want to run my code at my own board with the F28P550J9PM  in TQFP64 case.

I looks as if the complete SPI interface has no clock. The code hangs up here (the last line when I wait for everything to be transmitted:

SPI_writeDataBlockingFIFO(_spi_interface,  (address | WRITE_CMD) <<8);
SPI_writeDataBlockingFIFO(_spi_interface, ((value >> 24) & 0x00FF)<<8);
SPI_writeDataBlockingFIFO(_spi_interface, ((value >> 16) & 0x00FF)<<8);
SPI_writeDataBlockingFIFO(_spi_interface, ((value >> 8) & 0x00FF)<<8);
SPI_writeDataBlockingFIFO(_spi_interface, (value & 0x00FF)<<8);
while(SPI_getTxFIFOStatus(_spi_interface) != SPI_FIFO_TXEMPTY);             // Wait until everything is transmitted

This should never happen, also if nothing would be connected

With the scope I also see no actions at the SPI pins. The GPIO muxes seems to be correct. One difference is: On my board I have no external clock am so I must work with the internal clock. But at the LaunchXL I can switch to the internal oscillator and the code is still working.

With other interfaces (SCI) I have no problems

The hardware setup was generated with sysconfig.