SPI doesn´t work ISZ-2510

Hello,

I want to use the ISZ-2510 in SPI mode. But doesn´t work. Rate is 1MHz.
One question before:What does the I2C_IF_DIS Bit? Do I have to turn it of with I2C before I can use SPI? Would not make sense...

This is my timing when I write:



This is my timing when I read:



You can see: I write a 0x10, but get back 0x00