I'm providing 1 MHz SPI clock, and I'm reading the sensor every second (for now). However, I always get values starting at 8 or A, for example 0x8800, 0xA801, 0x87FE, 0xA7FB, 0x8807, etc. I don't have a way to program the sensor now, so I'm using it with default parameters. What could be my problem?