From the datasheet, section 8.1.1.4, the out of range description states that the data outputs will be all 1’s for any input above FSR and all 0’s for any input below FSR.
This makes sense for an offset binary data format but what happens for the 2’s complement data format? Does the output clip at 0x7FF for inputs above FSR? Would the output clip at 0x800 for inputs below FSR?