L6482 Data Sheet Rev 3 and FS_SPD register

I believe there is an error in the L6482 data sheet. The Register Map indicates a 10-bit wide FS_SPD register. However, the detailed description of the FS_SPD register describes a 12-bit wide register, Bit11 being the boost bit. When I set bit11 and read it back it always returns as 0, suggesting that the 12-bit wide definition is incorrect.