op{cond} Rd, #sat, Rn

where:

Halfword-wise signed and unsigned saturation to any bit position.

The SSAT16 instruction saturates each signed halfword to the signed range -2^sat-1 ≤ x ≤ 2^sat-1 -1.

The USAT16 instruction saturates each signed halfword to the unsigned range 0 ≤ x ≤ 2^sat -1.

You cannot use PC for any register.

You can use SP in ARM instructions but these are deprecated in ARMv6T2 and above. You cannot use SP in Thumb instructions.

If saturation occurs on either halfword, these instructions set the Q flag. To read the state of the Q flag, use an MRS instruction.

These ARM instructions are available in ARMv6 and above.

These 32-bit Thumb instructions are available in ARMv6T2 and above. For the ARMv7-M architecture, they are only available in an ARMv7E-M implementation.

There are no 16-bit Thumb versions of these instructions.

    SSAT16  r7, #12, r7
    USAT16  r0, #7, r5

    SSAT16  r1, #16, r2, LSL #4 ; shifts not permitted with halfword saturations