Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

 153

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

The table below shows the instructions that operate on packing and unpacking data:

PKH

Pack Halfword

SXTAB

Extend 8 bits to 32 and add

SXTAB16

Dual extend 8 bits to 16 and add

SXTAH

Extend 16 bits to 32 and add

SXTB

Sign extend a byte

SXTB16

Dual extend 8 bits to 16 and add

SXTH

Sign extend a halfword

UXTAB

Extend 8 bits to 32 and add

UXTAB16

Dual extend 8 bits to 16 and add

UXTAH

Extend 16 bits to 32 and add

UXTB

Zero extend a byte

UXTB16

Dual zero extend 8 bits to 16 and add

UXTH

Zero extend a halfword