mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 158

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

The PowerPC Core
6.6.6 Executing Unaligned Instructions
The load/store unit supports fixed-point unaligned accesses in the hardware. The 32-bit
L-bus only supports naturally aligned transfers. For an unaligned instruction, the load/store
unit breaks the instruction into a series of aligned transfers that are pipelined into the bus.
Figure 6-7 illustrates the number of bus cycles needed to execute unaligned instructions.
Figure 6-7. Number of Bus Cycles Needed For Unaligned,
Single Register Fixed-Point Load/Store Instructions
Freescale Semiconductor, Inc.
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For More Information On This Product,
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MPC823 REFERENCE MANUAL
Go to: www.freescale.com
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2 BUS CYCLES
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