Freescale-semiconductor ColdFire MCF52210 Manual de usuario descargar pdf (Pagina 56)

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ColdFire Core

MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2

3-12 Freescale Semiconductor

For read-modify-write instructions, the pipeline effectively combines an embedded-load with a store

operation for a three-cycle execution time.

Figure 3-14. V2 OEP Register-to-Memory

The pipeline timing diagrams of Figure 3-15 depict the execution templates for these three classes of

instructions. In these diagrams, the x-axis represents time, and the various instruction operations are shown

progressing down the operand execution pipeline.

Operand Execution Pipeline

DSOC AGEX

Opword

Extension 1

Extension 2

Core Bus

Read Data

Core Bus

Address

Core Bus

Write

RGF

Data

d16

<ea>x

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