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Physical Address Space:
(1) P0, P3, and U0 Areas
The P0, P3, and U0 areas can be accessed through the cache. When CCR.CE is 1, these areas will
be accessed through the cache. The caching mode, copy-back or write-through, is selected by the
setting of CCR.WT.
Some of the peripheral module's control registers are allocated to area 1 of the physical address
space. To access any of these registers via the P0, P3, or U0 areas, the CCR and CE bits are
cleared to 0 and select no caching.
(2) P1 Area
The P1 area can be accessed through the cache. When CCR.CE is 1, this area is accessed through
the cache. The caching mode, copy-back or write-through, is selected by the setting of CCR.CB.
(3) P2 and P4 Areas
Access to the P2 and P4 areas through the cache is not possible.
(4) Uxg Area
Access to the Uxg area through the cache is not possible. This area only becomes usable when
SR.DSP holds 1. For details on the Uxg area, see the description of the xg memory.
Summary of Contents for SH7709S
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