r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 256
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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8. Caches
8.3.6
OC Two-Way Mode
When the OC2W bit in RAMCR is set to 1, OC two-way mode which only uses way 0 and way 1
in the OC is entered. Thus, power consumption can be reduced. In this mode, only way 0 and way
1 are used even if a memory-mapped OC access is made.
The OC2W bit should be modified by a program in the P2 area. At that time, if the valid line has
already been recorded in the OC, data should be written back by software, if necessary, 1 should
be written to the OCI bit in CCR, and all entries in the OC should be invalid before modifying the
OC2W bit.
Rev.1.00 Jan. 10, 2008 Page 226 of 1658
REJ09B0261-0100
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