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SH7014 Datasheet(PDF) 134 Page - Renesas Technology Corp

Part # SH7014
Description  32-Bit RISC Microcomputer
PDF  754 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7014 Datasheet(HTML) 134 Page - Renesas Technology Corp

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7. Cache Memory (CAC)
Rev.5.00 Sep. 27, 2007 Page 100 of 716
REJ09B0398-0500
Idle cycle
Idle cycle
Idle cycle
CK
Internal
address
Address
RAS
CASx
Data
ROW
COLUMN
Miss-hit
RAS assert extension
Figure 7.7 Cache Fill Timing in Case of Non-Consecutive Cache Miss from DRAM Space
(Normal Mode, TPC = 0, RCD = 0, No Wait)
Miss-hit
ROW
COLUMN
CS space
Wait
COLUMN
RAS assert extension
CK
Internal
address
Address
RAS
CASx
Data
DRAM access
CS space
access
DRAM access
Miss-hit
Figure 7.8 Cache Fill Timing in Case of Consecutive Cache Misses from DRAM Space
(RAS Down Mode, TPC = 0, RCD = 0, No Wait)
7.4.4
Cache Hit after Cache Miss
The first cache hit after a cache miss is regarded as a cache miss, and a cache fill without idle
cycle generation is performed. The next hit operates as a cache hit.



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