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參數(shù)資料
| 型號： | MPC2605ZP66 |
| 廠商： | MOTOROLA INC |
| 元件分類： | DRAM |
| 英文描述： | Circular Connector; Body Material:Aluminum; Series:PT07; Number of Contacts:36; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Jam Nut Receptacle; Circular Contact Gender:Socket |
| 中文描述： | 32K X 72 CACHE TAG SRAM, 8.5 ns, PBGA241 |
| 封裝： | PLASTIC, BGA-241 |
| 文件頁數(shù)： | 20/30頁 |
| 文件大?。?/td> | 288K |
| 代理商： | MPC2605ZP66 |
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MPC2605
20
MOTOROLA
READ/WRITE MISS
Figure 6 is an illustration of a processor read or write miss
that causes the MPC2605 to replace a dirty line. L2 BR is
asserted two clocks after TS. The dirty data to be replaced is
moved into the internal cast out buffer (COB) at the same
time the new data is written into the cache. Note that the
copyback operation occurs after the processor request is
satisfied. In addition, no delay is added to the processor
transaction. It proceeds as fast as the memory controller will
allow.
CLK
CPU BG
L2 BR
L2 BG
TS
A0 – A31
TBST
L2 CLAIM
AACK
CPU DBG
L2 DBG
DBB
TA
DH0 – DH31,
DL0 – DL31
1
2
3
4
5
6
7
8
9
10
11
12
A
B
A1
A2
A3
A4
B1
B2
B3
B4
Signal driven to the MPC2605
Signal driven by the MPC2605
High–Z
LEGEND
Figure 6. Read or Write Miss Followed by Castout
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|---|---|
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