參數(shù)資料
型號(hào): 82439TX
廠商: INTEL CORP
元件分類: 存儲(chǔ)控制器/管理單元
英文描述: System Controller(系統(tǒng)控制器)
中文描述: 256M X 8, DRAM CONTROLLER, PBGA324
封裝: BGA-324
文件頁數(shù): 44/83頁
文件大?。?/td> 461K
代理商: 82439TX
82439TX (MTXC)
E
44
PRELIMINARY
Table 8 summarizes the operation of SMRAM space cycles targeting the SMI space addresses.
Table 8. SMRAM Space Cycles
G_
S
M
R
A
M
E
D_
L
C
K
D_
C
L
S
D_
O
P
E
N
S
M
I
A
C
T#
H_
S
M
R
A
M
E
T
S
E
G_
E
N
Code Fetch
Data Access
0
x
x
x
x
x
x
A
PCI
A
DRAM
A
DRAM
A
PCI
A
PCI
A
PCI
A
DRAM
A
DRAM
A
PCI
A
PCI
A
DRAM
A
DRAM
A
DRAM
A
PCI
S
PCI
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
S
PCI
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
Invalid
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
S
PCI
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
T
PCI
T
PCI
T
DRAM
A
PCI
A
DRAM
A
DRAM
A
PCI
A
PCI
A
PCI
A
DRAM
A
DRAM
A
PCI
A
PCI
A
PCI
A
PCI
A
PCI
A
PCI
S
PCI
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
S
PCI
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
S
PCI
S
PCI
S
PCI
S
PCI
Invalid
S
PCI
S
PCI
S
DRAM T
PCI
S
DRAM T
DRAM
S
PCI
S
PCI
S
PCI
S
PCI
S
PCI
T
PCI
T
PCI
T
DRAM
1
0
0
0
0
0
0
1
0
0
0
0
0
1
1
0
0
0
0
1
0
1
0
0
0
0
1
1
1
0
x
0
1
x
x
T
PCI
T
PCI
T
DRAM
T
PCI
T
PCI
T
DRAM
1
0
0
1
x
0
0
1
0
0
1
x
0
1
1
0
0
1
x
1
0
1
0
0
1
x
1
1
1
0
1
0
0
0
0
T
PCI
T
DRAM
T
PCI
T
PCI
T
PCI
T
PCI
1
0
1
0
0
0
1
1
0
1
0
0
1
0
1
0
1
0
0
1
1
1
0
1
1
x
x
x
1
1
0
0
0
0
0
A
DRAM
A
DRAM
A
PCI
A
PCI
A
PCI
A
DRAM
A
DRAM
A
PCI
A
PCI
T
PCI
T
DRAM
A
DRAM
A
DRAM
A
PCI
A
PCI
A
PCI
A
PCI
A
PCI
A
PCI
A
PCI
T
PCI
T
DRAM
1
1
0
0
0
0
1
1
1
0
0
0
1
0
1
1
0
0
0
1
1
1
1
x
0
1
x
x
T
PCI
T
PCI
T
DRAM
T
PCI
T
PCI
T
PCI
T
PCI
T
PCI
1
1
1
0
0
0
0
1
1
1
0
0
0
1
1
1
1
0
0
1
0
1
1
1
0
0
1
1
NOTES:
1.
A=A Segment, S=100A0000h to 100FFFFFh, and T=T Segment. The Code Fetch and Data Access columns
indicate whether the access is to the PCI bus or to main memory DRAM.
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