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參數(shù)資料
| 型號(hào)： | IBM11N4845CB |
| 廠商： | IBM Microeletronics |
| 英文描述： | 4M x 72 Chip-Kill Protect ECC-on-DIMM Module(4M x 72 帶糾錯(cuò)代碼保護(hù)的小外形雙列直插動(dòng)態(tài)RAM模塊) |
| 中文描述： | 4米× 72片，殺死保護(hù)ECC的上內(nèi)存模塊（4米× 72帶糾錯(cuò)代碼保護(hù)的小外形雙列直插動(dòng)態(tài)內(nèi)存模塊） |
| 文件頁數(shù)： | 4/29頁 |
| 文件大小： | 542K |
| 代理商： | IBM11N4845CB |
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IBM11N4845BB
IBM11N4845CB
4M x 72 Chip-Kill Protect ECC-on-DIMM Module
Preliminary
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 4 of 29
75H5485
GA14-4640-00
Revised 11/96
Truth Table
Function
RAS
CAS
WE
OE
Row
Address
Column
Address
DQx
Standby
H
H
→
X
X
X
X
X
High Impedance
Read
Early-Write
L
L
L
L
H
L
L
X
Row
Row
Col
Col
Valid Data Out
Valid Data In
Late-Write
L
L
H
→
L
H
→
L
H
Row
Col
Valid Data In
RMW
L
L
L
→
H
Row
Col
Valid Data In/Out
EDO Page Mode - Read 1st Cycle
L
H
→
L
H
→
L
H
→
L
H
→
L
H
→
L
H
→
L
H
L
Row
Col
Valid Data Out
Subsequent Cycles
L
H
L
N/A
Col
Valid Data Out
EDO Page Mode - Write 1st Cycle
L
L
X
Row
Col
Valid Data In
Subsequent Cycles
L
L
X
N/A
Col
Valid Data In
EDO Page Mode - RMW 1st Cycle
L
H
→
L
H
→
L
L
→
H
L
→
H
Row
Col
Valid Data In/Out
Subsequent Cycles
L
N/A
Col
Valid Data In/Out
RAS-Only Refresh
L
H
X
X
Row
N/A
High Impedance
CAS-Before-RAS Refresh
H
→
L
L
H
X
X
X
High Impedance
Hidden Refresh
Read
L
→
H
→
L
L
H
L
Row
Col
Data Out
Write
L
→
H
→
L
L
H
X
Row
Col
Data In
Serial Presence Detect
SPD Entry
Value
SPD Entry
Binary
Bit4
Hex
Byte #
Description
Bit 7
Bit 6
Bit5
Bit3
Bit2
Bit1
Bit0
0
Number of SPD Bytes
128
1
0
0
0
0
0
0
0
80
08
02
0B
0C
0B
0A
01
48
00
01
3C
12
02
00
04
04
1
Total # Bytes in Serial PD
256
0
0
0
0
1
0
0
0
2
Memory Type
EDO
0
0
0
0
0
0
1
0
3
# of Row Addresses
11
0
0
0
0
1
0
1
1
12
0
0
0
0
1
1
0
0
4
# of Column Addresses
11
0
0
0
0
1
0
1
1
10
0
0
0
0
1
0
1
0
5
# of DIMM Banks
1
0
0
0
0
0
0
0
1
6
Module Data Width
x72
0
1
0
0
1
0
0
0
7
Module Data Width (Cont.)
0
0
0
0
0
0
0
0
0
8
Module Interface Levels
LVTTL
0
0
0
0
0
0
0
1
9
RAS Access
60ns
60
0
0
1
1
1
1
0
0
10
CAS Access
18ns
18
0
0
0
1
0
0
1
0
11
Dimm Config(Error Det/Corr.)
x72
ECC
0
0
0
0
0
0
1
0
12
Refresh Rate/Type
Normal 15.6
μ
s
x4
x4
0
0
0
0
0
0
0
0
13
Primary DRAM Organization
0
0
0
0
0
1
0
0
14
Secondary DRAM Organization
0
0
0
0
0
1
0
0
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