72 Bit Registered ECC
DDR SDRAM DIMM MODULES
Optimum Density and Performance
White Electronic Designs
offers a complete family of 72 bit wide fully
registered ECC Modules in a 184 pin JEDEC standard module. Available
module speeds vary with the module architecture, base component densities,
as well as the component vendor; therefore we recommend consulting the
factory for the latest availability. We test each module over temperature
extremes to insure the best quality and performance for the server as well as
other high performance markets.
Module Density
1GB
1GB
2GB
2GB
4GB
WEDC Part Number
WED3EG72125S-JD3
WED3EG72126S-JD3
WED3EG72255S-JD3
WED3EG72256S-JD3*
WED3EG72512S-JD3*
*DDR333 available Q3’04
Product Features
•
Fully tested at temperature extremes
•
Meets the 1U server height requirement
•
Human and barcode readable serial number
on each DIMM
•
Electronic Board Description simulation Models
(.EBD) available
•
Double data rate architecture; two data transfers
per clock cycle
•
Clock speed of 100MHz (DDR200), 133MHz
(DDR266), and 166MHz (DDR333)
•
Programmable Read Latency 2 & 2.5 (clock)
•
Auto and self refresh
•
JEDEC standard 184 pin DIMM package
•
Power supply: 2.5V = /-0.2V, Vddq: 2.5V = /-0.2
Benefits
•
Industry Standard
•
Module tested at speed
•
Temp extremes testing provided
upon customer’s request
•
•
•
High data transfer rate
Low profile
JEDEC compliant
Package
•
184 pin DIMM
•
1.2 x 5.255 in. (30.48mm x 133.48mm)
•
.150 in (3.81mm) mono body thickness max
•
.260 in (6.604mm) stacked body thickness max
This product is subject to change without notice.
Target Applications
•
Server Applications
•
Workstations
•
Super Computers
For more information, visit our website at
www.whiteedc.com
or call (602) 437-1520
FUNCTIONAL BLOCK DIAGRAM
VSS
RS0
DQS0
DQ0
DQ1
DQ2
DQ3
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
CS
D0
DM
DQ4
DQ5
DQ6
DQ7
DQS9
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
DQS
I/O3
I/O2
I/O1
I/O0
CS
D9
DM
DQS1
CS
D1
DM
DQ8
DQ9
DQ10
DQ11
DQS10
CS
D10
DM
DQ12
DQ13
DQ14
DQ15
DQS2
CS
D2
DM
DQ16
DQ17
DQ18
DQ19
DQS11
CS
D11
DM
DQ20
DQ21
DQ22
DQ23
DQS3
DQ24
DQ25
DQ26
DQ27
CS
D3
DM
DQS12
CS
D12
DM
CK0
SDRAM
DQ28
DQ29
DQ30
DQ31
PLL
CS
D13
DM
CK0
REGISTER
DQS4
CS
D4
DM
DQ32
DQ33
DQ34
DQ35
DQS13
DQ36
DQ37
DQ38
DQ39
DQ44
DQ45
DQ46
DQ47
DQ52
DQ53
DQ54
DQ55
DQS5
DQ40
DQ41
DQ42
DQ43
DQS14
CS
D5
DM
CS
D14
DM
Serial PD
SCL
WP
SDA
A0
A1
A2
SA0 SA1 SA2
DQS6
CS
D6
DM
DQ48
DQ49
DQ50
DQ51
DQS15
CS
D15
DM
DQS7
CS
D7
DM
DQ56
DQ57
DQ58
DQ59
DQS16
CS
D16
DM
V
DDSPD
V
DD
/V
DDQ
CS
D17
DM
VREF
V
SS
SPD
D0 - D17
D0 - D17
D0 - D17
D0 - D17
DQ60
DQ61
DQ62
DQ63
DQS8
CS
D8
DM
CB0
CB1
CB2
CB3
DQS17
CB4
CB5
CB6
CB7
CS0
BA0-BAN
A0-A12
RAS
CAS
CKE0
WE
PCK
PCK
R
E
G
I
S
T
E
R
RS0A
RS0B
RBA0-RBAn
RA0-RA12
RRAS
RCAS
RCKE0A
RCKE0B
RWE
RESET
BA0-BAn SDRAMs DQ0-17
A0-An SDRAMs D0-D17
RAS SDRAMs D0-17CAS
SDRAMs DQ0-17
CKE SDRAMs D0-D8
CKE SDRAMs D9-D17
WE SDRAMs D0-D17
Notes: 1. DQ-to-I/O wiring is shown as
recommended but may be changed.
2. DQ/DQS/DM/CKE/S relationships must
be maintained as shown.
3. DQ, DQS resistors: 22 Ohms.
*Block diagram represents 1 rank only
Base Part Numbers**
Density
1GB
1GB
2GB
2GB
4GB
Ranks
2
1
2
1
2
(QTY) DRAM Component
(36)
(18)
(36)
(18)
(36)
64Mx4 Stacked
128Mx4 Mono
128Mx4 Stacked
256M x 4 Mono
256M x 4 Stacked
•
•
•
•
•
WED3EG72125S-JD3
WED3EG72126S-JD3
WED3EG72255S-JD3
WED3EG72256S-JD3
WED3EG72512S-JD3
**For speed and vendor specific part numbering, please consult the factory.
For ordering or information on any of our products and
services, call White Electronic Designs at:
Defense Microeletronics Division
3601 E. University Dr.
Phoenix, AZ 85034
Tel: 602-437-1520 Fax: 602-437-9120
www.whiteedc.com
White Electronic Designs
WED3EG72xxxS-JD3 Flyer
Rev. 0 07/04
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