參數(shù)資料
型號(hào): W3EG6433S262D3
英文描述: 256MB - 2x16Mx64 DDR SDRAM UNBUFFERED
中文描述: 256MB的- 2x16Mx64 DDR內(nèi)存緩沖
文件頁(yè)數(shù): 3/12頁(yè)
文件大?。?/td> 246K
代理商: W3EG6433S262D3
3
White Electronic Designs Corporation (602) 437-1520 www.wedc.com
White Electronic Designs
W3EG6433S-D3
-JD3
November 2005
Rev. 2
PRELIMINARY
FUNCTIONAL BLOCK DIAGRAM
CS0#
DQS0
DQS
DQ0
DQ2
DQS1
DM1
DQS
DQ8
DQ10
DQS2
DQS
DQ16
DQ19
DQS3
DQS
DQ24
DQ27
DQS4
DQS
DQ32
DQ35
DQS5
DM5
DQS
DQ40
DQS6
DQS
DQ48
DQS7
DQS
DQ56
DQ59
I/O 7
I/O 0
I/O 7
I/O 4
I/O 7
I/O 2
I/O 7
I/O 7
I/O 0
I/O 7
I/O 4
I/O 7
I/O 7
DQS
DQS
DQS
DQS
I/O 0
I/O 7
DQS
DQS
DQS
DQS
CS1#
I/O 0
I/O 2
I/O 0
I/O 2
I/O 0
I/O 3
I/O 0
I/O 7
I/O 0
I/O 2
I/O 0
I/O 2
I/O 0
I/O 3
A0 - A11
A0-A11 : DDR SDRAMs
RAS#
RAS# DDR SDRAMs
CAS#
CAS# : DDR SDRAMs
CKE : DDR SDRAMs
WE#
WE# DDR SDRAMs
BA0 - BA1
BA0-BA1 : DDR SDRAMs
V
SS
DDR SDRAMs
V
CC
/V
CCQ
DDR SDRAMs
DDR SDRAMs
DDR SDRAMs
VREF
V
CCSPD
SPD
*Clock Net Wiring
* Clock Wiring
Clock
Input
DDR SDRAMs
*CK0/CK0#
*CK1/CK1#
*CK2/CK2#
4 DDR SDRAMs
6 DDR SDRAMs
6 DDR SDRAMs
A0
Serial PD
A1
A2
SA0
SA1
SA2
SCL
WP
SDA
Card
Edge
DDR SDRAMs
DDR SDRAMs
DDR SDRAMs
DDR SDRAMs
DDR SDRAMs
DDR SDRAMs
R=120
CK0/1/2
CK0/1/2#
*
*
CKE0/1
Notes :
1. DQ-to-I/O wiring is shown as recommended
but may be changed.
2. DQ/DQS/DM/CKE/CS# relationships must be
maintained as shown.
3. DQ, DQS, DM#/DQS# resistors: 22 Ohms + 5%.
4. BAx, Ax, RAS#, CAS#, WE# resistors: 3 Ohms + 5%.
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
DM#
CS#
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