CAS2/150MHz HSDRAM
64MB, 128MB DIMM
Preliminary Data Sheet
128MB DIMM Functional Block Diagram – SM12808DT-6.6
S0#
S1#
Clock Wiring
DQMB0
DQ(7:0)
DQMB4
U4
U5
U12
U13
U0
U1
U8
U9
4 SDRAM+3.3 pf
4 SDRAM+3.3 pf
4 SDRAM+3.3 pf
4 SDRAM+3.3 pf
DQ(39:32)
CK0
CK1
CK2
CK3
DQMB5
DQMB1
DQ(47:40)
DQ(15:8)
10
CK0-3
SCL
SDRAMs
S2#
S3#
DQMB2
DQMB6
U6
U7
U14
U15
U2
U3
U10
U11
DQ(55:48)
DQ(23:16)
SDA
Serial PD
WP
SA0-2
47K
DQMB7
DQMB3
DQ(63:56)
DQ(31:24)
BA0
BA1
BA0 SDRAM U0-15
BA1 SDRAM U0-15
A0-A11 SDRAM U0-15
Vdd SDRAM U0-15
A0-A11
Vdd
Vss
Vss SDRAM U0-15
RAS#
RAS# SDRAM U0-15
CAS# SDRAM U0-15
WE# SDRAM U0-15
CKE0 SDRAM U0-7
CAS#
WE#
CKE0
Vdd
10K
CKE1
CKE1 SDRAM U8-15
Note: All DQ resistor values are 10 ohms
All CK resistor values are 10 ohms
U0-U15 are SM3603T-6.6
Enhanced Memory Systems Inc., 1850 Ramtron Dr., Colo Spgs, CO 80921
PHONE: (800) 545-DRAM; FAX: (719) 488-9095; http://www.edram.com
2000 Enhanced Memory Systems. All rights reserved.
The information contained herein is subject to change without notice.
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Revision 1.0