MT18RTF25672FDY Micron Semiconductor Products, MT18RTF25672FDY Datasheet - Page 4

• Manufacturer Part Number: MT18RTF25672FDY
• Description: 1.55v Ddr2 Sdram Fbdimm
• Manufacturer: Micron Semiconductor Products

Table 5: Pin Descriptions
PDF: 09005aef82b63cf2
rtf18c256x72fdy.pdf - Rev. C 12/09 EN
PN#[13:0]
SN#[13:0]
Symbol
PN[13:0]
SN[13:0]
PS#[9:0]
SS#[9:0]
M_TEST
RESET#
SA[2:0]
PS[9:0]
V
SS[9:0]
SCK#
VID0
DNU
SDA
SCK
V
DDSPD
SCL
V
V
V
DD
CC
TT
SS
Output
Output
Output
Output
Output
Supply
Supply
Supply
Supply
Supply
Supply
Type
Input
Input
Input
Input
Input
Input
Input
I/O
I/O
–
–
Description
Primary southbound data, positive lines.
Primary southbound data, negative lines.
System clock input, positive line.
System clock input, negative line.
Serial presence-detect (SPD) clock input.
Secondary southbound data, positive lines.
Secondary southbound data, negative lines.
Primary northbound data, positive lines.
Primary northbound data, negative lines.
Secondary northbound data, positive lines.
Secondary northbound data, negative lines.
Voltage identification, connected to V
SPD address inputs, also used to select the FBDIMM number in the AMB.
SPD data input/output.
AMB reset signal.
AMB core power and AMB channel interface power (1.5V).
DRAM power and AMB DRAM I/O power (1.5V).
DRAM clock, command, and address termination power (V
SPD/AMB SMBus power.
Ground.
The M_TEST pin provides an external connection for testing the margin of V
duced by a voltage divider on the module. It is not intended to be used in normal system
operation and must not be connected (DNU) in a system. This test pin may have other fea-
tures on future card designs and will be included in this specification at that time.
Do not use.
2GB (x72, DR) 240-Pin DDR2 SDRAM FBDIMM
4
SS
. Indicates 1.5V DRAM present on module.
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Pin Assignments and Descriptions
DD
/2).
© 2007 Micron Technology, Inc. All rights reserved.
REF
, which is pro-