sg25672rddr6h2bgic ETC-unknow, sg25672rddr6h2bgic Datasheet - Page 12

• Manufacturer Part Number: sg25672rddr6h2bgic
• Description: Dram Module Ddr Sdram 2gbyte 184rdimm
• Manufacturer: ETC-unknow

Extended Mode Register Table Definition
The Extended Mode Register is used to control functions beyond those controlled by Mode Register. This definition includes
DLL Enable/Disable, Output Drive Strength, and QFC Enable/Disable as shown in table below. The Mode Register is pro-
grammed via the MODE REGISTER SET command (with BA0 = 1 and BA1 = 0) and will retain the stored information until it is
programmed again or the device loses power. The enabling of the DLL should always be followed by a MODE REGISTER SET
Command to the Mode Register (with BA0 = 0 and BA1 = 0) to reset the DLL. In the table below, note that n = 11 for 128Mb
devices, n = 12 for 256Mb and 512Mb devices, and n = 13 for 1Gb devices. QFC# option is not currently supported.
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Address Bus
Mode Register
Bits
En+2
BA1
0
En+1
BA0
1
En
0
-
An
En
..
0
-
..
..
..
0
-
..
..
E5
0
-
..
..
Operating Mode
..
..
E4
0
-
..
..
E3
0
-
..
..
SG25672RDDR6H2BGUU
..
..
Operating Mode
Normal Operation
All other states reserved
A4
E4
A3
E3
QFC#
A2
E2
E1
0
1
DS
A1
E1
Drive Strength
Normal
Weak
E0
DLL
0
1
A0
E0
July 5, 2007
DLL
Enable
Disable
12