hy5du561622flfp Hynix Semiconductor, hy5du561622flfp Datasheet - Page 15

• Manufacturer Part Number: hy5du561622flfp
• Description: 256mb Ddr Sdram
• Manufacturer: Hynix Semiconductor

Rev. 1.0 /Nov. 2007
EXTENDED MODE REGISTER SET (EMRS)
The Extended Mode Register controls functions beyond those controlled by the Mode Register; these additional func-
tions include DLL enable/disable, output driver strength selection(optional). These functions are controlled via the bits
shown below. The Extended Mode Register is programmed via the Mode Register Set command (BA0=1 and BA1=0)
and will retain the stored information until it is programmed again or the device loses power.
The Extended Mode Register must be loaded when all banks are idle and no bursts are in progress, and the controller
must wait the specified time before initiating any subsequent operation. Violating either of these requirements will
result in unspecified operation.
* This part do not support/QFC function, A2 must be programmed to Zero.
BA1
0
BA0
BA0
0
1
1
A12
An~A3
MRS Type
EMRS
0
_
MRS
A11
A10
A2~A0
Valid
_
A9
Operating Mode
A8
All other states reserved
Normal Operation
Operating Mode
A7
A6
A5
A4
A3
A2
0*
A1
0
1
A1
DS
Half Strength Driver
Full Strength Driver
Impedance Control
HY5DU561622F(L)FP
Output Driver
A0
DLL
0
1
A0
DLL enable
Disable
Enable
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