K4C89363AF Datasheet, PDF (21/58 Pages) Samsung semiconductor – 2,097,152-WORDS x 4 BANKS x 36-BITS DOUBLE DATA RATE Network-DRAM

K4C89363AF
Mode Register Table
Regular Mode Register (Notes : 1)
Address
Register
B A 1 ^*1
0
B A 0 ^*1
0
A7
Test Mode (TM)
0
Regular (Default)
1
Test Mode Entry
A14-A8
0
A6
A5
A4
CAS Latency (CL)
0
0
X
Reserved ^*2
0
1
0
Reserved ^*2
0
1
1
Reserved ^*2
1
0
0
4
1
0
1
5
1
1
0
6
1
1
1
Reserved ^*2
A 7 ^*3
A6-A4
A3
A2-A0
TM
CL
BT
BL
A3
Burst Type (BT)
0
Sequential
1
Interleave
A2
A1
A0
Burst Length (BL)
0
0
0
Reserved ^*2
0
0
1
2
0
1
0
4
0
1
1
1
X
X
Reserved ^*2
Extended Mode Register (Notes : 4)
Address
Register
B A 1 ^*4
0
B A 0 ^*4
1
A14-A7
0
A6~A5
SS
A4-A3
DIC(QS)
A2~A1
DIC(DQ)
A 0 ^*5
DS
A6
A5
Strobe Select
0
0
Reserved^*2
0
1
Reserved^*2
1
0
Unidirectional DS/QS
1
1
Unidirectional DS/Free Running QS
QS
A4 A3
0
0
0
1
1
0
1
1
DQ
A2 A 1
0
0
0
1
1
0
1
1
Output Driver Impedance Control
(DIC)
Normal Output Driver
Strong Output Driver
Weak Output Driver
Reserved
Note : 1. Regular Mode Register Is Chosen Using the combination of BA0 = 0 and BA1 = 0.
A0
2. "Reserved" places in Regular Mode Register should not be set.
3. A7 in Regular Mode Register must be set to "0"(Low state).
0
Because Test Mode is specific mode for supplier.
4. Extended Mode Register is chosen using the Combination of BA0 = 1 and BA1 = 0.
1
5. A0 in Extended Mode Register must be set to "0" to enable DLL for normal operation.
DLL Switch (DS)
DLL Enable
DLL Disable
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REV. 0.0 Nov. 2002