46DR83200A Datasheet, PDF (38/48 Pages) Integrated Silicon Solution, Inc – 32Mx8, 16Mx16 DDR2 DRAM

IS43/46DR83200A, IS43/46DR16160A
Address
Field
BA1
BA0
Mode
Register
0
1
A12
Qff
A11
*1
RDQS
A10
/DQS
A9
A8
OCD
Program
A7
A6
Rtt
A5
A4
Additive
Latency
A3
A2
Rtt
A1
D.I.C
A0
DLL
A12
0
1
A11^*1
0
1
A10
0
1
A9
0
0
0
1
1
A5
0
0
0
0
1
1
1
1
A1
0
1
Qoff^*4
Output buffer enabled
Ouput buffer disabled
RDQS Enable
Disable
Enable
/DQS
Enable
Disable
A11^*1
(RDQS)
0
0
1
1
A10
(/DQS)
0
1
0
1
RDQS/DM
DM
DM
RDQS
RDQS
Strobe Function Marix
/RDQS
DQS
Hi-z
DQS
Hi-z
DQS
/RDQS
DQS
Hi-z
DQS
/DQS
/DQS
Hi-z
/DQS
Hi-z
A8
A7
OCD Calibration Program
0
0
OCD Calibration mode exit; maintain setting
0
1
Drive(1)
1
0
Drive(0)
0
0
1
1
Adjust mode^*2
OCD Calibration default^*3
A4
A3
Additive Latency
A6
A2
0
0
0
0
0
0
1
1
0
1
1
0
2
1
0
1
1
3
1
1
0
0
4
0
1
5
1
0
Reserved
1
1
Reserved
Rtt(NOMINAL)
ODT Disabled
75 ohm
150 ohm
50 ohm
Output Drive Impedance Control
Full Strength
Reduced strength
A0
DLL enable
0
Enable
1
Disable
EMR(1)
Notes:
1. x16 doesn't support RDQS option; this must be set to 0 when programming the EMR(1).
2. When Adjust mode is issued, AL from previously set value must be applied.
3. After setting to default, OCD calibration mode needs to be exited by setting A9-A7 to 000.
4. Output disabled - DQs, DQSs, DQSs, RDQS and RDQS. This feature is used in conjunction with DIMM IDD measurements when IDDQ is not
desired to be included.
38
Integrated Silicon Solution, Inc. — www.issi.com
Rev. D
08/16/2012