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DDR_CLK
DDR_CLK
DDR_CKE
DDR_CS
DDR_WE
DDR_RAS
DDR_CAS
DDR_DQM[0]
DDR_DQM[1]
DDR_DQS[0]
DDR_DQS[1]
DDR_BA[2:0]
DDR_A[12:0]
DDR_D[15:0]
DDR_DQM[2]
DDR_DQM[3]
DDR_DQS[2]
DDR_DQS[3]
DDR_D[31:16]
DDR_ZN
DDR_ZP
DDR2
memory
CK
CK
CKE
CS
WE
RAS
CAS
LDM
UDM
LDQS
UDQS
BA[2:0]
A[12:0]
DQ[15:0]
DDR2
memory
x16−bit
LDQS
DQ[15:0]
A[12:0]
BA[2:0]
UDQS
DDR2
memory
x16−bit
UDM
LDM
CAS
RAS
WE
CS
CKE
CK
CK
200 Ω200 Ω
controller
DDR_CLK
DDR_CLK
DDR_CKE
DDR_CS
DDR_WE
DDR_RAS
DDR_CAS
DDR_DQM[0]
DDR_DQM[1]
DDR_DQS[0]
DDR_DQS[1]
DDR_BA[2:0]
DDR_A[12:0]
DDR_D[15:0]
DDR_ZN
DDR_ZP
CK
CK
CKE
CS
WE
RAS
CAS
LDM
UDM
LDQS
UDQS
BA[2:0]
A[12:0]
DQ[15:0]
DDR2
memory
x16−bit
200 Ω
200 Ω
DDR2
memory
controller
SupportedUseCases
Figure17.ConnectingDDR2MemoryControllerfor32-BitConnection
Figure18.ConnectingDDR2MemoryControllerfor16-BitConnection
SPRU986B–November2007DDR2MemoryController37
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