Computer Hardware User Manual

DDR2CLKOUT
DDR2CLKOUT
DSDCKE
DCE0
DSDWE
DSDRAS
DSDCAS
DSDDQM0
DSDDQM1
DSDDQS0
DSDDQS1
DBA[2:0]
DEA[13:0]
DED[15:0]
ODT0
DSDDQS0
DSDDQS1
CK
CK
CKE
CS
WE
RAS
CAS
LDM
LDQS
UDQS
BA[2:0]
A[12:0]
DQ[15:0]
ODT
V
REF
LDQS
UDQS
DDR2
Memory
x16-bit
DDR2
Memory
Controller
ODT1
DSDDQGATE0
(A)
DSDDQGATE1
(A)
DSDDQGATE2
(A)
DSDDQGATE3
(A)
DDRSLRATE
DED[31:16]
DSDDQM2
DSDDQM3
DSDDQS2
DSDDQS3
DSDDQS2
DSDDQS3
UDM
CK
CK
CKE
CS
WE
RAS
CAS
LDM
LDQS
UDQS
BA[2:0]
A[12:0]
DQ[15:0]
ODT
LDQS
UDQS
DDR2
Memory
x16-bit
UDM
V
REF
V
DD
V
REF
Using the DDR2 Memory Controller www.ti.com
Figure 16. Connecting to Two 16-Bit DDR2 SDRAM Devices
A These pins are used as a timing reference during memory reads. For routing rules, see the device-specific data
manual.
32
C6455/C6454 DDR2 Memory Controller SPRU970G– December 2005– Revised June 2011
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