Texas Instruments DM648 DSP - Manual (Page 31)

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DDR_CLK
DDR_CLK
DDR_CKE
DDR_CS
DDR_WE
DDR_RAS
DDR_CAS
DDR_DQM0
DDR_DQM1
DDR_DQS0
DDR_DQS1
DDR_BA[2:0]
DDR_A[13:0]
DDR_D[15:0]
DDR_VREF
DDR_ODT0
DDR_DQS0
DDR_DQS1
CK
CK
CKE
CS
WE
RAS
CAS
LDM
UDM
LDQS
UDQS
BA[2:0]
A[12:0]
DQ[15:0]
ODT
VREF
LDQS
UDQS
DDR2
memory
x16−bit
VREF
DDR2
memory
controller
DDR_ODT1
DDR_DQGATE0 (A)
DDR_DQGATE1 (A)
DDR_DQGATE2 (A)
DDR_DQGATE3 (A)
Using the DDR2 Memory Controller
Figure 18. Connecting to a Single 16-Bit DDR2 SDRAM Device
A These pins are used as a timing reference during memory reads. For routing rules, see the device-specific data
manual.
SPRUEK5A – October 2007 DSP DDR2 Memory Controller 31
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