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SPRS717F –OCTOBER 2011–REVISED APRIL 2013
16-Bit DDR2
Device
AM335x
DDR_D0
DQ0
DDR_D7
DQ7
LDM
LDQS
DDR_DQM0
DDR_DQS0
DDR_DQSn0
DDR_D8
LDQS
DQ8
DDR_D15
DDR_DQM1
DDR_DQS1
DDR_DQSn1
DQ15
UDM
UDQS
UDQS
DDR_ODT
DDR_BA0
T
T
ODT
BA0
DDR_BA2
DDR_A0
T
T
BA2
A0
DDR_A15
T
T
A15
CS
DDR_CSn0
DDR_CASn
DDR_RASn
DDR_WEn
DDR_CKE
DDR_CK
CAS
RAS
T
T
T
T
T
T
VDDS_DDR(A)
WE
CKE
CK
CK
1 K Ω 1%
0.1 µF
0.1 µF
DDR_CKn
DDR_VREF
DDR_VREF
VREF
0.1 µF(B)
0.1 µF(B)
1 K Ω 1%
DDR_RESETn
DDR_VTP
NC
49.9 Ω
( 1%, 20 mW)
A. VDDS_DDR is the power supply for the DDR2 memories and the AM335x DDR2 interface.
B. One of these capacitors can be eliminated if the divider and its capacitors are placed near a DDR_VREF pin.
C. For all the termination requirements, see Section 5.6.2.2.2.9.
Figure 5-39. 16-Bit DDR2 Interface Using One 16-Bit DDR2 Device
Copyright © 2011–2013, Texas Instruments Incorporated
Peripheral Information and Timings
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