AM3359, AM3358, AM3357
AM3356, AM3354, AM3352
SPRS717F –OCTOBER 2011–REVISED APRIL 2013
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8-Bit DDR2
Devices
AM335x
DDR_D0
DQ0
DDR_D7
DQ7
DM
DDR_DQM0
DDR_DQS0
DQS
DDR_DQSn0
DQS
DDR_D8
DQ0
DDR_D15
DDR_DQM1
DDR_DQS1
DDR_DQSn1
DQ7
DM
DQS
DQS
DDR_ODT
DDR_BA0
T
T
ODT
BA0
ODT
BA0
DDR_BA2
DDR_A0
T
T
BA2
A0
BA2
A0
DDR_A15
T
T
A15
CS
A15
CS
DDR_CSn0
DDR_CASn
DDR_RASn
DDR_WEn
DDR_CKE
DDR_CK
CAS
RAS
CAS
RAS
T
T
T
T
T
T
VDDS_DDR(A)
WE
WE
CKE
CKE
CK
CK
CK
CK
1 K Ω 1%
0.1 µF
0.1 µF
DDR_CKn
DDR_VREF
DDR_VREF
1 K Ω 1%
VREF
VREF
0.1 µF(B) 0.1 µF(B)
0.1 µF(B)
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 5-40. 16-Bit DDR2 Interface Using Two 8-Bit DDR2 Devices
160
Peripheral Information and Timings
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