DRA790 Datasheet, PDF (408/436 Pages) Texas Instruments – Infotainment Applications Processor

DRA790, DRA791
DRA793, DRA797
SPRS968A – AUGUST 2016 – REVISED FEBRUARY 2017
32-bit DDR3 EMIF
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ddrx_d31
8
ddrx_d24
ddrx_dqm3
ddrx_dqs3
ddrx_dqsn3
ddrx_d23
8
ddrx_d16
ddrx_dqm2
ddrx_dqs2
ddrx_dqsn2
ddrx_d15
8
ddrx_d8
ddrx_dqm1
ddrx_dqs1
ddrx_dqsn1
ddrx_d7
8
ddrx_d0
ddrx_dqm0
ddrx_dqs0
ddrx_dqsn0
ddrx_ck
ddrx_nck
ddrx_odt0
ddrx_csn0
ddrx_odt1
ddrx_csn1
ddrx_ba0
ddrx_ba1
ddrx_ba2
ddrx_a0
ddrx_a15
ddrx_casn
ddrx_rasn
ddrx_wen
ddrx_cke
ddrx_rst
NC
NC
16
ddrx_vref0
0.1 µF
8-Bit DDR3
Devices
DQ7
DQ7
DQ0
DM/TQS
NC TDQS
DQS
DQS
DQ0
NC TDQS
DM/TQS
DQS
DQS
CK
CK
ODT
CS
CK
CK
ODT
CS
BA0
BA1
BA2
A0
A15
CAS
RAS
WE
CKE
RST
ZQ
ZQ
VREFDQ
VREFCA
0.1 µF
BA0
BA1
BA2
A0
A15
CAS
RAS
WE
CKE
RST
ZQ
VREFDQ
ZQ
VREFCA
0.1 µF
8-Bit DDR3
Devices
DQ7
DQ7
DQ0
DM/TQS
NC TDQS
DQS
DQS
DQ0
DM/TQS
NC TDQS
DQS
DQS
CK
CK
ODT
CS
BA0
BA1
BA2
A0
A15
CAS
RAS
WE
CKE
RST
ZQ
ZQ _VREFDQ
VREFCA
0.1 µF
CK
CK
ODT
CS
BA0
BA1
BA2
A0
A15
CAS
RAS
WE
CKE
RST
ZQ
VREFDQ
VREFCA
0.1 µF
Zo ^{0.1 µF}
DDR_1V5
Zo
DDR_VTT
Zo
Zo
DDR_VREF
ZQ
Zo
Termination is required. See terminator comments.
ZQ
Value determined according to the DDR memory device data sheet.
SPRS906_PCB_DDR3_03
Figure 7-39. 32-Bit, One-Bank DDR3 Interface Schematic Using Four 8-Bit DDR3 Devices
408 Applications, Implementation, and Layout
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