DRA722_17 Datasheet, PDF (391/408 Pages) Texas Instruments – Infotainment Applications Processor

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DRA722, DRA724, DRA725, DRA726
SPRS956B – MARCH 2016 – REVISED JANUARY 2017
Rtt
A2
A3
AT
Vtt
=
SPRS906_PCB_DDR3_15
Figure 8-54. ADDR_CTRL Routing for Two Single-Side DDR3 Devices
To save PCB space, the two DDR3 memories may be mounted as a mirrored pair at a cost of increased
routing and assembly complexity. Figure 8-55 and Figure 8-56 show the routing for CK and ADDR_CTRL,
respectively, for two DDR3 devices mirrored in a single-pair configuration.
DDR_1V5
Rcp
Cac
A2
A3
AT
A2
A3
AT
Rcp
0.1 µF
=
SPRS906_PCB_DDR3_16
Figure 8-55. CK Routing for Two Mirrored DDR3 Devices
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Applications, Implementation, and Layout 391
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