AM3894CCYG120 Datasheet, PDF (178/308 Pages) Texas Instruments – AM389x Sitara ARM Processors

AM3894
AM3892
SPRS681E – OCTOBER 2010 – REVISED JULY 2012
www.ti.com
DDR_1V5
Rcp
Cac
A2
A3
A4
A3
AT
A2
A3
A4
A3
AT
Rcp
0.1 µF
=
Figure 8-19. CK Routing for Four Single-Side DDR3 Devices
Rtt
A2
A3
A4
A3
AT
Vtt
=
Figure 8-20. ADDR_CTRL Routing for Four Single-Side DDR3 Devices
To save PCB space, the four DDR3 memories may be mounted as two mirrored pairs at a cost of
increased routing and assembly complexity. Figure 8-21 and Figure 8-22 show the routing for CK and
ADDR_CTRL, respectively, for four DDR3 devices mirrored in a two-pair configuration.
178 Peripheral Information and Timings
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