SPRS976E November 2016 – May 2018 DM505
PRODUCTION DATA.
Figure 7-57 shows the CK routing for two DDR3 devices placed on the same side of the PCB. Figure 7-58 shows the corresponding ADDR_CTRL routing.
Figure 7-57 CK Routing for Two Single-Side DDR3 Devices
Figure 7-58 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 7-59 and Figure 7-60 show the routing for CK and ADDR_CTRL, respectively, for two DDR3 devices mirrored in a single-pair configuration.
Figure 7-59 CK Routing for Two Mirrored DDR3 Devices
Figure 7-60 ADDR_CTRL Routing for Two Mirrored DDR3 Devices