AM3359 datasheet(180/236 Pages) TI

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AM335x

Address and Control

Output Buffer

DDR3 Address and Control Input Buffers

Vtt

Address and Control

Terminator

Rtt

AM335x

Differential Clock

Output Buffer

DDR3 Differential CK Input Buffers

Routed as Differential Pair

Rcp

Clock Parallel

Terminator

Rcp

Cac

VDDS_DDR

0.1 µF

–

+ –

AM3359, AM3358, AM3357

AM3356, AM3354, AM3352

SPRS717F – OCTOBER 2011 – REVISED APRIL 2013

www.ti.com

5.6.2.3.4.1 Two DDR3 Devices

Two DDR3 devices are supported on the DDR3 interface consisting of two x8 DDR3 devices arranged as

one 16-bit bank. These two devices may be mounted on a single side of the PCB, or may be mirrored in a

pair to save board space at a cost of increased routing complexity and parts on the backside of the PCB.

5.6.2.3.4.1.1 CK and ADDR_CTRL Topologies, Two DDR3 Devices

Figure 5-52 shows the topology of the CK net classes and Figure 5-53 shows the topology for the

corresponding ADDR_CTRL net classes.

Figure 5-52. CK Topology for Two DDR3 Devices

Figure 5-53. ADDR_CTRL Topology for Two DDR3 Devices

5.6.2.3.4.1.2 CK and ADDR_CTRL Routing, Two DDR3 Devices

Figure 5-54 shows the CK routing for two DDR3 devices placed on the same side of the PCB. Figure 5-55

shows the corresponding ADDR_CTRL routing.

180

Peripheral Information and Timings

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Product Folder Links: AM3359 AM3358 AM3357 AM3356 AM3354 AM3352

AM3359 Datasheet(PDF) 180 Page - Texas Instruments

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