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AM3874 Datasheet(PDF) 300 Page - Texas Instruments |
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AM3874 Datasheet(HTML) 300 Page - Texas Instruments |
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300 / 361 page ![]() = Rtt A2 A3 A4 AT Vtt A3 = Rcp Rcp Cac DDR_1V5 0.1 µF A2 A3 A4 A2 A3 A4 AT AT A3 A3 AM3874, AM3871 SPRS695C – SEPTEMBER 2011 – REVISED DECEMBER 2013 www.ti.com Figure 8-62. CK Routing for Four Mirrored DDR3 Devices Figure 8-63. ADDR_CTRL Routing for Four Mirrored DDR3 Devices 8.13.4.2.4.11.4 Two DDR3 Devices Two DDR3 devices are supported on the DDR EMIF consisting of two x8 DDR3 devices arranged as one bank (CS), 16-bits wide, or two x16 DDR3 devices arranged as one bank (CS), 32-bits wide. 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. 8.13.4.2.4.11.5 CK and ADDR_CTRL Topologies, Two DDR3 Devices Figure 8-64 shows the topology of the CK net classes and Figure 8-65 shows the topology for the corresponding ADDR_CTRL net classes. Figure 8-64. CK Topology for Two DDR3 Devices Figure 8-65. ADDR_CTRL Topology for Two DDR3 Devices 300 Peripheral Information and Timings Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: AM3874 AM3871 |
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