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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM3703CUS датащи(PDF) 186 Page - Texas Instruments |
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AM3703CUS датащи(HTML) 186 Page - Texas Instruments |
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186 / 280 page  A1 A1 X Y OFFSET RecommendedLPDDRDevice Orientation Y Y OFFSET LPDDR Device OMAP AM3715, AM3703 SPRS616F – JUNE 2010 – REVISED AUGUST 2011 www.ti.com Figure 6-19. AM37xx and LPDDR Device Placement Table 6-16. Placement Specifications NO. PARAMETER MIN MAX UNIT NOTES 1 X 1440 Mils See Notes(1), (2) 2 Y 1030 Mils See Notes(1), (2) 3 Y Offset 525 Mils See Notes(1),(2),(3) 4 LPDDR Keepout Region See Note(4) Clearance from non-LPDDR signal to LPDDR 5 4 w See Note(5) Keepout Region (1) See Figure 6-17 for dimension definitions. (2) Measurements from center of device to center of LPDDR device. (3) For 16 bit memory systems it is recommended that Y Offset be as small as possible. (4) LPDDR keepout region to encompass entire LPDDR routing area. (5) Non-LPDDR signals allowed within LPDDR keepout region provided they are separated from LPDDR routing layers by a ground plane. 6.4.2.3 LPDDR Keep Out Region The region of the PCB used for the LPDDR circuitry must be isolated from other signals. The LPDDR keep out region is defined for this purpose and is shown in Figure 6-20. The size of this region varies with the placement and LPDDR routing. Additional clearances required for the keep out region are shown in Table 6-16. 186 Timing Requirements and Switching Characteristics Copyright © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): AM3715 AM3703 |
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