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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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EDBA164B4PK-1DITF-R датащи(PDF) 81 Page - Micron Technology |
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EDBA164B4PK-1DITF-R датащи(HTML) 81 Page - Micron Technology |
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81 / 152 page  Figure 53: MR32 and MR40 DQ Calibration Timing – RL = 3, tMRR = 2 MRR NOP1 NOP T0 T1 T2 T3 T4 T5 T6 T7 T8 CK_c CK_t CA[9:0] CMD DQS_c DQS_t DQ0 DQ[7:1] DQ8 DQ[15:9] DQ16 DQ[23:17] DQ24 DQ[31:25] RL = 3 Transitioning data Optionally driven the same as DQ0 or 0b tMRR = 2 tMRR = 2 0011 10 10 Reg 40 Reg 40 Reg 32 Reg 32 MRR 0011 10 10 0011 10 10 0011 10 10 0011 10 10 0011 10 10 0011 10 10 0011 10 10 Pattern A Pattern B x32 x16 Notes: 1. The MRR command has a burst length of four. 2. The MRR operation must not be interrupted. 3. A MRR to MR32 and MR40 drives valid data on DQ[0] during the entire burst. For a x16 device, DQ[8] drives the same information as DQ[0] during the burst. For a x32 device, DQ[8], DQ[16], and DQ[24] drive the same information as DQ[0] during the burst. 4. For a x16 device, DQ[7:1] and DQ[15:9] may optionally drive the same information as DQ[0], or they may drive 0b during the burst. For a x32 device, DQ[7:1], DQ[15:9], DQ[23:17], and DQ[31:25] may optionally drive the same information as DQ[0], or they may drive 0b during the burst. 5. The MODE REGISTER command period is tMRR. No command (other than NOP) is al- lowed during this period. 216-Ball and 220-Ball, Dual-Channel LPDDR2 SDRAM MODE REGISTER READ 09005aef85eb530a 216b_220b_2ch_2e0e_embedded_lpddr2.pdf – Rev. F 08 /16 EN 81 Micron Technology, Inc. reserves the right to change products or specifications without notice. © 2014 Micron Technology, Inc. All rights reserved. |
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