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EDBA164B4PR-1DITF-R 数据表(PDF) 32 Page - Micron Technology |
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EDBA164B4PR-1DITF-R 数据表(HTML) 32 Page - Micron Technology |
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32 / 152 page  Table 12: Mode Register Assignments Notes 1–5 apply to all parameters and conditions MR# MA[7:0] Function Access OP7 OP6 OP5 OP4 OP3 OP2 OP1 OP0 Link 0 00h Device info R RFU RZQI RFU DI DAI go to MR0 1 01h Device feature 1 W nWR (for AP) WC BT BL go to MR1 2 02h Device feature 2 W RFU RL and WL go to MR2 3 03h I/O config-1 W RFU DS go to MR3 4 04h SDRAM refresh rate R TUF RFU Refresh rate go to MR4 5 05h Basic config-1 R LPDDR2 Manufacturer ID go to MR5 6 06h Basic config-2 R Revision ID1 go to MR6 7 07h Basic config-3 R Revision ID2 go to MR7 8 08h Basic config-4 R I/O width Density Type go to MR8 9 09h Test mode W Vendor-specific test mode go to MR9 10 0Ah I/O calibration W Calibration code go to MR10 11–15 0Bh ≈ 0Fh Reserved – RFU go to MR11 16 10h PASR_Bank W Bank mask go to MR16 17 11h PASR_Seg W Segment mask go to MR17 18–31 12h–1Fh Reserved – RFU go to MR18 32 20h DQ calibration pattern A R See Data Calibration Pattern Description table go to MR32 33–39 21h–27h Do not use go to MR33 40 28h DQ calibration pattern B R See Data Calibration Pattern Description table go to MR40 41–47 29h–2Fh Do not use go to MR41 48–62 30h–3Eh Reserved – RFU go to MR48 63 3Fh RESET W X go to MR63 64–126 40h–7Eh Reserved – RFU go to MR64 127 7Fh Do not use go to MR127 128–190 80h–BEh Reserved for vendor use RVU go to MR128 191 BFh Do not use go to MR191 192–254 C0h–FEh Reserved for vendor use RVU go to MR192 255 FFh Do not use go to MR255 Notes: 1. RFU bits must be set to 0 during MRW. 2. RFU bits must be read as 0 during MRR. 3. For READs to a write-only or RFU register, DQS will be toggled and undefined data is returned. 4. RFU mode registers must not be written. 5. WRITEs to read-only registers must have no impact on the functionality of the device. 216-Ball and 220-Ball, Dual-Channel LPDDR2 SDRAM Mode Register Definition 09005aef85eb530a 216b_220b_2ch_2e0e_embedded_lpddr2.pdf – Rev. F 08 /16 EN 32 Micron Technology, Inc. reserves the right to change products or specifications without notice. © 2014 Micron Technology, Inc. All rights reserved. |
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