Write Leveling ...............................................................................................................................................
125 Write Leveling Procedure ...........................................................................................................................
127 Initialization .................................................................................................................................................
130 Mode Registers ..............................................................................................................................................
132 Mode Register 0 (MR0) ..................................................................................................................................
133 Burst Length .............................................................................................................................................
133 Burst Type ................................................................................................................................................
134 DLL RESET ................................................................................................................................................
135 Write Recovery ..........................................................................................................................................
135 CAS Latency (CL) .......................................................................................................................................
136 Mode Register 1 (MR1) ..................................................................................................................................
137 DLL Enable/DLL Disable ...........................................................................................................................
137 Output Drive Strength ...............................................................................................................................
138 OUTPUT ENABLE/DISABLE ......................................................................................................................
138 TDQS Enable .............................................................................................................................................
138 On-Die Termination ..................................................................................................................................
139 WRITE LEVELING .....................................................................................................................................
139 Mode Register 2 (MR2) ..................................................................................................................................
141 CAS Write Latency (CWL) ...........................................................................................................................
141 AUTO SELF REFRESH (ASR) ......................................................................................................................
142 SRT vs. ASR ...............................................................................................................................................
143 DYNAMIC ODT .........................................................................................................................................
143 Mode Register 3 (MR3) ..................................................................................................................................
144 MPR Functional Description ......................................................................................................................
145 ZQ CALIBRATION Operation .........................................................................................................................
152 ACTIVATE Operation .....................................................................................................................................
153 READ Operation ............................................................................................................................................
155 WRITE Operation ..........................................................................................................................................
166 DQ Input Timing .......................................................................................................................................
174 PRECHARGE Operation .................................................................................................................................
176 SELF REFRESH Operation .............................................................................................................................
176 Extended Temperature Usage ........................................................................................................................
178 Power-Down Mode .......................................................................................................................................
179 RESET Operation ...........................................................................................................................................
187 On-Die Termination (ODT) ...........................................................................................................................
189 Nominal ODT ...........................................................................................................................................
189 Dynamic ODT ...............................................................................................................................................
191 Functional Description ..............................................................................................................................
191 Synchronous ODT Mode ...............................................................................................................................
196 ODT Latency and Posted ODT ...................................................................................................................
196 Timing Parameters ....................................................................................................................................
196 ODT Off During READs ..............................................................................................................................
199 2Gb: x4, x8, x16 DDR3 SDRAM
PDF: 09005aef826aaadc
2Gb_DDR3_SDRAM.pdf – Rev. K 04/10 EN
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