1Gb: x4, x8, x16 DDR2 SDRAM
Off-Chip Driver (OCD) Impedance Calibration ............................................................................................ 81
Posted CAS Additive Latency (AL) ............................................................................................................... 81
Extended Mode Register 2 (EMR2) .................................................................................................................. 83
Extended Mode Register 3 (EMR3) .................................................................................................................. 84
Initialization .................................................................................................................................................. 85
ACTIVATE ...................................................................................................................................................... 88
READ ............................................................................................................................................................. 90
READ with Precharge ................................................................................................................................. 94
READ with Auto Precharge .......................................................................................................................... 96
WRITE .......................................................................................................................................................... 101
PRECHARGE ................................................................................................................................................. 111
REFRESH ...................................................................................................................................................... 112
SELF REFRESH .............................................................................................................................................. 113
Power-Down Mode ....................................................................................................................................... 115
Precharge Power-Down Clock Frequency Change .......................................................................................... 122
Reset ............................................................................................................................................................. 123
CKE Low Anytime ...................................................................................................................................... 123
ODT Timing .................................................................................................................................................. 125
MRS Command to ODT Update Delay ........................................................................................................ 127
PDF: 09005aef821ae8bf
1GbDDR2.pdf – Rev. T 02/10 EN
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