mt18vdvf6472d Micron Semiconductor Products, mt18vdvf6472d Datasheet - Page 28
mt18vdvf6472d
Manufacturer Part Number
mt18vdvf6472d
Description
Ddr Sdram Vlp Registered Dimm
Manufacturer
Micron Semiconductor Products
Datasheet
1.MT18VDVF6472D.pdf
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Figure 10:
PDF: 09005aef81c73825/Source: 09005aef81c73837
DVF18C64_128x72D_2.fm - Rev. A 8/05 EN
Initialization Flow Diagram
Step
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Configure Load Mode Register and reset DLL
Assert NOP or DESELECT commands for t RFC
Optional LMR command to clear DLL bit
Assert NOP or DESELECT for t MRD time
Assert NOP or DESELECT for t MRD time
Assert NOP or DESELECT for t MRD time
DRAM is ready for any valid command
Assert NOP or DESELECT for t RFC time
Bring CKE High with a NOP command
Assert NOP or DESELECT for t RP time
Assert NOP or DESELECT for t RP time
Configure Extended Mode Register
Issue AUTO REFRESH command
Issue AUTO REFRESH command
CKE must be LVCMOS Low
Apply stable CLOCKs
V
Wait at least 200µs
Apply V
DD
PRECHARGE ALL
PRECHARGE ALL
and V
REF
DD
and V
Q Ramp
512MB, 1GB: (x72, DR) 184-Pin DDR VLP RDIMM
TT
28
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2003, 2004, 2005 Micron Technology, Inc. All rights reserved.
Initialization
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