Acer Aspire X1301 Service Manual page 27

Acer laptop user manual
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DRAM Configuration
Parameter
Timing Mode
Memory Clock value or Limit
CKE base power down
mode
CKE based power down
Memclock tri-stating
Memory Hole Remapping
Auto Optimize Bottom IO
Bottom of UMA DRAM
[31:24] [FC]
Chapter 2
Description
When set to auto mode, the system reads the electronic data sheet of the
memory modules and adjusts the timings accordingly.
When set to MaxMemClk, you can manually specify the memory clock
frequency independent of the system bus frequency.
Displays the current memory clock frequency.
All synchronous memory devices can go into sleep mode as soon as the
clock enable (CKE) signal is disasserted. In that case, the internal clocks are
disabled and the memory chip goes into auto-refresh mode which is the
lowest power state at which the memory retains data.
If then power is turned off, the device will lose all data, however, as long as
standby power is maintained, no data loss will occur.
Sets the CKE power saving through disasserting clock enable using system
level or per channel basis.
Enables or disables the memory clock tri-stating during C3 an Alt VD
feature.
Enables or disables memory remapping around the memory hole.
Allows you to auto optimize maximal memory size when kernel assigns PCI
Resources.
Allows you to enter a HEX number ranging from 0000 to 00F0.
Option
Auto
MaxMemClk
Disabled
Enabled
Per Channel
Per CS
Disabled
Memclock tri-
stating during
C3 and Alt VD
Enabled
Disabled
Enabled
Disabled
Minimim 0000
Maximum 00FC
19

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