NEC SA2500 User Manual - page 223
User Guide
220
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RAS# to CAS#
Delay (Trcd)
4T
2T to 7T
Controls the latency between
the DRAM active command and
the read/write command.
Row Precharge
Time (Trp)
2T
2T to 7T
Controls the idle clocks after
issuing a precharge command
to the DRAM.
ACPI SRAT
Enabled
Disabled
Enables or disables the building
of the ACPI SRAT Table for the
support NUMA feature.
Node Memory
Interleaving
Disabled
Enabled
Enables or disables memory
interleaving.
S/W Memory Hole
Remapping
Enabled
Disabled
Allows memory hosting/
remapping of the memory-
mapped I./O address hole to
above 4GB system memory.
H/W memory hole
Remapping
Enabled
Disabled
Allows HW DRAM remapping
around sub 4GB system
memory.
H/W memory hole
interlock
At least not
All present are
Set it to At Least Not if any
nodes/conditions is not capable
(partial interlocks)
Set it to All Present are if all
nodes/conditions are capable
(full interlock)
MTRR Mapping
Mode
Continuous
Discreet
Allows the selection of
Continuous for Standard
Mode, or Discreet for
Agressive mode.
Master ECC
Enabled
Enabled
Disabled
Enables or disables ECC
check/correct mode.
ECC Memory
Interlock
At Least One
All are
Allows selection for DIMMs that
are ECC-compliant.
ECC MCE Enable
Disabled
Enabled
When set to Enabled, a
machine-check exception
occurs whenever a machine-
check error that cannot be
corrected is encountered.
Chip-Kill Mode
Enable
Disabled
Enabled
When set to Enabled, allows
ECC checking to be based on a
128/16 data/ECC rather than
on a 64/8 data /ECC.
This feature is only available in
18-bit DRAM data width mode.
ECC Redirection
Disabled
Enabled
When set to Enabled,
correctable errors are corrected
as the data is passed to the
requestor.
DRAM Background
Scrubber
Disabled
40.0ns
Specifies the scrub rate of the
next address to be scrubbed by
the DRAM scrubber.
Table 34: Memory Configuration Submenu (Continued)
Feature
Choices or
Display Only
Description
Your Setting