NQ5000P S L9TN Intel, NQ5000P S L9TN Datasheet - Page 203

• Manufacturer Part Number: NQ5000P S L9TN
• Manufacturer: Intel

Specifications of NQ5000P S L9TN

• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Register Description
3.9.16
Table 3-44. FB-DIMM to Host Double Config Mux Select
3.9.17
3.9.18
Intel® 5000P/5000V/5000Z Chipset Memory Controller Hub (MCH) Datasheet
GRFBDTOHOSTDBLCFG: FB-DIMM To Host Double
Configuration
This register provides valid signals to assert data in the FB-DIMM side for various
gearing ratios. This primarily affects the Northbound data path of the 4:5 config and
determines when both the lanes in core contain valid FB-DIMM data.
a. For 4:5 gear ratio, software should use either conservative or aggressive mode for all the
b. Ignored by MGr registers in the 5:4 mode.
Summary of Memory Gearing Register operating modes
DRTA - DRAM Timing Register A
This register defines timing parameters for all DDR2 SDRAMs in the memory
subsystem. The parameters for these devices are obtained by serial presence detect.
This register must be set to provide timings that satisfy the specifications of all DRAMs
detected. For example, if DRAMs present have different TRCs, the maximum should be
used to program this register. Consult the JEDEC DDR2 DRAM specifications for the
technology of the devices in use.
Notes:
Device:
Function:
Offset:
Version:
• FBDTOHOSTGRCFG1, GRFBDVLDCFG, and GRFBDTOHOSTDBLCFG are used only in
• GRBUBBLECFG is only used in 5:4 mode.
• GRHOSTFULLCFG is used in both 4:5 and 5:4 modes.
• FBDTOHOSTGRCFG0 and HOSTTOFBDGRCFG are used in 4:5, 5:4, AND 1:1 modes.
FSB:Memory Frequency
7:0
respective memory gearing registers (no mix and match).
Bit
4:5 mode.
RWST
333:333
267:267
400:400
333:267
267:333
267:333
Attr
16
1
16Fh
Intel 5000P Chipset, Intel 5000V Chipset, Intel 5000Z Chipset
Default
0h
FBDHSTDBLMUX: FB-DIMM to Host Double Mux Selector
Configures when both data lines are valid according to
primarily affect the 4:5 gearing ratio.
4:5 (conservative)
4:5 (aggressive)
Gear Ratio
1:1
5:4
a
Description
Value
00h
00h
08h
04h
b
Table
3-44. This
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