Intel Xeon L3406 CM80616005010AA User Manual
Product codes
CM80616005010AA
Datasheet, Volume 2
245
Processor Uncore Configuration Registers
4.10.9
MC_CHANNEL_0_RANK_PRESENT
MC_CHANNEL_1_RANK_PRESENT
This register provides the rank present vector.
Device:
4, 5
Function:
0
Offset:
7Ch
Access as a DWord
Bit
Attr
Default
Description
31:8
RO
0
Reserved
7:0
RW
0
RANK_PRESENT
Vector that represents the ranks that are present. Each bit represents a
Vector that represents the ranks that are present. Each bit represents a
logical rank. When two or fewer DIMMs are present, [3:0] represents the
four possible ranks in DIMM0 and [7:4] represents the ranks that are
possible in DIMM1. When three DIMMs are present, then the following
applies:
[1:0] represents ranks 1:0 in Slot 0
[3:2] represents ranks 3:2 in Slot 1
[5:4] represents ranks 5:4 in Slot 2
[7:6] represents ranks 7:6 in Slot 3
[1:0] represents ranks 1:0 in Slot 0
[3:2] represents ranks 3:2 in Slot 1
[5:4] represents ranks 5:4 in Slot 2
[7:6] represents ranks 7:6 in Slot 3