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Datasheet 85

2.11.2 MC_DOD_CH1_0, MC_DOD_CH1_1, MC_DOD_CH1_2

Channel 1 DIMM Organization Descriptor Register.

Device: 5

Function: 1

Offset: 48h, 4Ch, 50h

Access as a Dword

Bit Type

Reset

Value

Description

12:10 RW 0

RANKOFFSET. Rank Offset for calculating RANK.

This field corresponds to the first logical rank on the DIMM. The rank offset is

always programmed to 0 for the DIMM 0 DOD registers. (DIMM 0 rank offset is

always 0.) DIMM 1 DOD rank offset is either 4 for two DIMMs per channel or 2 if

there are three DIMMs per channel. DIMM2 DOD rank offset is always 4 as it is

only used in three DIMMs per channel case.

9RW0

DIMMPRESENT. DIMM slot is populated.

8:7 RW 0

NUMBANK.

Defines the number of (real, not shadow) banks on these DIMMs.

00 = Four-banked

01 = Eight-banked

10 = Sixteen-banked

6:5 RW 0

NUMRANK. Number of Ranks. Defines the number of ranks on these DIMMs.

00 = Single Ranked

01 = Double Ranked

10 = Quad Ranked

4:2 RW 0

NUMROW. Number of Rows.

Defines the number of rows within these DIMMs.

000 = 2^12 Rows

001 = 2^13 Rows

010 = 2^14 Rows

011 = 2^15 Rows

100 = 2^16 Rows

1:0 RW 0

NUMCOL. Number of Columns.

Defines the number of columns within on these DIMMs.

00 = 2^10 columns

01 = 2^11 columns

10 = 2^12 columns

11 = RSVD.

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 97 98

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