Intel G640T CM8062301002204 User Manual

216

Datasheet, Volume 2

This register defines 

channel characteristics—number of DIMMs, number of ranks, size, 

interleave options

31:26

RO

0h

25:24

RW-L

00b

Uncore

23

RO

0h

22

RW-L

1b

Uncore

Enhanced Interleave mode (Enh_Interleave)
0 = Off

1 = On

21

RW-L

1b

Uncore

Rank Interleave (RI)
0 = Off

1 = On

20

RW-L

0b

Uncore

DIMM B DDR width (DBW)
DIMM B width of DDR chips
0 = X8 chips

1 = X16 chips

19

RW-L

0b

Uncore

DIMM A DDR width (DAW)
DIMM A width of DDR chips
0 = X8 chips

1 = X16 chips

18

RW-L

0b

Uncore

DIMM B number of ranks (DBNOR)
0 = Single rank

1 = Dual rank

17

RW-L

0b

Uncore

DIMM A number of ranks (DANOR)
0 = Single rank

1 = Dual rank

16

RW-L

0b

Uncore

DIMM A select (DAS)
Selects which of the DIMMs is DIMM A – should be the larger 

DIMM:
0 = DIMM 0

1 = DIMM 1

15:8

RW-L

00h

Uncore

Size of DIMM B (DIMM_B_Size)
Size of DIMM B in 256 MB multiples

7:0

RW-L

00h

Uncore

Size of DIMM A (DIMM_A_Size)
Size of DIMM A in 256 MB multiples