Specification Sheet

MCHBAR Registers
204 Datasheet, Volume 2 of 2
7.34 Address decode DIMM parameters. (MAD)—Offset
500Ch
This register defines channel DIMM characteristics - number of DIMMs, number of
ranks, size and type.
Access Method
Default: 0h
13:12
0h
RW_L
Reserved (RSVD): Reserved.
11:9
0h
RO
Reserved (RSVD): Reserved.
8
0h
RW_L
EIM: Enhanced mode enable bit
0: Disabled
1: Enabled
7:5
0h
RO
Reserved (RSVD): Reserved.
4
0h
RW_L
RI: Rank interleaving enable bit
0: Disabled
1: Enabled
3:1
0h
RO
Reserved (RSVD): Reserved.
0
0h
RW_L
DIMM_L_MAP: Virtual DIMM L mapping to physical DIMM
0: DIMM0
1: DIMM1
Bit
Range
Default &
Access
Field Name (ID): Description
Type: MEM
(Size: 32 bits)
Offset: [B:0, D:0, F:0] + 500Ch
3
1
2
8
2
4
2
0
1
6
1
2
8 4 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RSVD
DS8Gb
DSNOR
DSW
RSVD
DIMM_S_SIZE
RSVD
DL8Gb
DLNOR
DLW
RSVD
DIMM_L_SIZE