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Register Description
2.8.7
MC_MAX_DOD
This register defines the MAX number of DIMMS, RANKS, BANKS, ROWS, COLS among
all DIMMS populating the three channels. The Memory Init logic uses this register to
cycle through all the memory addresses writing all 0's to initialize all locations. This
register is also used for scrubbing and sparing and must always be programmed if any
DODs are programmed.
Device:
Function: 0
Offset:
Access as a Dword
Bit
10:9
8:6
5:4
3:2
1:0
Datasheet
3
64h
Reset
Type
Value
MAXNUMCOL. Maximum Number of Columns.
00 = 2^10 columns
RW
0
01 = 2^11 columns
10 = 2^12 columns
11 = RSVD.
MAXNUMROW. Maximum Number of Rows.
000 = 2^12 Rows
001 = 2^13 Rows
RW
0
010 = 2^14 Rows
011 = 2^15 Rows
100 = 2^16 Rows
Others = RSVD.
MAXNUMBANK. Max Number of Banks.
00 = Four-banked
RW
0
01 = Eight-banked
10 = Sixteen-banked.
MAXNUMRANK. Maximum Number of Ranks.
00 = Single Ranked
RW
0
01 = Double Ranked
10 = Quad Ranked.
MAXNUMDIMMS. Maximum Number of DIMMs.
00 = 1 DIMM
RW
0
01 = 2 DIMMs
10 = 3 DIMMs
11 = RSVD.
Description
53
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