Intel I7-900 DESKTOP PROCESSOR - DATASHEET VOLUME 2 Datasheet page 68

Device:
Function: 0
Offset:
Access as a Dword
6:4
3:1
0
68
4, 5, 6
80h
tddRdTRd.
Minimum delay between reads to different DIMMs.
000 = 2
001 = 3
010 = 4
RW 0
011 = 5
100 = 6
101 = 7
110 = 8
111 = 9
tdrRdTRd.
Minimum delay between reads to different ranks on the same DIMM.
000 = 2
001 = 3
010 = 4
RW 0
011 = 5
100 = 6
101 = 7
110 = 8
111 = 9
tsrRdTRd.
Minimum delay between reads to the same rank.
RW 0
0 = 4
1 = 6
Register Description
Datasheet